Question

The aerial roots are found in:
A. Wheat
B. Groundnut
C. Orchids
D. None of the above

Answer 1

Aerial roots are those that grow above earth. They are nearly usually haphazard. This plant organ, which may be found in a wide range of plant groups, has varying specialisations depending on the plant's environment. They can be classified as negatively gravitropic (grows up and away from the ground) or positively gravitropic (grows up and away from the earth) based on their general growth type (grows down toward the ground).

Complete explanation:
Option A: The wheat plant has two types of roots: seminal (seed) roots and nodal (crown or adventitious) roots, which form after germination.
So, option A is incorrect.
Option B: Groundnut is herbaceous perennial with a tap root and a well-developed root system. On the second day following seed germination, tap root emerges with a large root cap.
So, option B is incorrect.
Option C: Aerial root is a form of root that emerges from the plant's stem, i.e., above earth. The roots of epiphytes (e.g., orchids) are an example of this. Aerial roots nourish the orchid by absorbing humidity from the surroundings.
So, option C is correct.
Option D: Aerial root is a type of root that grows above ground from the plant's stem. Epiphytes' (e.g., orchids') roots are an example of this. The orchid is nourished by aerial roots that absorb humidity from the environment.
So, option D is incorrect.

Hence, Option C is the correct answer.

Note:
Aerial roots are those that sprout on a plant's above-ground components. Aerial roots aid in the securely anchoring of the plant as well as the intake of water and nutrients. Water and nutrients may be ingested by aerial roots through the air. Aerial roots come in a variety of shapes and sizes, and some, like mangrove, are utilised for aeration rather than water absorption.