Study the following statements about virus.
I. The presence of nucleic acid as their genetic material.
II. Ability to produce their own copies.
III. Cellular organisation.
IV. Autotrophic nutrition.
The living characteristic of virus is

Which of the following statements correctly defines growth? I. Increase in size of cells. II. Increase in the number of cells. III. Increase in the amount of apoplasmatic structures. IV. Decrease in amount of living material.

Consider the following statements about retrovirus, I. It has an enzyme located in its coat. II. In it , the newly formed DNA integrates in host genome. III. It has a dsDNA as a genetic material. IV. Some of them are highly oncogenic. Choose the correct answer using the codes given below .

Indentify the false statement from the following. I. The presence of uropygial gland is associated with pigeon. II. Migration of birds is studied under 'Phenology' III. The presence of bone marrow and preen gland are fundamental characteristics of class-A ves.

Consider the following statements about mycoplasma and mark as true/false. I. They lack cell wall and pili. II. They contain circular ssDNA as genetic material. III. They lack histones. IV. They cause bunchy top of papaya in plants. Choose the correct option.

Which of the following statements are true? I. Molluscs possess cellular level of organisation. II. Arthropods are true coelomates. III. Platyhelminthes are pseudocoelomates. IV. Ctenophores have bilateral symmetry. Choose the correct option.

Read the following statements. Which of the following statements about RNA molecule is incorrect? I. It has a double helical structure. II. It contains ribose which is a cyclic aldopentose monosaccharide. III. It is the genetic material in all animal viruses. IV. It contains the ribothmidylic acid.

Read the following statements. Which of the following statements about RNA molecule is incorrect? I. It has a double helical structure. II. It contains ribose which is a cyclic aldopentose monosaccharide. III. It is the genetic material in all animal viruses. IV. It contains the ribothmidylic acid.