Question

The period of suspended growth due to exogenous condition is termed as
A.Quiescence
B.Dormancy
C.Perennation
D.Hibernation

Answer 1

It is a survival tactic that many plant species show, enabling them to live in conditions where growth is unfit for most of the year, like winter and dry seasons.

Complete answer:
First we should know about plant development to answer this question. Buds, stems, roots, leaves and flowers are essential structures in plant development; plants create these tissues or structures through meristem placed also at tips of organs as well as between tissue types during their lifespan. A live plant still has embryonic tissues, thus. In comparison, an animal foetus will generate all the body parts it will ever get in its life at a very early stage.
Now, let us find the solution from the options-
- Quiescence is a transient stage of the cell cycle in which populations of cells pause until they are triggered and re-enter the cell cycle and do not reproduce. Thus, option A is not the correct option.
- Dormancy is a time in the life cycle of an organism where development, growth, and physical activity are effectively stopped. This minimises metabolic activity and thus helps save energy for an organism. Dormancy appears to be closely correlated with factors in the climate.
- In botany, the ability of species, particularly plants, to persist from one season of germination to another, especially in unfavourable stresses such as drought and winter, is perennial. Usually, it entails the production of a perennial organ, which retains sufficient nutrients throughout the adverse season to support the organism, and grows into one or more new trees the following year. Thus, option C is not the correct option.
- Hibernation for endotherms is a condition of reduced exercise and metabolic depression. Hibernation is a periodic hyperthermia that is characterised by low body temperature, low metabolic rate, and sluggish breathing and heart rate. It happens most often during the winter months. Thus, option D is not the correct option.

Hence, the correct answer is option (B).

Note: Organisms will by predictive or consequential methods synchronise entry to a dormant process with their setting. When an individual reaches a dormant state until the onset of adverse circumstances, predictive dormancy happens