Waec Biology Past Questions and Answers

Question 1361:

• WAEC 2011

What will be the chromosome number of the hybrid of two varieties of a plant with 36 chromosomes in the endosperm cell?

A. 12
B. 24
C. 35
D. 48

Question 1362:

• WAEC 2011

Kreb’s cycle occurs in the

A. Mitochondria
B. Cytoplasm
C. Nucleus
D. Ribosomes

Question 1363:

• WAEC 2011

The process whereby electrons are emitted from chlorophyll and returned to it unchanged is known as

A. Non-cyclic phosphorylation
B. Photochemical reaction
C. Photophorylation
D. Cyclic photophorylatlion

Question 1364:

• WAEC 2011

Which of the following statements about photosynthesis is not true?

A. Plants can photosynthesize without an increase in dry weight
B. Carbon dioxide is absorbed by the leaves in bright light
C. Oxygen is produced during photosynthesis from the breakdown of water
D. Photosynthesis occurs in green plants

Question 1365:

• WAEC 2011

The removal of all the phloem tissues of the stem of a plant close to the root system for a long period of time is likely to

A. Provide more energy to the roots
B. Accumulate more starch in the roots
C. Cause the underground roots to develop buds
D. Cause the p ant to wither and die