Jamb Biology 1979 Past Questions and Answers

Question 41:

• JAMB 1979

The major function of contractile vacuole in amoeba is

A. To secrete enzyme to digest food particles
B. To store excess food materials
C. To excrete nitrogenous waste
D. To absorb water from the surrounding
E. To collect and expel water in the cytoplasm

Question 42:

• JAMB 1979

Grasses grasshopper lizard snakes hawks. In the food chain, the organism which are the least in number are

A. Grasses
B. Grasshopper
C. Lizards
D. Snakes
E. Hawks

Question 43:

• JAMB 1979

Which of these is not true? grass in the above food chain

A. Trap all the sunlight
B. Trap a small percent of the sun energy
C. Are primary producers
D. Are eaten by primary consumers
E. Contains chlorophyll

Question 44:

• JAMB 1979

Insect show consideration powers of water conservation. This is due to the fact that

A. The chitinous cuticle is impregnated with tanned protein
B. Nitrogenous waste is eliminated as urea
C. Chitin is impermeable to water
D. The malpighian tubules are impermeable to water
E. The curticle is covered with wax

Question 45:

• JAMB 1979

Root hair have their origin from

A. Endodermis
B. Pericycle
C. Cortex
D. Epidermis
E. Xylem