Q. 1. An element playing important role in nitrogen fixation is :
Answer: (1)
Q. 2. Select the correct statement from the ones given below:
Answer: (2)
Q. 3. Listed below are four respiratory capacities (a − d) and four jumbled respiratory volumes of a normal human adult: Respiratory Respiratory
capacities volumes.
Which one of the following is the correct matching of two capacities and volumes?
Answer: (3)
Q. 4. Transfer of pollen grains from the anther to the stigma of another flower of the same plant is called:
Answer: (2)
Q. 5. ABO blood groups in humans are controlled by the gene I. It has three alleles − IA, IB and i. Since there are three different alleles, six different genotypes are possible. How many phenotypes can occur?
Answer: (3)