19.
The organic compound that contain nitrogen is
Answer : C. Protein
20.
Legume root nodule contains a protein pigment is known as
Answer : B. Leghaemoglobin
21.
In plants, enerygy is produced during the process of
Answer : C. Photosynthesis
22.
The green leaves performing photosynthesis are known as
Answer : B. Foliage leaves
23.
Match List-I with List -II and select the correct answer using the codes given below the lists:
Answer : A. a-3 ,b-4 ,c-1 ,d-2
24.
Ganong's photometer is used to measure the
Answer : B. loss of water by plants