WAEC Biology Past Questions & Answers - Page 33

161.

The position occupied by an organism in the food chain is the

A.

energy level

B.

niche

C.

trophic level

D.

biomass

Correct answer is C

No explanation has been provided for this answer.

162.

Soil with the finest texture is

A.

silt

B.

clay

C.

sand

D.

gravel

Correct answer is B

The soil with the finest texture is clay soil, while the soil with the coarsest texture is sand.

163.

The diagram below is an illustration of an ecological instrument. Study it an answer the question below.

When the instrument is in use, it is usually? 

A.

placed slightly above soil level

B.

placed on a table

C.

suspended in air

D.

suspended to moving water

Correct answer is A

No explanation has been provided for this answer.

164.

The diagram below illustrates an ecological instrument. Study it and answer the question below.

A disadvantage of the abiotic factor measured by the instrument is that it

A.

is an agent of pollination

B.

is necessary for germination

C.

leads to flooding when in excess

D.

is used for irrigation

Correct answer is C

  •  The rain gauge is an instrument used to collect and measure precipitation (falling water).
  • High level of rain can lead to flooding.

165.

The table below shows the number of some organisms in habitats W and Y. Study it to answer the question below:

 

Organism                 Number in the habitat
   habitat W habitat Y
Plankton  126 0
Antelope 0 51
Water flea 10 0
Tilapia 23 0
Lion 0 6
Frog 6 0
Grass 0 250

The number of lions and antelopes in habitat Y shows that the lion 

A.

is the prey while the antelope is the predator

B.

is the predator while the antelope is the prey

C.

and the antelope are preys to each other

D.

and the antelopes are predators

Correct answer is B

No explanation has been provided for this answer.