Chapter 21, Problem 6A

Summary Introduction

Introduction:

Plants are found everywhere on the earth. To live in variety of habitats, various adaptations are evolved in the plants that help to survive and reproduce in diverse conditions.

Answer to Problem 6A

Correct option is, option (B), dicot seeds.

Explanation of Solution

Explanation for correct options:

(B), dicot seeds. The given figure is of dicot seeds. Dicot seeds came into existence already adapted for growing in the land environment. No more adaptations were needed by theses seeds to survive on land. Hence, option (B) is correct.

Explanation for incorrect options:

(A), cuticle. Cuticle is a waxy layer found on the surface of leaves. This is a kind of adaptation for plants to survive on land. Cuticle prevents excess water loss from the plants. Hence, option (A) is incorrect.

(C), stomata. Stomata are constituted of two guard cells. The function of stomata is to prevent excess water loss by change the size of its pore. This is an important land environment adaptation in plants. Hence, option (C) is incorrect

(D), monocot seeds. Monocot plants are the oldest kind, so they had to adapt themselves for land conditions to survive. Hence, option (D) is incorrect