Question

Match Column-I with Column-II and select the correct option from the codes given below.
$$\begin{array}{cc}\text{Column - I}& \text{Column - II}\\ A.C_4\text{Plants}& \text{(i) Succulent plants}\\ B.\text{Chlorophyll b}& \text{(ii) Sorghum}\\ C.\text{PS II}& \text{(iii) P-680}\\ D.\text{CAM}& \text{(iv) Accessory photosynthetic pigment}\end{array}$$

• A. A-(i), B-(ii), C-(iii), D-(iv)
• B. A-(iii), B-(ii), C-(iv), D-(i)
• C. A-(i), B-(iii), C-(ii), D-(iv)
• D. A-(ii), B-(iv), C-(iii), D-(i)

Answer 1

The correct option is D A-(ii), B-(iv), C-(iii), D-(i)

$$\begin{array}{cc}\text{Column - I}& \text{Column - II}\\ C_4\text{Plants}& \text{Sorghum}\\ \text{Chlorophyll b}& \text{Accessory photosynthetic pigment}\\ \text{PS II}& \text{P-680}\\ \text{CAM}& \text{Succulent plants}\end{array}$$
Examples of $C_4$ plants include sugarcane, maize, sorghum, amaranth, etc.

Chlorophyll a is found in almost all photosynthetic plants except bacteria. It is called the primary photosynthetic pigment because it performs primary reactions of photosynthesis. Other photosynthetic pigments like chlorophyll b, xanthophylls and carotenes are called accessory pigments. They absorb light energy of different wavelengths.

In photosystem II (PS II), the reaction centre chlorophyll a absorbs 680 ( P680) nm wavelength of red light causing electrons to become excited and jump into an orbit farther from the atomic nucleus.

CAM is a photosynthetic pathway found primarily in succulent plants (e.g., cacti, agaves, orchids).