Waec Biology 2020 Past Questions and Answers

Question 41:

• WAEC 2020

Which of the following tissues does not provide support in flowering plants?

A. Collenchyma
B. Parenchyma
C. Xylem
D. Phloem

Question 42:

• WAEC 2020

The diagram is an illustration of an experimental set-up. Study it and answer the question;
The set-up directly measure



A. Transpiration of water by the shoot
B. Evaporation of water from the leaves
C. Absorption of water by the shoot
D. Loss of mineral salts from the leaves

Question 43:

• WAEC 2020

The diagram below is an illustration of an experimental set-up. Study it and answer the question below;

The set-up can measure comparatively the rae of

A. Evaporation from leaves on a single shoot under different experimental conditions
B. Salt uptake by shoots from different plants
C. Transpiration of a single shoot of a plant under different experimental conditions
D. Water uptake by roots of different plants

Question 44:

• WAEC 2020

The respiratory organ of a cockroach

A. Air sac
B. Trachea
C. Lung book
D. Lung

Question 45:

• WAEC 2020

The excretory product of some reptiles, birds and insects is

A. Urea
B. Urine
C. Ammonia
D. Uric acid