General Science – Biology MCQs
Q 1.Skin works as a respiratory organ in which of the following Animals ?
Answer: Correct Answer:B [Frog]
Notes: Skin works as a respiratory organ in frog. The frog has three respiratory surfaces on its body which it uses to exchange gas with its surroundings: the skin, in the lungs and on the lining of the mouth.
Notes: Skin works as a respiratory organ in frog. The frog has three respiratory surfaces on its body which it uses to exchange gas with its surroundings: the skin, in the lungs and on the lining of the mouth.
Q 2.In Gymnosperms seeds are__________?
Answer: Correct Answer:A [Always naked]
Notes: Gymnosperms are called so because they have naked ovules / seeds. In terms of plant evolution, they are first seed-bearing plants. They are inferior to Angiosperms because in Angiosperms, the ovules are covered.
Notes: Gymnosperms are called so because they have naked ovules / seeds. In terms of plant evolution, they are first seed-bearing plants. They are inferior to Angiosperms because in Angiosperms, the ovules are covered.
Q 3.Which among the following plants is known as Indian ginseng?
Answer: Correct Answer:A [Withania somnifera]
Notes: Withania somnifera or commonly called as Ashwagandha is known as Indian ginseng.
Notes: Withania somnifera or commonly called as Ashwagandha is known as Indian ginseng.
Q 4.As per the WHO definition, within how many days of the termination of pregnancy, the death of a woman is counted in the Maternal Mortality?
Answer: Correct Answer:B [42 Days]
Notes: As per the WHO definition, within 42 days of the termination of pregnancy, the death of a woman is counted in the Maternal Mortality, irrespective of the duration and site of the pregnancy.
Notes: As per the WHO definition, within 42 days of the termination of pregnancy, the death of a woman is counted in the Maternal Mortality, irrespective of the duration and site of the pregnancy.
Q 5.Which of the following fruits has its seed outside?
Answer: Correct Answer:C [Strawberry]
Notes: Strawberry is the fruit which has its seeds outside the body. The “seeds” on the outside of a strawberry are actually the plant’s ovaries and are called “achenes.” Each “seed” is technically a separate fruit that has a seed inside of it.
Notes: Strawberry is the fruit which has its seeds outside the body. The “seeds” on the outside of a strawberry are actually the plant’s ovaries and are called “achenes.” Each “seed” is technically a separate fruit that has a seed inside of it.
Q 6.HIV often changes its shape due to the presence of which of the following enzymes?
Answer: Correct Answer:A [Reverse Transcriptase]
Notes: A reverse transcriptase is an enzyme used to generate complementary DNA from an RNA template, a process termed reverse transcription. The viral DNA is cut and paste into the host cell DNA. The host cell gets tricked into making lots of proteins for the virus.
Notes: A reverse transcriptase is an enzyme used to generate complementary DNA from an RNA template, a process termed reverse transcription. The viral DNA is cut and paste into the host cell DNA. The host cell gets tricked into making lots of proteins for the virus.
Q 7.What is caused by the deficiency of Vitamin D?
Answer: Correct Answer:A [Rickets]
Notes: Rickets is a skeletal disorder that’s caused by a lack of vitamin D, calcium, or phosphate. These nutrients are important for the development of strong, healthy bones. People with rickets may have weak and soft bones, stunted growth, and, in severe cases, skeletal deformities.
Notes: Rickets is a skeletal disorder that’s caused by a lack of vitamin D, calcium, or phosphate. These nutrients are important for the development of strong, healthy bones. People with rickets may have weak and soft bones, stunted growth, and, in severe cases, skeletal deformities.
Q 8.Which of the following belongs to the Hypochondria?
Answer: Correct Answer:D [State of morbid anxiety about one’s own health, with complaint of imaginary disorders]
Notes: Hypochondria symptoms include a long-term and intense fear of having a serious condition and worry that minor symptoms indicate something serious. A person may frequently visit or switch doctors.
Notes: Hypochondria symptoms include a long-term and intense fear of having a serious condition and worry that minor symptoms indicate something serious. A person may frequently visit or switch doctors.
Q 9.Photosynthesis generally occurs in which portions of the plant?
Answer: Correct Answer:A [Leaf and other chloroplast bearing parts]
Notes: Photosynthesis can take place in leaves, stem or green part of plant which containing chlorophyll.
Notes: Photosynthesis can take place in leaves, stem or green part of plant which containing chlorophyll.
