The complete digestion of carbohydrates, proteins and fats occurs in

• stomach

• liver

• small intestine

• large intestine

Which one among the following statements about a healthy diet is correct?

• Regular eating of high-energy snacks between meals is healthy since it provides energy and vitamins in plenty

• Fruits and vegetables make a good choice because their energy content is high

• A balanced diet must contain plenty of fat and protein with little carbohydrates and fibre

• An optimal quantity of fat, protein carbohydrate with adequate amount of water and fibre makes a healthy diet

103.

The sex of a newborn baby is determined by the chromosome inherited from

• the mother

• the father

• mother's mother

• father's father

Consider the following diseases:

1. Cholera
2. Tuberculosis
3. Filaria
4. Typhoid

Which of the above diseases are caused by bacteria?

• 1 and 3 only

• 2 and 4 only

• 1, 3 and 4

• 1, 2 and 4

Consider the following statements in relation to plant tissue 'chlorenchyma':

1. It is formed by the palisade and spongy mesophyll.
2. It is a form of parenchyma which contains chloroplasts.
3. It serves to transport organic solutes made by photosynthesis.
4. It is a thin transparent layer which has chiefly a protective function.

Which of the statements given above is/are correct?

• 1 and 3 only

• 1 and 2 only

• 2 and 4

• 1 only

Consider the following statements regarding osmosis in animal cells :

1. If the water potential of the solution surrounding the cell is too high, the cell shrinks.
2. If the water potential of the solution surrounding the cell is too low, the cell swells and bursts.
3. It is important to maintain a constant water potential inside the animal body.
4. In animal cells, water potential far exceeds the solute potential.

Which of the statements given above is/are correct?

• 1 and 2

• 3 only

• 4 only

• 2 and 3

Which one among the following terms is used to describe a plant that grows only in a mountainous environment?

• Orophyte

• Geophyte

• Epiphyte

• Bryophyte

Presbyopia is a visual defect caused by

• Elongation of the eye ball

• Shortened curvature of the eye lens

• Weakening of the ciliary muscles

• Gradually increasing flexibility of the eye lens

Which one among the following animals does not undergo periodic moulting of their external body covering?

• Cockroach

• Cobra

• Earthworm

• Dragonfly

Which one among the following organs in humans is not involved in elicitation of immune response?

• Thymus

• Brain

• Spleen

• Lymph Nodes