Waec Biology 1989 Past Questions and Answers

Question 61:

• WAEC 1989

Over-crowding in seedlings of different species is less serious than over-crowding involving one species
because different species may

A. Have different nutritional needs
B. Lack the same nutrient
C. Be active at the same time
D. Have similar tolerance
E. Need equal spacing

Question 62:

• WAEC 1989

The autonomic nervous system comprises

A. Sympathetic and parasympathetic systems
B. Cranial and sacral nerves
C. Brain and cranial nerves
D. Spinal cord and spinal nerves
E. Brain and spinal nerves

Question 63:

• WAEC 1989

The scientist who discovered the honey-comb structure of the cell was

A. Robert Hooke
B. Felix Dujardin
C. Mathias Schleiden
D. Theodore Schowann
E. Louis Pasteur

Question 64:

• WAEC 1989

Which of the following organelles are likely to be present in cells that are actively respiring and
hotosynthesizing?

A. Nucleoli and centrioles
B. Lysosomers and ribosomes
C. Endoplasmic reticulum and Golgi bodies
D. Chloroplasts and mitochondria
E. Food vacuoles and contractile vacuoles

Question 65:

• WAEC 1989

Which of the following is not true about a bacterial colony growing on an agar plate?

A. They are visible without the aid of the microscope
B. Bacterial cells found in one colony often belong to one species
C. Different colonies have different colours
D. Only one species of bacterial colony can grow on a culture at any time
E. Colonies growing on an agar plate under the same conditions must belong to one species