Chapter 23, Problem 18A

Summary Introduction

Introduction :

Flower is the most beautiful part of a plant. The colours, shapes, and sizes of flowers are determined by the genetic makeup of each species. Flowers can vary in structure and form from species to species. A flower has many organs. Some organs provide support and protection, whereas others can be involved directly in the reproduction process.In general, flowers have four organs. They are sepals, stamens, petals, and pistils.

Answer to Problem 18A

Correct answer :

The correct answer is option (A) perfect, complete.

Explanation of Solution

Explanation/justification for the correct answer :

Option (A) perfect, complete. The flowers that have all the four organs namely sepal, stamens, petals, and pistils are known as complete flower. The flowers that have both pistils and stamens are known as perfect flower. In the given diagram of a flower, all the four organs are present. So, the correct answer is option (A).

Explanation for incorrect answer :

Option (B) perfect, incomplete. In the given diagram, the flower has sepals, stamens, petals, and pistils. Imperfect flower bear either pistils or stamens. So, this is an incorrect option.

Option (C) imperfect, incomplete. Incomplete flowers do not have all the four organs i.e. sepals, stamens, petals, and pistils. The given diagram has the all four organs.So, this is an incorrect answer.

Option (D) imperfect, complete. The given diagram of a flower is perfect and complete as it has all four organs that a complete flower has.So, this is an incorrect answer.