Chapter 23, Problem 29A

Summary Introduction

Introduction :

Fertilization is just the beginning of a long phase that concludes finally with seed forming. A seed in anthophytes is part of a fruit that grows from the ovary, and also from other organs of the flower.

Answer to Problem 29A

Correct answer :

The correct answer is option (d) pollen

Explanation of Solution

Explanation/justification for the correct answer :

Option (d) pollen. Pollens are developed in the male reproductive organs of the plant. A stamen is the male reproductive organ which is made up of filament and anther. Inside the anther there are cells which undergo meiosis and then mitotic divisions, producing pollen grains. So, the correct answer is option (d).

Explanation for incorrect answer :

Option (a) cotyledon. Numerous cell division produce a cluster of cells that eventually develops into an elongated embryo with one cotyledon in monocots or two cotyledons in dicots and eudicots. So, this is an incorrect answer.

Option (b) embryo. The sporophyte starts as a zygote which later develops into embryo. So, this is an incorrect answer.

Option (c) endosperm. Endosperm is the result of double fertilization which provides nutrition to the developing embryo. So, this is an incorrect answer.