Question

A pigment concerned with both floral induction and seed germination is
A. Florigen
B. Chlorophyll
C. Plastocyanin
D. Phytochrome

Answer 1

Hint: The process of development of a new plant from the seed under suitable environmental conditions such as light, temperature, sunlight, quantity of water etc is called the germination of seeds. Seed is the product of sexual reproduction.

Complete answer:
The seed is formed as a result of sexual reproduction. The physiological process in the plant which makes the plant competent to develop flowers is called floral induction. The process of floral induction takes place in the apical meristematic tissue of the shoot of plants. It is a light dependent process which means that light is an essential factor for the development of the flower.
Chlorophyll is a green coloured pigment present in the leaves of plants that provide green colour to the plants. The chlorophyll is a green coloured pigment which is essential for the food preparation in plants. The process by which green plants prepare their food material by using sunlight and chlorophyll to produce carbohydrate and release molecular oxygen is called photosynthesis.
Phytochrome is a type of photoreceptor that takes part in many plant processes. It is found in the plants, bacteria and fungi to detect light. Since both seed germination and floral induction are light dependent processes they take place in presence of phytochrome pigment.

Hence, the correct answer is option (D)

Note: Florigen is a plant hormone present in the apices of plants and is responsible for flowering in plants. The process of formation of buds and flowering is triggered by the plant hormone Florigen.