Question

Annual plants lacking perennating buds belong to
A) Therophytes
B) Cryptophytes
C) Phanerophytes
D) chamaephytes

Answer 1

Hint:The plants are classified based on various characteristics like; tissue arrangement, depending on the habitats, climate, shape, and size. The Raunkiaer’s system of classification depends on the climatic condition of the plant's growth.

Complete answer:
To solve this question, we should know about different life forms of plants. The plants are classified according to the place where the growth point is found when the season is not so favorable; the plants maintain their capacity to survive such conditions. Depending on the unfavorable season they are classified as; Epiphytes, phanerophytes, chamaephytes, hemicryptophytes, therophytes, cryptophytes, helophytes, and hydrophytes. These life forms are not distributed evenly on Earth. Each climate zone has its own way of life forms for example; in tropical region many phanerophytes are produced, in desert climate that is also called arid climate therophytes are observed, and in highly temperate zone cryptophytes and hemicryptophytes are found abundantly. By conclude the contribution of the different life forms of some region, we can also conclude the lifeforms spectrum that reflects the relationship of the plant with the climate of that area like in the cold climate phanerophytes are not found and in the dry climate the annuals that is the therophytes are found in a large area.

Now, therophytes are annual plants that have a very short life span when the condition or the climate is favorable and survive as a seed in unfavorable or harsh conditions. They are found mostly in arid and the desert areas. Therefore, the annual plants lacking perennating buds belong to therophytes.
The cryptophytes are found in cold climates like algae and fungi. The phanerophytes are the perennial plants that consist of perennating buds above the ground, and the chamaephytes are woody plants that have the resting buds on the ground.

Thus, the correct option is ‘A’. Therophytes.

Note:The chamaephytes are low growing shrubs in which the buds are formed on or near the ground or to the surface that expose less to the wind. They also lack perennating buds but they are not annual plants.