Q 10.The Six Kingdoms of Classification is also known as the latest classification system. By whom is it given?
Answer: Correct Answer:A [C Woese]
Notes: In biology, a scheme of classifying organisms into six kingdoms: Proposed by Carl Woese et al: Animalia, Plantae, Fungi, Protista, Archaea/Archaeabacteria, and Bacteria/Eubacteria.
Notes: In biology, a scheme of classifying organisms into six kingdoms: Proposed by Carl Woese et al: Animalia, Plantae, Fungi, Protista, Archaea/Archaeabacteria, and Bacteria/Eubacteria.
Q 11.Who among the following was awarded the Nobel Prize in Medicine in 1926 for his contribution to cancer research?
Answer: Correct Answer:B [Johannes Fibiger]
Notes: Johannes Fibiger was awarded the Nobel Prize in Medicine in 1926 for his contribution to cancer research.
Notes: Johannes Fibiger was awarded the Nobel Prize in Medicine in 1926 for his contribution to cancer research.
Q 12.On which of the following criteria is the five-state system done?
Answer: Correct Answer:D [Mode of Nutrition]
Notes: The main criteria of the five kingdom classification were cell structure, body organisation, mode of nutrition and reproduction, and phylogenetic relationships.
Notes: The main criteria of the five kingdom classification were cell structure, body organisation, mode of nutrition and reproduction, and phylogenetic relationships.
Q 13.Which of the following cell organelles contain RNA?
Answer: Correct Answer:C [Ribosomes]
Notes: Ribosomes are small organelles that contain RNA and specific proteins within the cytoplasm.
Notes: Ribosomes are small organelles that contain RNA and specific proteins within the cytoplasm.
Q 14.How many of the following blood cells are there in the human body?
Answer: Correct Answer:A [25 trillion]
Notes: Adult humans have an average of about 25 trillion RBCs in their bodies. Women usually have fewer RBCs than men
Notes: Adult humans have an average of about 25 trillion RBCs in their bodies. Women usually have fewer RBCs than men
Q 15.When is reverse transcriptase a useful enzyme?
Answer: Correct Answer:A [an RNA virus converts its RNA to DNA]
Notes: Reverse transcriptase is a useful enzyme to have when an RNA virus converts its RNA to DNA. Reverse transcriptase converts RNA sequences into cDNA sequences that are capable of being inserted into different regions of the genome.
Notes: Reverse transcriptase is a useful enzyme to have when an RNA virus converts its RNA to DNA. Reverse transcriptase converts RNA sequences into cDNA sequences that are capable of being inserted into different regions of the genome.
Q 16.What are the inclusion bodies of the measles virus?
Answer: Correct Answer:C [both (a) and (b)]
Notes: The inclusion bodies of the measles virus are intracytoplasmic and intranuclear.
Notes: The inclusion bodies of the measles virus are intracytoplasmic and intranuclear.
Q 17.Which of the following is not an example of bryophytes?
Answer: Correct Answer:D [Selaginella]
Notes: Selaginella is not an example of bryophytes. Selaginella, Equisetum, Pteris, etc.are examples of Pteridophyta.
Notes: Selaginella is not an example of bryophytes. Selaginella, Equisetum, Pteris, etc.are examples of Pteridophyta.
Q 18.What is involved in the release of pollen grains?
Answer: Correct Answer:D [Sporopollenin]
Notes: Sporopollenin is the most chemically inert organic polymer. It is a major component of the tough outer (outer) walls of plant spores and pollen grains.
Notes: Sporopollenin is the most chemically inert organic polymer. It is a major component of the tough outer (outer) walls of plant spores and pollen grains.
Q 19.What are the characteristics of Pteridophyta?
Answer: Correct Answer:D [All of the above]
Notes: Pteridophytes are considered the first plants to develop on land, they are cryptogams, seedless and vascular, the plant body has true roots, stems and leaves, spores develop into sporangia, sporangia in clusters on the sporophyll sex organs are multicellular.
Notes: Pteridophytes are considered the first plants to develop on land, they are cryptogams, seedless and vascular, the plant body has true roots, stems and leaves, spores develop into sporangia, sporangia in clusters on the sporophyll sex organs are multicellular.
Q 20.Where is the phloem located?
Answer: Correct Answer:A [outer side of the vascular bundle.]
