Taking in liquid material into the cells is known as_____.

1. 1. Pinocytosis
   2. Phagocytosis
   3. Both a and b
   4. Exocytosis

Blood is carried towards the heart by _____.

1. 1. Arteries
   2. Veins
   3. Capillaries
   4. All of these

The major constituent of blood plasma is_____.

1. 1. Protein
   2. NaCl
   3. Cholesterol
   4. Water

Which of the following animals has a respiratory system with one way flow of the air through the lungs, and the air is renewed after inspiration?

1. 1. Cockroach
   2. Aves
   3. Earthworm
   4. Frogs

Helical structure is kept by the formation of _____bonds among amino acids molecules?

1. 1. Disulphide Bond
   2. Ionic bond
   3. H bonds
   4. Hydrophobic bonds

There are _____hypothesis which may explain opening and closing of stomata?

1. 1. One
   2. Three
   3. Four
   4. Two

Golden brown colour of diatoms is due to presence of_____.

1. 1. Fucoxanthin, diatoxanthin, diadinoxanthin
   2. Mycoxanthin, mucoxanthin and myxoxanthophylls
   3. Alpha and beta carotenes and myxoxanthin
   4. None of them

The number of carpals in our feet is_____.

1. 1. 7
   2. 0
   3. 14
   4. 16

Breeders have developed new and better varieties of food items by using which technique?

1. 1. Genetic engineering
   2. Pasteurization
   3. Hydroponic culture technique
   4. Biological control techniques

Which Vitamin is needed for the formation of a light-sensitive pigment in the retina?

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