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

Production of sweat and sebum is related with_____.

1. 1. Skin
   2. Liver
   3. Lungs
   4. GIT

Alternation of generations is absent in_____.

1. 1. Obelia
   2. Jelly fish
   3. Hydration
   4. Physalia

Ingestion of bacteria by certain type of cells is termed as _____.

1. 1. Phagocytosis
   2. Acclimatization
   3. Agglutination
   4. Paralysis

Which of the following is the smallest known virus_____.

1. 1. Hepatitis virus
   2. Retrovirus
   3. Pox virus
   4. Polio virus