CIE Biology Paper-1: Specimen Questions 46 - 49 of 109

Question number: 46

MCQ▾

Question

What is the full form of CEPT in waste water treatment technology?

Choices

Choice (4) Response
a.

Chemically effluent primary treatment

b.

Combine energy production treatment

c.

Chemically Enhanced Primary Treatment

d.

Chemical exchange production technology

Answer

d.

Explanation

Combine energy production treatment increase the treatment efficiency and removal of solid organic compounds from the waste water.

Question number: 47

MCQ▾

Question

Number of chromosomes found in normal mature human sperm cell?

Choices

Choice (4) Response
a.

26

b.

23

c.

22

d.

10

Answer

b.

Explanation

Sperm of humans is haploid so it has 23 pair’s chromosomes.

Question number: 48

MCQ▾

Question

Lichen is composed by fungus and alga. The relationship in which both depend on each other is known as

Choices

Choice (4) Response
a.

mutualism

b.

parasitism

c.

Commensalism

d.

Symbiosis

Answer

d.

Explanation

Such type of relationship is found in green algae and fungus. The fungus benefits from the algae because they produce food from sun light and the algae benefits from the filaments of fungus.

Question number: 49

MCQ▾

Question

What is the major source of acid rain?

Choices

Choice (4) Response
a.

NH3 and CH4

b.

HNO3 and H2SO4

c.

CO2 and SO2

d.

CO2 and CO

Answer

b.

Explanation

Chemical reaction occur in atmosphere-

shows given image in major source of acid rain

shows given image in major source of acid rain

image of acid rain sentence

Acid rain is caused by releases of sulfur dioxide and nitrogen oxide, which react with the water in the atmosphere to produce acids.

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