Question 1

Which pigment acts as the primary photosynthetic pigment in higher plants?

Accepted Answer

Chlorophyll a is the primary photosynthetic pigment responsible for trapping light energy and initiating the light reactions of photosynthesis in higher plants.

Question 2

The site of dark reaction (biosynthetic phase) of photosynthesis in chloroplasts is:

Accepted Answer

The stroma is the fluid-filled matrix of the chloroplast where the enzymes responsible for fixing carbon dioxide into carbohydrates during the dark reaction are located.

Question 3

Photolysis of water is associated with:

Accepted Answer

Photolysis of water takes place in Photosystem II, where water molecules are split into oxygen, protons, and electrons to replace the electrons lost by P680.

Question 4

The first carbon dioxide acceptor in C3 plants is:

Accepted Answer

Ribulose 1,5-bisphosphate (RuBP) is a 5-carbon compound that acts as the primary acceptor of carbon dioxide in the Calvin cycle of C3 plants.

Question 5

Kranz anatomy is a characteristic feature of:

Accepted Answer

Kranz anatomy, characterized by bundle sheath cells surrounding vascular bundles, is a distinct feature found in leaves of C4 plants.

Photosynthesis in Higher Plants — NCERT Class 11 Biology Important Questions & Revision Notes