7.
Consider the statements: I. Viruses are obligatory endoparasites of living cells. II. Viruses have genetic material. III. Viruses can be crystallised. IV. Viruses do not have mitochondria. Of these statements:
Answer : D. All the above
8.
Which of the following is NOT correctly matched?
Answer : C. Cytokinin - promotes ageing process
9.
The unicellular algae used in space craft to regulate oxygen supply is
Answer : B. Chlorella
10.
which one of the following statements regarding starch and cellulose is NOT correct?
Answer : C. Starch and Cellulose both gives blue-black color with Iodine
11.
Diffusion means
Answer : B. the movement of molecules from a regoin of greater concentration to lesser concentration
12.
based on the cellular type the algae chlorella belongs to
Answer : D. Both A and B