Which of the following acts as thermoregulator?

A. Cerebrum
B. Cerebellum
C. Thalamus
D. Hypothalamus

Receptors for hearing come under heading of___________?

A. Chemical
B. Mechanical
C. Photo
D. Nociceptors

Microscopic gaps between the neuron endings are called__________?

A. Transmitters
B. Synapses
C. Pores
D. Nodes

Under resting membrane potentials:

A. Outer surface of neuron is more positive
B. Inner surface of neuron is more positive
C. Both of these surfaces are equally positive
D. None of these.

Reflex actions below the neck are under control of____________?

A. Brain
B. Spinal cord
C. Hypothalamus
D. None of these.

Which of the following is largest part of brain?

A. Cerebrum
B. Cerebellum
C. Medulla oblongata
D. Thalamus

Any change in the environment of an organism is called___________?

A. Stimulus
B. Variation
C. Response
D. Reaction

Hydra has___________?

A. Brain
B. Nerves
C. Neuron-cells
D. All of these

Co-ordination in man is brought about by___________?

A. Nervous system
B. Endocrine system
C. Both of these
D. None of these.

Which of the following transmits nerve impulse from receptors to central nervous system?

A. Sensory neuron
B. Motor neuron
C. Associative neuron
D. None of these.