Plant Anatomy And Physiology - Study Mode
[#491] Apples are generally wrapped in waxed paper to
Correct Answer
(B) prevent aerobic respiration by checking the entry of O 2
[#492] Consider the following statements regarding xerophytes and choose the correct answer: 1. The root system is very well developed in proportion to the shoot 2. In plants, such as Agave, the cells of mesophyll are very loosely packed 3. In majority of xerophytes the leaves are thick, fleshy with water storage tissue 4. In Opuntia, the function of photosynthesis is taken up by the stem itself
Correct Answer
(A) Only 1, 3 and 4 are true
[#493] Consider the following statements and choose the correct answer: 1. The process of soil formation is so slow that soil may be considered as a non-renewable resource 2. Soil pollution may be the direct effect of dumping and disposal of wastes, application of agrochemicals or the indirect result of air pollution 3. Pesticides increase the population and number of species of living organisms which facilitate the structure and fertility of the soil 4. Several pesticides or their degradations are absorbed by the plants
Correct Answer
(D) Only 1, 2 and 4 are true
[#494] Assertion (A) Hormones are also called growth adjusters. Reason (R) Hormones promote or inhibit plant growth.
Correct Answer
(A) Both A and R are true and R is the correct explanation of A
[#495] Water will move out of the plant instead of being absorbed if
Correct Answer
(B) The water potential of the soil solution is more negative than that of the cell sap of the root cells