Biology 2020 Past Questions | WAEC

Study the following Biology past questions and answers for JAMBWAEC  NECO and ICAN. Get prepared with official past questions and answers for upcoming examinations.

1. The cell as the basic unit of life consists of 

  • A. cell wall and vacuole
  • B. nucleus and cell wall
  • C. cytoplasm and nucleus
  • D. cytoplasm and vacuole

2. 

Use the following Classes of Arthropoda to answer the question below

  1. Crustacea II. Insecta III. Arachinda IV. Chilopoda

Which members of the classes live mainly in an aquatic habitat?

  • A. I
  • B. II
  • C. III
  • D. IV

3.  Which of the classes is characterised by the possession of two pairs of antennae?

  • A. I
  • B. II
  • C. III
  • D. IV

4. The organism with spiral chloroplasts and nucleus suspended by cytoplasmic strands is

  • A. Volvox
  • B. Spirogyra
  • C. Paramecium
  • D. Euglena

5. The network of double membrane that conveys materials through the cytoplasm is the 

  • A. plasma membrane
  • B. nuclear membrane
  • C. mitochondrion
  • D. endoplasmic reticulum

6. ONION

The diagram below is an illustration of the longitudinal section of a plant organ. Study to answer the question below.

Food is stored in the part labeled 

  • A. I
  • B. II
  • C. III
  • D. IV

7.

ONION

The diagram below is an illustration of the longitudinal section of a plant organ. Study to answer the question below.

The plant is a 

  • A. stem tuber
  • B. bulb
  • C. stolon
  • D. runner

8.

ONION

The diagram below is an illustration of the longitudinal section of a plant organ. Study to answer the question below.

The part labeled I is the 

  • A. apical bud
  • B. scale leaf
  • C. adventitious root
  • D. fleshy leaf

9.  Which of the following materials is not a living semi-permeable membrane?

  • A. pig’s bladder
  • B. Unripe pawpaw fruit
  • C. Yam tuber
  • D. Sheet of cellophane

10. In an experiment, mould and yeast cells were transferred into an environment with low oxygen concentration. After a few days, the mould dies while the yeast cells did not. Which of the following statements best explains the following observation.

  • A. The yeast cells carried out photosynthesis while the mould did not
  • B. Photosynthesis does not take place in the absence of oxygen
  • C. Respiration can take place in yeast cells in the absence of oxygen
  • D. Respiration does not occur in the mould

11.  Which of the following tissues does not provide support in flowering plants?

  • A. Collenchyma
  • B. Parenchyma
  • C. Xylem
  • D. Phloem

12.  The diagram below is an illustration of an experimental set-up. Study it and answer the question below;

SET

The set-up directly measure 

  • A. transpiration of water by the shoot
  • B. evaporation of water from the leaves
  • C. absorption of water by the shoot
  • D. loss of mineral salts from the leaves

13. The set-up can measure comparatively the rate of 

  • A. evaporation from leaves on a single shoot under different experimental conditions
  • B. salt uptake by shoots from different plants
  • C. transpiration of a single shoot of a plant under different experimental conditions
  • D. water uptake by roots of different plants

14.  The respiratory organ of a cockroach

  • A. air sac
  • B. trachea
  • C. lung book
  • D. lung

15.  The excretory product of some reptiles, birds and insects is

  • A. urea
  • B. urine
  • C. ammonia
  • D. uric acid

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