Which structure in plants produces a substance that protects the extending roots from developing friction? a. root cap
b. stele
c. stem
d. epidermis

The correct answer is - option a. root cap.

Explanation:

Roots of the plants are developed from the structure called radical in seed during germination of seed.The tip of the root is tender due to the present of the apical meristem that is the precursor of the new cells of the root and protected by the root cap and penetrate in to the soil with the help of mucigel. Mucigel is the which protects the extending roots from developing friction.

Thus, the correct answer is : option a. root cap.

the correct option is option a

from the original order (top to bottom) the new order will go

1 (founder)

4 (hawk)

2 (mutate)

3 (next generation)