CIE Biology Paper-1: Specimen Questions 29 - 31 of 109

Question number: 29

MCQ▾

Question

Type of Graphis lichen is?

Choices

Choice (4) Response
a.

crustose

b.

fruticose

c.

Foliose

d.

Filamentous

Answer

a.

Explanation

Crustose Lichens: It is a habit of some types of lichens in which the plant grows tightly to a substrate forming a biological layer of the adhering creature.

Question number: 30

MCQ▾

Question

Define osmosis?

Choices

Choice (4) Response
a.

Separation of substances in solution by means of their unequal diffusion through semipermeable membranes.

b.

Movement of water across a semi-permeable membrane

c.

Method of producing pure water, a solvent passes by a semipermeable membrane in a direction opposite to that for natural osmosis when it is subjected to a hydrostatic pressure greater than the osmotic pressure

d.

The process in which there is movement of a substance from an area of high concentration of that substance to an area of lower concentration

Answer

b.

Explanation

Diffusion of fluid by a semipermeable membrane from a solution with a low solute concentration to a solution with a higher solute concentration until there is an equivalent solute concentration on both sides of the membrane.

Question number: 31

MCQ▾

Question

Which organ discharge a chemical substance, which blends fats and makes the diet alkaline?

Choices

Choice (4) Response
a.

Pancreas

b.

intestine

c.

Stomach.

d.

Liver

Answer

d.

Explanation

The liver is the largest organ in the human body the main functions of liver are

  • Storage of Nutrients
  • Breakdown of erythrocytes
  • Bile Secretion
  • Synthesis of plasma Proteins
  • Synthesis of cholesterol
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