Multiple Choice Questions

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In motor neuron the impulse following in which direction?

  • In two direction

  • In one drection

  • In all direction

  • None of the above


A.

In two direction

Motor neurons are efferent neurons and are located in CNS. The impulse acts in two direction. It carry impulses from the brain and spinal cord to muscles or glands. hen a stimulus is received by a sensory neuron, the impulse (or message) is carried through fibrous extensions called dendrites to the cell body.


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The pH of protolasm is

  • 6.0

  • 6.8

  • 7.8

  • 8.2


From acrosome, which secretes

  • hyaluronic acid

  • hyaluronidase

  • TSH

  • fertilizin


Haemoglobin in earthworm is present in

  • RBC

  • protoplasm

  • coelomic fluid

  • plasma


Muscular movements of alimentarey canal are known as

  • peristalsis

  • diastole

  • systole

  • muscles contraction


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Final excretion in urine of which substance is

  • amino acid

  • urea

  • glucose and glycogen

  • uric acid


First heart sound is produced during closure of

  • auriculo-ventricular valves

  • eustachian valve

  • sinus valve

  • seminular valves


Which gland is worked opposite to pressure?

  • Adrenal

  • parathyroid

  • Pineal

  • Thyroid


Nucleated RBCs are present in which

  • Rabbit

  • Camel and llama

  • Embryo of human

  • Both (a) and (b)


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Fertilization in earthworm is

  • cross fertilization

  • combined fertilization

  • self-fertilization

  • All of the above