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Solved O Level Biology MCQs With Answers
Q.1: Which of the following has no central nervous system?
- Hydra
- Man
- Planaria
- Cockroach
A
Q.2: Maximum speed of nerve impulse transmission is——?
- 100 m/sec
- 110 m/sec
- 120m/sec
- 130 m/sec.
C
Q.3: Which of the following are responsible for the detection of changes in environment?
- Receptors
- Neurons
- Effectors
- All of these
A
Q.4: Any change in the environment of an organism is called——?
- Stimulus
- Variation
- Response
- Reaction
A
Q.5: Co-ordination results in——-?
- Regulation of body functions
- Organization of body functions
- Integration of body functions
- All of these
D
Q.6: Which of the followings are effectors——-?
- Muscles
- Glands
- Sensory organs
- Both ‘a’ And ‘b’
D
Q.7: Hydra has——?
- Brain
- Nerves
- Neuron-cells
- All of these
C
Q.8: Co-ordination in man is brought about by——?
- Nervous system
- Endocrine system
- Both of these
- none of these.
C
Q.9: Which of the followings is missing from the nervous system of planaria——-?
- Ganglia
- Longitudinal nerves
- Lateral nerves
- none of these
D
Q.10: Which of the following transmits nerve impulse from receptors to central nervous system?
- Sensory neuron
- Motor neuron
- Associative neuron
- none of these.
A