CIE Biology Paper-2: Specimen Questions with Answers 7 - 10 of 103

Question number: 7

MCQ▾

Question

Dark reaction of photosynthesis occur in.

Choices

Choice (4) Response

a.

Thylakoids

b.

Granum

c.

Stroma

d.

All of the above

Answer

c.

Explanation

Dark reactions or Calvin Benison cycle make use of these organic energy molecules (ATP and NADPH). It occurs in the stroma part of the chloroplast. ATP provides the energy, while NADPH provides the electrons required to fix the CO2 (carbon dioxide) into carbohydrates.

Question number: 8

MCQ▾

Question

the study of organism within the environment is known as-

Choices

Choice (4) Response

a.

Zoology

b.

Biology

c.

Ecosystem

d.

Ecology

Answer

d.

Explanation

Ecology is the scientific study of interactions among organisms and their environment. It is an interdisciplinary field that contains biology and Earth science. Ecology includes the study of interactions organisms have with each other, other organisms, and with abiotic components of the environment.

Question number: 9

MCQ▾

Question

Which part is known as left ventricle?

Figure shows structure of heart

Figure Shows Structure of Heart

Above figure shows different parts of heart

Choices

Choice (4) Response

a.

C

b.

D

c.

A

d.

B

Answer

d.

Explanation

B portion is left ventricle. The left ventricle is one of four chambers of the heart. It is located in the bottom left portion of the heart below the left atrium, separated by the mitral valve.

Question number: 10

MCQ▾

Question

Which part is known as primary root?

Figure shows structure of root

Figure Shows Structure of Root

Above figure is showing structure of root with its different parts

Choices

Choice (4) Response

a.

Part D

b.

Part B

c.

Part C

d.

Part A

Answer

d.

Explanation

Part A is primary root. It is the thickest. It grows downwards and then divided into its sub parts.