Question

Match and find the correct combination

(a)	Chlorophyll a	(i)	Yellow
(b)	Chlorophyll b	(ii)	Bright or blue green
(c)	Xanthophyll	(iii)	Yellow, yellow orange
(d)	Carotenoids	(iv)	Yellow green

• A. a-ii, b-iv, c-i, d-iii
• B. a-iii, b-iv, c-ii, d-i
• C. a-iv, b-iii, c-ii, d-i
• D. a-iv, b-ii, c-i, d-iii

Answer 1

Answer: (A)

a-ii, b-iv, c-i, d-iii

Photosynthesis takes place in the green leaves of plants and another green part of plants like stem etc. The most active photosynthetic tissue in higher plants is the mesophyll of leaves. Special pigments present in photosynthetic cells are known as photosynthetic pigments. Photosynthetic pigments have an ability to absorb light at specific wavelengths. Following are the types of photosynthetic pigments:

1. Chlorophyll a - It is the primary photosynthetic pigment. It absorbs light of bright or blue-green colour. It is the main pigment, others are accessory pigments.
2. Chlorophyll b - It is accessory pigment. It absorbs light of yellow-green colour.
3. Xanthophyll - It is accessory pigment. It absorbs light of yellow colour. It contains oxygen.
4. Carotenoids - It is also an accessory pigment. It absorbs yellow and yellow-orange light. Autumnal leaf colour is due to carotenoids.

Thus, the correct answer is option A.