Notes: The xylem is located towards the adaxial surface of the leaf, whereas the phloem is located towards the axial surface of the leaf.
Notes: The xylem is located towards the adaxial surface of the leaf, whereas the phloem is located towards the axial surface of the leaf.
Q 21.The increase in shoot and root length is called which of the following?
Answer: Correct Answer:A [Primary growth]
Notes: The increase in the length of shoot and root is called primary growth. This shoot is the result of cell division in the apical meristem.
Notes: The increase in the length of shoot and root is called primary growth. This shoot is the result of cell division in the apical meristem.
Q 22.Which of the following is not a characteristic of non-chordates?
Answer: Correct Answer:C [body includes a closed circulatory system]
Notes: Chordates body includes a closed circulatory system. Whereas non-chordates are cylindrical, triploblastic, coelomate, or pseudocoelomate animals, modes of reproduction involve sexual and asexual and respiration takes place through gills, trachea, or body surface.
Notes: Chordates body includes a closed circulatory system. Whereas non-chordates are cylindrical, triploblastic, coelomate, or pseudocoelomate animals, modes of reproduction involve sexual and asexual and respiration takes place through gills, trachea, or body surface.
Q 23.Which of the following are the simplest phyla?
Answer: Correct Answer:C [Porifera]
Notes: Porifera are the simplest phyla. These are commonly called sponges. They are mostly marine and asymmetrical.
Notes: Porifera are the simplest phyla. These are commonly called sponges. They are mostly marine and asymmetrical.
Q 24.Schistosoma and Fasciola are examples of which Phylum?
Answer: Correct Answer:D [Platyhelminthes]
Notes: Schistosoma and Fasciola are examples of Platyhelminthes. Schistosoma causes Schistosomiasis which spreads through contaminated water and Fasciola causes fascioliasis in animals in which the liver of the animal enlarges and the bile ducts are blocked.
Notes: Schistosoma and Fasciola are examples of Platyhelminthes. Schistosoma causes Schistosomiasis which spreads through contaminated water and Fasciola causes fascioliasis in animals in which the liver of the animal enlarges and the bile ducts are blocked.
Q 25.Which of the following is the study of Molluscan Shell?
Answer: Correct Answer:A [Conchology]
Notes: Conchology is the study of mollusk shells. Conchology is one aspect of malacology, the study of molluscs.
Notes: Conchology is the study of mollusk shells. Conchology is one aspect of malacology, the study of molluscs.
Q 26.Flying dragon belongs to which of the following group?
Answer: Correct Answer:B [Iguanas]
Notes: Flying dragon belongs to Iguanas. Flying dragon is a genus of agamid lizards that are also known as Draco. They are arboreal insectivores.
Notes: Flying dragon belongs to Iguanas. Flying dragon is a genus of agamid lizards that are also known as Draco. They are arboreal insectivores.
Q 27.Into how many groups are Aves classified?
Answer: Correct Answer:A [Two]
Notes: The class Aves is divided into two groups – Archaeornithes and Neornithes
Notes: The class Aves is divided into two groups – Archaeornithes and Neornithes
Q 28.Aerobic bones are found in which of the following?
Answer: Correct Answer:D [Pigeon]
Notes: Aerobic bones are found in Pigeon. Columbidae is a bird family of pigeons. It is the only family in the order Columbiformes. These are thick-bodied birds with short necks and short slender bills, with fleshy grains in some species.
Notes: Aerobic bones are found in Pigeon. Columbidae is a bird family of pigeons. It is the only family in the order Columbiformes. These are thick-bodied birds with short necks and short slender bills, with fleshy grains in some species.
Q 29.Which of the following cells is involved in humoral immunity?
Answer: Correct Answer:B [B-cells]
Notes: B cells are a type of lymphocyte responsible for the humoral immune component of the adaptive immune system.
Notes: B cells are a type of lymphocyte responsible for the humoral immune component of the adaptive immune system.
Q 30.Which hormone regulates adrenocorticotropin release in the pituitary gland?
Answer: Correct Answer:B [Corticotropin releasing hormone]
Notes: The corticotropin-releasing hormone regulates adrenocorticotropin release in the pituitary gland.
Notes: The corticotropin-releasing hormone regulates adrenocorticotropin release in the pituitary gland.
Q 31.Which of the following species of Plasmodium don’t cause Malaria?
