Question

Plants store waste materials in
a) Old leaves
b) Vacuoles
c) Both A and B
d) None of the above

Answer 1

Hint: Every living organism undergoes several metabolic processes that keeps it in touch with the surrounding. Therefore, it being universal these metabolic processes also release some useless or waste products. Such products are stored.and timely removed by the body of organisms through the process of excretion.

Complete solution:
Process of excretion is common to all living beings. As they consume some or the other thing to extract energy which in turn leads to formation of some useless products. Waste products are produced at both cellular and organ level processes, therefore,they need to be temporarily stored and permanently removed timely to avoid their disruption with regular processes.
Planhave a variety of options in which they can temporarily store their waste products and eventually remove it from the body. Let's study about each option in detail to decide if it is the correct option.
Plants store their waste products in various parts such as stems, trunk, bark, old leaves. Trunks, stems and barks shift these waste products towards their outermost layer that makes the plant surface harder and stronger to be cut or harmed by predators. Whereas, old leaves being weak, fall off the plant body therefore take away the waste products as well. Such an approach is adopted by plants so that they can remove waste products from the body without interrupting other metabolic processes. Besides these, vacuole, a plant cell organelle, is also found to store waste products at a cellular level. It is a membranous organelle that is found in plant cells only. Therefore we can say that both the options A and B are correct.

Thus, option C is the correct option that says both A and B are correct.

Note:
Plants release waste products in various forms such as gases like oxygen, carbon dioxide, and water vapor as by-products of metabolic processes. Also, components like tannins, resins, latexes, nicotine, quinine, caffeine, morphine, alkaloids, gums, etc. are also few of the waste products of plants. However, these are of great use for humans.