Biology MCQs

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Nutrition is plants is classified into two main categories: autotrophic and heterotrophic. Heterotrophic plants are further classified into saprophytes, parasite and insectivores.
Saprophytes are those plants which grow and live on dead organic matter including animal and plant remains
Insectivorous plants are autotrophic but develop adaptations to trap insects in order to supplement the deficiency of Nitrogen in the soil. They feed on insects. They are generally found in nitrogen deficient habitats and hence to compensate the loss, they use insects as a source of nitrogen.

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Lactic Acid is a common end product of Anaerobic Respiration. Anaerobic respiration is the type of respiration through which cells can breakdown sugars to generate energy in the absence of oxygen.

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Cell membranes contain some biochemicals which are responsible for cell recognition and adhesion. They are glycoproteins and glycolipids. Lipid and proteins on the cell membrane surface often have short carbohydrate chains protruding out from the cell surface which are known as glycolipids and glycoproteins.

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In Ginger the part that we eat is actually the root which is also called as Rhizome of the plant. A rhizome is a modified stem that grows horizontally underground.

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This process requires that a high pressure be exerted on the high concentration side of the membrane.

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Hemophilia is an inherited bleeding disorder in which a person lacks or has low levels of certain proteins called “clotting factors” and as a result, the blood doesn’t clot properly. Clotting factor is a protein in blood that controls bleeding. If you have hemophilia, you may bleed for a longer time after an injury than you would if your blood clotted normally. Hemophilia is quite rare. About 1 in 10,000 people are born with it.

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The cultivation of Jatropha curcas on wastelands has a potential to generate biofuel in large quantities. It is a species of flowering plant in the spurge family called Euphorbiaceae, that is native to the American tropics, most likely in Mexico and Central America.

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Pellagra is caused by deficiency of Nicotinic acid. Niacin which is also known as nicotinic acid, is an organic compound. It is a form of vitamin B3, an essential human nutrient.

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Coir is the nature fibre obtained from mescocarp of the coconut fruit. Coconut fruit has three layers viz. Exocarp, MesoCarp and Endocarp. Exocarp is the outer green layer, Mesocarp is the fleshy, which becomes husk on drying middle layer and endocarp is the inner woody layer.

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Necrosis is the name of premature death of cells and living tissue. It refers to the death of most or all of the cells in an organ or tissue due to disease, injury, or failure of the blood supply.