Answer: Correct Answer:A [Plasmodium piper]
Notes: Plasmodium vivax, falciparum, and malariae species of Plasmodium cause Malaria. Whereas Plasmodium piper species of Plasmodium don’t cause Malaria.
Notes: Plasmodium vivax, falciparum, and malariae species of Plasmodium cause Malaria. Whereas Plasmodium piper species of Plasmodium don’t cause Malaria.
Q 32.Who among the following invented Bt cotton?
Answer: Correct Answer:A [Ernst Berliner]
Notes: Ernst Berliner invented Bt cotton. Genetically modified by the insertion of one or more genes from a common soil bacterium, Bacillus thuringiensis, known as Bt cotton.
Notes: Ernst Berliner invented Bt cotton. Genetically modified by the insertion of one or more genes from a common soil bacterium, Bacillus thuringiensis, known as Bt cotton.
Q 33.The number of chambers in a human heart is____:
Answer: Correct Answer:C [Four]
Notes: The human heart has four chambers, two superior atria and two inferior ventricles. The atria are the receiving chambers and the ventricles are the discharging chambers. The pathway of blood through the human heart consists of a pulmonary circuit and a systemic circuit.
Notes: The human heart has four chambers, two superior atria and two inferior ventricles. The atria are the receiving chambers and the ventricles are the discharging chambers. The pathway of blood through the human heart consists of a pulmonary circuit and a systemic circuit.
Q 34.Solitary cymose inflorescence is observed in ____:
Answer: Correct Answer:D [Gardenia]
Notes: Solitary cymose inflorescence refers to a determinate inflorescence composed of a single flower. Examples include poppy, gardenia (ornamental plant), tulip, etc. Flowers are said to be solitary when the plant bears only one, or when single flowers appear on the ends of lateral branches that are remote from one another.
Notes: Solitary cymose inflorescence refers to a determinate inflorescence composed of a single flower. Examples include poppy, gardenia (ornamental plant), tulip, etc. Flowers are said to be solitary when the plant bears only one, or when single flowers appear on the ends of lateral branches that are remote from one another.
Q 35.Which of the following processes are associated with plants during dark period?
Answer: Correct Answer:D [Conduction and respiration]
Notes: Conduction is the process by which vital nutrients are transported to the different parts of a plant. This process is independent of the light factor. Respiration process in plants is the intake of carbon-dioxide and exhales oxygen during the day as the plants gets energy through the photosynthesis process in which the carbon-dioxide is converted into sugars using the sun light energy, as this process uses carbon-dioxide and water, the resulting gas oxygen is given out as a waste product. During the night, as the photosynthesis process does not take place it exhales the carbon-dioxide itself.
Notes: Conduction is the process by which vital nutrients are transported to the different parts of a plant. This process is independent of the light factor. Respiration process in plants is the intake of carbon-dioxide and exhales oxygen during the day as the plants gets energy through the photosynthesis process in which the carbon-dioxide is converted into sugars using the sun light energy, as this process uses carbon-dioxide and water, the resulting gas oxygen is given out as a waste product. During the night, as the photosynthesis process does not take place it exhales the carbon-dioxide itself.
Q 36.pH of the human blood is ____:
Answer: Correct Answer:C [Slightly Basic]
Notes: Acidity and alkalinity are expressed on the pH scale, which ranges from 0 (strongly acidic) to 14 (strongly basic or alkaline). A pH of 7.0, in the middle of this scale, is neutral. Blood is normally slightly basic, with a normal pH range of 7.35 to 7.45.
Notes: Acidity and alkalinity are expressed on the pH scale, which ranges from 0 (strongly acidic) to 14 (strongly basic or alkaline). A pH of 7.0, in the middle of this scale, is neutral. Blood is normally slightly basic, with a normal pH range of 7.35 to 7.45.
Q 37.Which type of pathogen causes the water-borne disease Ascariasis?
Answer: Correct Answer:C [Parasitic]
Notes: Ascariasis is a disease caused by the parasitic roundworm Ascaris lumbricoides. Infection occurs by eating food or drink contaminated with Ascaris eggs from feces. Ascariasis is most common in places without modern sanitation.
Notes: Ascariasis is a disease caused by the parasitic roundworm Ascaris lumbricoides. Infection occurs by eating food or drink contaminated with Ascaris eggs from feces. Ascariasis is most common in places without modern sanitation.
Q 38.Which part becomes modified as the tusk of elephant?
