Biology GK Questions Quiz-75

1481.The only living tissue in plant xylem is (1) Trachea (2) Xylem fibre (3) Xylem parenchyma (4) Tracheid Answer: 1481.(3) Xylem parenchyma is the only living component found in xylem tissue. They are living cells associated with the xylem that are found in between the vessels and the fibers. They act as storage house of starch and fat with assisting in conduction of water. Xylem is a complex permanent tissue specialized for the conduction of water and mineral substances in plants. 1482.‘Insectivorous plants’ trap insects for (1) Nitrogen (2) Fats (3) Vitamins (4) Carbohydrates Answer: 1482.(1) Insectivorous plants trap insects because they grow in a soil which is deficient in nitrogen (such as acidic bogs and rock outcrops). The insects they feed on help them in fulfilling their nitrogen needs. Venus flytrap, pitcher plant, utricularia, drosera and Rafflesia are the examples of insectivorous plants. 1483.Riboflavin is a/an (1) Vitamin  (2) Hormone (3) Fatty acid  (4) Enzyme Answer: 1483.(1) Riboflavin…