Chlorophyll: green photosynthetic pigment that absorbs sunlight and uses its energy to synthesise carbohydrates from CO₂ and water; Nostoc: an example of Diazotroph that fix atmospheric nitrogen gas into a more usable form such as ammonia; Transpiration: evaporation of water from plant leaves; Rust of Wheat: a fungal plant disease that affects wheat, barley and rye stems, leaves and grains.

Correct Option: C

Chlorophyll: green photosynthetic pigment that absorbs sunlight and uses its energy to synthesise carbohydrates from CO₂ and water; Nostoc: an example of Diazotroph that fix atmospheric nitrogen gas into a more usable form such as ammonia; Transpiration: evaporation of water from plant leaves; Rust of Wheat: a fungal plant disease that affects wheat, barley and rye stems, leaves and grains.

Glycolate is the major substrate for photorespiration. The enzymes of glycolate metabolism, e.g. glycolate oxidase and catalase, are present in substantial quantities in leaf extracts from both high and low capacity plants. Glycolate has been detected in leaves of both types of plants.

Correct Option: C

Glycolate is the major substrate for photorespiration. The enzymes of glycolate metabolism, e.g. glycolate oxidase and catalase, are present in substantial quantities in leaf extracts from both high and low capacity plants. Glycolate has been detected in leaves of both types of plants.

Pulse, in botany, is a common name for members of the Fabaceae (Leguminosae), a large plant family. Pulses, high in protein, are used as food for humans and other animals. Besides, they play a key role in crop rotation due to their ability to fix nitrogen.

Correct Option: B

Pulse, in botany, is a common name for members of the Fabaceae (Leguminosae), a large plant family. Pulses, high in protein, are used as food for humans and other animals. Besides, they play a key role in crop rotation due to their ability to fix nitrogen.

Holstein Friesians are a breed of cattle known today as the world’s highest-production dairy animals. The cattle is characterized by good durability, high productivity and high fat and protein levels in milk, making it a cost-effective and highly profitable livestock on farms around the world.

Correct Option: D

Holstein Friesians are a breed of cattle known today as the world’s highest-production dairy animals. The cattle is characterized by good durability, high productivity and high fat and protein levels in milk, making it a cost-effective and highly profitable livestock on farms around the world.

Denitrification is the biological conversion of nitrate to nitrogen gas, nitric oxide or nitrous oxide. It refers to nitrate reduction by bacterial species such as Pseudomonas and Clostridium, usually in anaerobic conditions that ultimately produces molecular nitrogen (N2). These bacteria use nitrate as an electron acceptor instead of oxygen during respiration.

Correct Option: C

Denitrification is the biological conversion of nitrate to nitrogen gas, nitric oxide or nitrous oxide. It refers to nitrate reduction by bacterial species such as Pseudomonas and Clostridium, usually in anaerobic conditions that ultimately produces molecular nitrogen (N2). These bacteria use nitrate as an electron acceptor instead of oxygen during respiration.