Answer: Correct Answer:B [Second incisor]
Notes: Tusks are elongated, continuously growing front teeth (incisors) usually but not always in pairs, that protrude well beyond the mouth of certain mammal species. They are most commonly canines, as with warthogs, pig, and walruses but in the case of elephants, elongated incisors. In most tusked species both the males and the females have tusks although the males’ are larger.
Notes: Tusks are elongated, continuously growing front teeth (incisors) usually but not always in pairs, that protrude well beyond the mouth of certain mammal species. They are most commonly canines, as with warthogs, pig, and walruses but in the case of elephants, elongated incisors. In most tusked species both the males and the females have tusks although the males’ are larger.
Q 39.Turmeric is a modified ____:
Answer: Correct Answer:A [Stem]
Notes: Turmeric, (Curcuma longa) is a perennial herbaceous plant of the ginger family (Zingiberaceae) that is tuberous rhizomeor underground stem. The turmeric plant is identifiable by both its characteristic tuberous root and the leaves that extend upward from erect, thick stems arising from the root. Turmeric root is actually a fleshy oblong tuber that is tapered at each end.
Notes: Turmeric, (Curcuma longa) is a perennial herbaceous plant of the ginger family (Zingiberaceae) that is tuberous rhizomeor underground stem. The turmeric plant is identifiable by both its characteristic tuberous root and the leaves that extend upward from erect, thick stems arising from the root. Turmeric root is actually a fleshy oblong tuber that is tapered at each end.
Q 40.Which of the following is not unicellular?
Answer: Correct Answer:D [Hydra]
Notes: Unicellular organism is an organism which only has one cell while a multicellular organism is an organism that made up of more than one cell. Organisms such as amoeba, plasmodium, paramecium are unicellular organisms. Hydra (animal) and spirogyra (plant) are examples of multicellular organism.
Notes: Unicellular organism is an organism which only has one cell while a multicellular organism is an organism that made up of more than one cell. Organisms such as amoeba, plasmodium, paramecium are unicellular organisms. Hydra (animal) and spirogyra (plant) are examples of multicellular organism.
Q 41.Epidermal cells of which part of plant often secrete a waxy water resistant layer on their outer surface?
Answer: Correct Answer:A [Aerial parts only]
Notes: The major role of epidermis is to protect all the parts of the plant. Epidermal cells on the aerial parts of the plant often secrete a waxy, water-resistant layer on their outer surface. This aids in protection against loss of water, mechanical injury and invasion by parasitic fungi.
Notes: The major role of epidermis is to protect all the parts of the plant. Epidermal cells on the aerial parts of the plant often secrete a waxy, water-resistant layer on their outer surface. This aids in protection against loss of water, mechanical injury and invasion by parasitic fungi.
Q 42.Animals with Chitinous exoskeleton are ____:
Answer: Correct Answer:B [Insects]
Notes: Chitin is the main component of the cell walls of fungi, the exoskeletons of arthropods such as crustaceans (e.g., crabs, lobsters and shrimps) and insects, the radulas of molluscs, and the beaks and internal shells of cephalopods, including squid and octopuses. Combined with calcium carbonate, as in the shells of Crustacean and molluscs, chitin produces a much stronger composite for protection.
Notes: Chitin is the main component of the cell walls of fungi, the exoskeletons of arthropods such as crustaceans (e.g., crabs, lobsters and shrimps) and insects, the radulas of molluscs, and the beaks and internal shells of cephalopods, including squid and octopuses. Combined with calcium carbonate, as in the shells of Crustacean and molluscs, chitin produces a much stronger composite for protection.
Q 43.Which one of the following is known as the immovable property in the cell?
Answer: Correct Answer:A [Nucleic acid]
Notes: Nucleic acids are large biological molecules essential for all known forms of life. They include DNA (deoxyribonucleic acid) and RNA (ribonucleic acid). They are merely transmitted from one generation to next.
Notes: Nucleic acids are large biological molecules essential for all known forms of life. They include DNA (deoxyribonucleic acid) and RNA (ribonucleic acid). They are merely transmitted from one generation to next.
Q 44.Which of the digestive organs contains acid?
Answer: Correct Answer:A [Stomach]
Notes: Gastric acid, gastric juice or stomach acid, is a digestive fluid, formed in the stomach. It is composed of hydrochloric acid (HCl), potassium chloride (KCl) and sodium chloride (NaCl). Gastric acid plays a key role in digestion of proteins, by activating digestive enzymes.
