Question

What is the role of chlorophyll in photosynthesis? A. Chlorophyll reacts with O2 to produce CO2. B. Chlorophyll captures CO2 from the atmosphere. C. Chlorophyll cements the thylakoids into stacks called grana. D. Chlorophyll captures energy from sunlight.

Answer 1

D) option is correct

Step-by-step explanation:

Chlorophyll is a primary photosynthetic pigment which primarily absorb sunlight and drives photosynthesis

• Chlorophyll is simply a lipid molecule consisting of tetrapyrole ring and also contain a cyclopentanone ring fused to pyrole ring III
• In chlorophyll the central metal ion is Mg2+
• A branched hydrocarbon chain called phytol chain associated with ring IV which keeps embedded porphyrin ring in thylakoid membrane
• Chlorophyll a and b are more common photosynthetic pigments

Answer 2

D

Step-by-step explanation:

Photosynthesis occurs in plants and in some other autotrophs, in which they synthesize their food own-self in the presence of sunlight.

They take CO₂ from environment, water from roots and light form sun. Then they produce carbohydrate and O₂.

Chlorophyll capture sunlight and convert this into chemical energy, through which sugars are produced.

Plants produce O₂ which animals use in their respiration.