Waec Biology Past Questions and Answers

Question 631:

• WAEC 1999

(a) (i) Define the term metamorphosis.
(ii) Name the two types of metamorphosis that organisms undergo and mention two organisms that undergo each type.
(b) (i) State four economic importance of insects and name an example of each of the insects involved.
(ii) List four peculiar features of social insects.

Question 632:

• WAEC 2000

Amoeba obtains its oxygen requirements

A. From oxidising food substances
B. From air trapped in vacuoles
C. Through diffusion of air into its body
D. Through an air cavity in the ectoplasm

Question 633:

• WAEC 2000

Amoeba obtains its oxygen requirements

A. From oxidising food substances
B. From air trapped in vacuoles
C. Through diffusion of air into its body
D. Through an air cavity in the ectoplasm

Question 634:

• WAEC 2000

Which of the following best describes a colony of volvox?

A. Asexually reproduced cells held together in a mass, but independent of each other
B. Sexually reproduced cells held together in a mass, and dependent on each other
C. Single free-living acellular units irrespective of their parental origin
D. Several units of cells, held together by cytoplasmic strands and dependent on each other

Question 635:

• WAEC 2000

The hydra has two body layers of cells called

A. Ectodermis and enteron
B. Ectodemt and endoderm
C. Endodermis and dermis
D. Epidermis and dermis