Notes: Gastric acid, gastric juice or stomach acid, is a digestive fluid, formed in the stomach. It is composed of hydrochloric acid (HCl), potassium chloride (KCl) and sodium chloride (NaCl). Gastric acid plays a key role in digestion of proteins, by activating digestive enzymes.
Q 45.Cinnamon is obtained from which part of the plant?
Answer: Correct Answer:A [Bark]
Notes: Cinnamon is a spice obtained from the inner bark of several tree species from the genus Cinnamomum. Cinnamon is used mainly as an aromatic condiment and flavoring additive in a wide variety of cuisines. The aroma and flavor of cinnamon derive from its essential oil and principal component, cinnamaldehyde, as well as numerous other constituents, including eugenol.
Notes: Cinnamon is a spice obtained from the inner bark of several tree species from the genus Cinnamomum. Cinnamon is used mainly as an aromatic condiment and flavoring additive in a wide variety of cuisines. The aroma and flavor of cinnamon derive from its essential oil and principal component, cinnamaldehyde, as well as numerous other constituents, including eugenol.
Q 46.The virus of AIDS affects the growth of ____:
Answer: Correct Answer:B [T cells in blood]
Notes: Human immunodeficiency virus (HIV) attacks and kills crucial immune system cells, known as T-helper cells. A T cell, or T lymphocyte, is a type of lymphocyte (a subtype of white blood cell) that plays a central role in cell-mediated immunity. They are called T cells because they mature in the thymus from thymocytes.
Notes: Human immunodeficiency virus (HIV) attacks and kills crucial immune system cells, known as T-helper cells. A T cell, or T lymphocyte, is a type of lymphocyte (a subtype of white blood cell) that plays a central role in cell-mediated immunity. They are called T cells because they mature in the thymus from thymocytes.
Q 47.Cholesterol is absent in ___:
Answer: Correct Answer:A [Groundnut oil]
Notes: 100g of peanut oil (groundnut oil) contains 17.7g of saturated fat, 48.3g of monounsaturated fat, 33.4g of polyunsaturated fat, and 0mg of cholesterol. It is fast replacing dairy products due to the absence of cholesterol.
Notes: 100g of peanut oil (groundnut oil) contains 17.7g of saturated fat, 48.3g of monounsaturated fat, 33.4g of polyunsaturated fat, and 0mg of cholesterol. It is fast replacing dairy products due to the absence of cholesterol.
Q 48.Which of the following hormones is known to be helpful in coping with stress?
Answer: Correct Answer:A [Serotonin]
Notes: Serotonin is a chemical that relays information from one part of the brain to another and is known to play a key role in a number of functions ranging from sleep to social behaviour. Indian scientists have discovered that serotonin boosts energy production in brain cells and helps them survive under stress.
Notes: Serotonin is a chemical that relays information from one part of the brain to another and is known to play a key role in a number of functions ranging from sleep to social behaviour. Indian scientists have discovered that serotonin boosts energy production in brain cells and helps them survive under stress.
Q 49.Capra Hircus is the scientific name of ____:
Answer: Correct Answer:D [Goat]
Notes: Capra Hircus is the scientific name of domestic goat or simply goat. It is a subspecies of C. aegagrus domesticated from the wild goat of southwest Asia and Eastern Europe. The goat is a member of the animal family Bovidae and is closely related to the sheep; both are placed in the goat-antelope subfamily Caprinae.
Notes: Capra Hircus is the scientific name of domestic goat or simply goat. It is a subspecies of C. aegagrus domesticated from the wild goat of southwest Asia and Eastern Europe. The goat is a member of the animal family Bovidae and is closely related to the sheep; both are placed in the goat-antelope subfamily Caprinae.
Q 50.Yellow spots on citrus leaves is due to the deficiency of _____:
Answer: Correct Answer:D [Magnesium]
Notes: The deficiency of magnesium leads to yellowish green blotch near the base of the leaf between the midrib and the outer edge (chlorosis). The yellow area enlarges until the only green remaining is at the tip and base of the leaf as an inverted V-shaped area on the midrib.
Notes: The deficiency of magnesium leads to yellowish green blotch near the base of the leaf between the midrib and the outer edge (chlorosis). The yellow area enlarges until the only green remaining is at the tip and base of the leaf as an inverted V-shaped area on the midrib.