Q1 MCQ Drill: 2020 Life Sciences P1 (2020 NSC October/November National Examination)

Life Sciences Past Paper Question 1 Drill Level 1: Knowledge & Recall

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9 multiple-choice questions taken verbatim from Section A of the official 2020 NSC October/November National Examination Life Sciences Paper 1, auto-marked against the official marking guideline. Questions that rely on diagrams or graphs are excluded - see the full paper for those.

Question 1 of 9 2 Marks

Which part controls the amount of light entering the eye?

A. Cornea

B. Iris

C. Choroid

D. Lens

Question 2 of 9 2 Marks

Which ONE of the following refers to an aquifer?

A. An increase in the temperature of water bodies as a result of water from industries

B. Planting of the same crop on the same area repeatedly

C. An underground permeable rock saturated with water

D. The release of water with chemicals from mines

Question 3 of 9 2 Marks

The structure in the amniotic egg that removes waste products:

A. Yolk sac

B. Chorion

C. Amnion

D. Allantois

Question 4 of 9 2 Marks

Which ONE of the following is CORRECT with regard to astigmatism?

A. Light cannot pass through the cornea

B. Light cannot pass through the lens

C. Refraction of light rays by the cornea is uneven

D. The lens cannot become more rounded

Question 5 of 9 2 Marks

Which structures secrete progesterone during pregnancy?

A. Adrenal gland and corpus luteum

B. Corpus luteum and placenta

C. Thyroid gland and Graafian follicle

D. Pituitary gland and Graafian follicle

Question 6 of 9 2 Marks

Which ONE of the following shows the correct sequence of an impulse from the receptor in a simple reflex arc?

A. Sensory neuron through the dorsal root ✓ motor neuron through the ventral root ✓ effector

B. Motor neuron through the dorsal root ✓ sensory neuron through the ventral root ✓ effector

C. Sensory neuron through the dorsal root ✓ effector ✓ motor neuron through the ventral root

D. Effector ✓ interneuron through the dorsal root ✓ motor neuron through the ventral root

Question 7 of 9 2 Marks

Which ONE of the following would be a disadvantage when a biological method is used to control alien plant invasion?

A. Able to control alien plants without the use of harmful chemicals

B. Some part of the alien plant may be left to regrow when mechanically removed

C. The species introduced might be alien in the area and outcompete the indigenous species

D. Chemicals might affect the indigenous plants in the area

Question 8 of 9 2 Marks

Which ONE of the following is a consequence of the destruction of wetlands?

A. Increased biodiversity

B. Decreased water availability

C. Decreased global warming

D. Increased water quality

Question 9 of 9 2 Marks

Nocturnal animals have the ability to see clearly in the dark. They have …

A. bigger eyes.

B. more rods in the retina.

C. more cones in the retina.

D. no blind spot.

Q1 MCQ Drill: 2020 Life Sciences P1 (2020 NSC October/November National Examination)

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