Waec Biology Past Questions and Answers

Question 406:

• WAEC 1995

Which of the following conditions is not necessary for photosynthesis to occur in plants?

A. There must be light
B. There must be xylem tissue used to conduct water
C. There must be chlorophyll to trap radiant energy
D. Carbondioxide must be present
E. Water must be present

Question 407:

• WAEC 1995

The distribution of organisms in a fresh - water habitat like a stream or pond is determined by the following
except

A. Rainfall
B. Temperature
C. PH of soil
D. Light penetration
E. Tidal movements

Question 408:

• WAEC 1995

Which of the following is characteristics of a swamp?

A. Vegetation with stratified arrangement
B. Mesophytes with broad leaves
C. The ground is flooded most of the time
D. Predominance of climbing plants
E. Many plants with tire resistant structures

Question 409:

• WAEC 1995

Very low annual rainfall, sparse vegetation, high day temperatures and cold nights are the characteristics
of the biome known as

A. Swamp
B. Tropical forest
C. Southern guinea savanna
D. Afro alpine
E. Desert

Question 410:

• WAEC 1995

Which of the following conclusions
cannot be drawn from the graphs?

A. Ion is taken up more rapidly at suitable temperature
B. Suitable oxygen concentration increases ion uptake
C. Ion uptake requires energy from aerobic respiration of sugar
D. Ion uptake occurs most rapidly in adequate supply of, respiratory substrate
E. The quantity of ions absorbed is inversely proportional to the quantity of carbohydrate (sugar) synthesized.