_____ is a condition in which there is an absence of oxygen supply to an organ’s tissues.

1. 1. Anorexia
   2. Hypoxia
   3. Enuresis
   4. Anoxia

Strengthening material of prokaryotic cell wall is_____.

1. 1. Peptidoglycan or Murein
   2. Inorganic salts silica waxes and ligin
   3. Chitin
   4. Cellulose

Wilkins X-ray diffraction showed the diameter of the DNA helix as _____.

1. 1. 10A
   2. 20A
   3. 30A
   4. 40A

Which of the following is second largest part of the brain_____.

1. 1. Thalamus
   2. Cerebrum
   3. Hypothalamus
   4. Cerebellum

operculum is present in_____.

1. 1. sea fish
   2. cartilaginous fish
   3. bony fish
   4. None of these

Highest form of learning is_____.

1. 1. Latent learning
   2. Operant conditioning
   3. Instinct
   4. Insight learning

Which of the following pairs of fins in a fish body are paired?

1. 1. Tail and anal
   2. Dorsal and ventral.
   3. Pectoral and Pelvi
   4. None of these

Co-ordination in man is brought about by_____.

1. 1. Endocrine system
   2. Nervous system
   3. Both (a) and (b)
   4. None of these.

The partly digested food is stored in _____ cockroach?

1. 1. Gizzard
   2. Hepatic caeca
   3. Rectum
   4. Crop

Nutritionally Viruses are_____.

1. 1. Obligate parasite
   2. Absorptive heterotrophs
   3. Autotrophs
   4. Heterotrophs