Waec Biology 2020 Past Questions and Answers

Question 31:

• WAEC 2020

The diagram below is an illustration of a part of a flower. Study it and answer the question below.

The part labeled II is the

A. Unfused stigma
B. Fused style
C. Fused ovaries
D. Unfused anther

Question 32:

• WAEC 2020

The reagent used in testing for carbon (IV) oxide is

A. Copper sulphate solution
B. Lime water
C. Hydrochloric acid
D. Sodium hydroxide solution

Question 33:

• WAEC 2020

Oxygen comes out of the stomata during photosynthesis through the process known as

A. Diffusion
B. Transpiration pull
C. Osmosis
D. Active transport

Question 34:

• WAEC 2020

The first stable product of photosynthesis is

A. Starch
B. Fructose
C. Glucose
D. Sucrose

Question 35:

• WAEC 2020

An example of a trace elements is

A. Potassium
B. Calcium
C. Magnesium
D. Copper