Cell wass of Archaeobacteria does not contain_____.

1. 1. Proteins
   2. Peptidoglycan
   3. Glycoproteins
   4. Polysaccharides

Scurvy and beri – beri and caused by the deficiency of_____.

1. 1. Vitamin C and B
   2. Vitamin B and C
   3. Vitamin B and D
   4. Vitamin A and B

Adult birds normally possess only one functional_____.

1. 1. Ureter
   2. Lung
   3. Testis
   4. Ovary

What percentage of light reaching the earth is used in photosynthesis?

1. 1. 2%
   2. 1%
   3. 5%
   4. 10%

The diffusion of ions along with water also takes place by mass flow system along the _____path?

1. 1. Tonoplast
   2. Symplast
   3. Vacuolar
   4. Apoplast

The term ‘gene’ was first used by _____.

1. 1. Johannsen
   2. Mendel
   3. Lemark
   4. Cuvier

Parabronchi are open at_____end/s?

1. 1. Single
   2. Both
   3. Do not have opening
   4. All of these

The vascular plants are termed as_____.

1. 1. Bryophytes
   2. Tracheophytes
   3. Pteridophytes
   4. None of these

“lub” sound is produced after _____.

1. 1. The bicuspid and tricuspid valves suddenly close
   2. The ventricles are fully contracted
   3. The ventricles start to relax
   4. The semilunar valves are closed

Which of the following has no central nervous system?

1. 1. Hydra
   2. Man
   3. Planaria
   4. Cockroach