1990 WAEC SSCE Biology Past Questions

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1990

Specimens I and J are cross-sections of two plants whose cut ends were dipped in red ink or eosin (red dye) for at least 6 hours (a) Observe specimen I with the hand lens provided. Record your observation about the colou…

1990

(a) ldentify specimens E, F, G and H without reason (b) Name one excretory organ found in each o specimens E, F, G and H (c) (i) State the habitats of specimens E and H (i) Examine the limbs of specimen H. List two ways…

1990

Study specimens A,B, C and D carefully (a) ldentify specimens A and B without reason (b) Name the organism responsible for the damage observed on specimens A and B (c) List two ways by which each of specimens A and B can…

1990

The graph below illustrates the changes in the body temperature of two animal A and B at different environmental temperatures. Study the graph carefully and use it to answer questions (a) to (c) (a) From the graph of the…

1990

State two adaptations of Rhizopus to saprophytic mode of nutrition.

1990

List three factors that can affect population growth.

1990

List two diseases that may be spread as a result of poor irrigation system.

1990

6. Mention the process by which food can be synthesized in an ecosystem where tnere is no sunlight.

1990

5. (a) Name the parts labelled I - IV(b) Which number indicates a part of the peripheral nervous system?

1990

4. Name two organisms that reproduce by budding

1990

3. (a) Name the parts labelled I - IV(b) In which of the labelled parts is food stored?

1990

2. (a) Name two supporting tissues found in plants (b) Give one function of the Golgi body in the cell.

1990

1. (a) List three features which are essential for cross-pollination to take place (b) State three characteristics

1990

(a) Explain briefly how the process of meiotic division contributes to variation in a population(b) State Mendel's first and second laws of inheritance.(c) A pure breeding brown coloured rat BB was crossed with a pure br…

1990

(a) Describe the process of succession in an abandoned farm land.(b) List seven ways by which micro-organisms can -be controlled to maintain good health.

1990

(a) (i) Give two reasons why termites are described as social insects. (ii) Name four castes found in the termite nest, stating one of each castes.(b) Describe five behavioural adaptations of termites which enable them t…

1990

(a) Describe briefly the process involved in the breakdown of glucose in the cell of living organisms to produce energy (AT P)(b) State two conditions under which glycogen can be converted to glucose to produce energy.(c…

1990

The structure in the cell that controls the movement of substances in and out of the cell is the

1990

Most of the energy in the cell is produced in the

1990

Which of the following structures controls the activities of the living cell?

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