Question 751:

• JAMB 1992

The essential structural difference between hydra and tapeworm is that while Hydra

A. Has tentacles, tapeworm is parasitic
B. Is diploblastic, tapeworm is triplobastic
C. Has a mouth, tapeworm feeds by suckers
D. Has mesoderm, tapeworm has mesogloea

Question 752:

• JAMB 1992

The flowering period of plants in a habitat is determined by the

A. Duration of sunlight
B. Intensity and duration of rainfall
C. Relative humidity of the atmosphere
D. Temperature of the habitat

Question 753:

• JAMB 1992

The structure labelled X is used by the organism in the same way as man uses his

A. Oesophagus
B. Trachea
C. Stomach
D. Intestine

Question 754:

• JAMB 1992

The structure labelled Y is the

A. Food vacuole
B. Nucleolous
C. Macronucleus
D. Contractile vacuole

Question 755:

• JAMB 1992

Which of the following insects undergoes incomplete metamorphosis?

A. Mosquito
B. Termite
C. Housefly
D. Moth