Question 141:

• JAMB 1979

The one-seeded fuit in which the pericarp and the seed coat have become fused together is known as

A. Achene
B. Samara
C. Caryopsis
D. Legume
E. Drupe

Question 142:

• 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 143:

• 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 144:

• 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 145:

• 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