Question

Plants get rid of waste by which of the following methods?
A. Transpiration
B. Shedding of leaves
C. Peeling of bark
D. All of the above

Answer 1

Hint: Removal of the waste products by the plants products by the plants or other living organisms is called excretion. Plants remove waste material by the process of diffusion.

Complete answer
Plants being the living organism represents all the life process of life. Plants prepare their own food by the process of photosynthesis and utilizes the food for obtaining energy from it. While performing the life processes, waste substances are also produced which get accumulated in various parts of the plants. Accumulation of waste in the plants can cause damage to the plant as well.
A. Transpiration: Transpiration is defined as the evaporation of water from the plant surface via leaves or stem. Through transpiration excess of water is removed from the plant. Transpiration helps in maintaining the suitable temperature around the leaf that keeps the leaf cool.
B. Shedding of leaves: Metabolic waste of plants is stored in the leaf cell vacuole which plants get rid by shedding of leaves.
C. Peeling of bark: Bark is the outer layer of stem which is formed by the dead cambium tissue. Cambium tissue is responsible for providing thickness to the trunk. As cambium grows in size the outer layer becomes dead and is known as bark. Excretory products such as Resin and gum extrudes out of the bark.

The correct option is “D”, all of the above.

Note:Roots of plants also excrete organic compounds to the soil such as sugar, amino acids and phenols.(ii) Organic acids are present in roots exudates and helps in nutrient mobilization most efficient for phosphorus.