passwella.
Menu

JAMB Biology 2019 past questions and answers

3 questions. Try each one, then open the answer to check yourself and read the explanation.

Question 4

Reproduction in Animals

Use the diagram (stages of development of a toad): Which of the following is the correct order of the developmental stages?

Diagram for this question
  1. A.1 → 2 → 3 → 4 → 5
  2. B.5 → 1 → 3 → 2 → 4
  3. C.2 → 1 → 3 → 4 → 5
  4. D.5 → 3 → 2 → 1 → 4.
Show the answer and explanation

Answer: D (5 → 3 → 2 → 1 → 4.)

Explanation

Development starts with the eggs (5), then young tadpoles (3, 2), a larger tadpole (1) and finally the stage with legs (4).

Open this question

Question 26

Photosynthesis and Plant Nutrition

A green plant growing in a compost pit is feeding

  1. A.holozoically
  2. B.parasitically
  3. C.saprophytically
  4. D.holophytically.
Show the answer and explanation

Answer: D (holophytically.)

Explanation

A green plant has chlorophyll and makes its own food by photosynthesis, wherever it grows, so it feeds holophytically.

Open this question

Question 37

Animal Nutrition

Use the diagram (head of an insect): The structure labelled III represents the

Diagram for this question
  1. A.mandible
  2. B.palp
  3. C.proboscis
  4. D.labium
Show the answer and explanation

Answer: C (proboscis)

Explanation

The diagram is the head of a housefly; III is the long sucking proboscis with its spongy tip, and houseflies have no mandibles.

Open this question