The function of chrosomes of carrying genetic information from cell generation to another is performed by _____.

1. 1. RNA
   2. Histones
   3. Calcium
   4. DNA

Which of the following promotes growth in plants?

1. 1. Calvin cycle
   2. Photorespiration
   3. Both of these
   4. All of these

In the root cells _____pathway becomes discontinuous in the endodermis due to the presence of casparian strip.

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

In an annelids, the contraction of circular muscle results in_____.

1. 1. Thinning of body
   2. Lengthening of the body
   3. Shortening of the body
   4. Widening of body

Which of the following statement about the head of a chlorophyll molecule is incorrect?

1. 1. It is hydrophobic
   2. It is a porphyrin ring or tetrapyrrole ring structure
   3. It is flat, square and light absorbing
   4. Composed of carbon and nitrogen atoms with Magnesium as central metal ion, which is coordinated with nitrogen

Which of following system is segmentally arranged in annelids?

1. 1. Excretory system
   2. Criculatory system
   3. Digestive system
   4. Nervous system

New alleles can be introduced into a population’s gene pool by_____.

1. 1. Gene flow
   2. Natural selection
   3. Mutation
   4. Both a & c

The number of chromosomes in human cell is_____.

1. 1. 46
   2. 48
   3. 44
   4. 26

Which of the following is the empirical formula of chlorophyll b?

1. 1. C55H70O5N4Mg
   2. C55H72O6N4Mg
   3. C55H72O5N4Mg
   4. C55H70O6N4Mg

How many species of mushrooms are edible?

1. 1. 100
   2. 3000
   3. 200
   4. 4000