Subject

Biology

Class

NEET Class 12

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 Multiple Choice QuestionsMultiple Choice Questions

1.

Proximal and distal convoluted tubules are parts of a

  • nephron

  • oviduct

  • vas deferens

  • caecum


2.

Heart sound dub is caused due to closing of

  • valve

  • tricuspid valve

  • semilunar valve

  • None of the above


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3.

Posterior pituitary gland

  • produces and store hormones

  • stores 6 trophic honnones

  • stores and releases ADH and oxytocin

  • release and store growth and thyroid stimulating hormone


C.

stores and releases ADH and oxytocin

Posterior pituitary gland is the back portion of the pituitary. It is a small gland in the head called the master gland. It does not synthesize any hormone but stores and releases two hormones ADH (Antidiuretic Hormone) and Oxytocin.

Antidiuretic hormone is released in response to a fall in the water content of blood plasma and leads to an increase in the permeability to water of the distal and collective tubules of the nephron in the kidney so that water is retained in the blood plasma.

Oxytocin causes contraction of the uterus during birth and the ejection of milk from the nipple.


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4.

The instrument used for measuring blood pressure is

  • electrocardiograph

  • X-rays

  • sphygmomanometer

  • electroencephalograph


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5.

Heart beats originates from

  • pace maker

  • cardiac muscles

  • left atrium

  • right ventricle


6.

Cranial nerve showing maximum branching is

  • trigeminal

  • vagus

  • optic

  • facial


7.

Gonadotrophins are secreted from

  • gonads

  • anterior pituitary

  • posterior pituitary

  • antidiuretic hormone


8.

Earthworms are economically important for man as these are used as

  • bait for catching fish

  • food of poultry

  • medicine for gout

  • All of the above


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9.

Which of the following is a part of pectoral girdle?

  • Ilium

  • Ischium

  • Acetabulum

  • Glenoid cavity


10.

Water vascular system is characteristic of

  • Protozoa

  • Porifera

  • Annelida

  • Echinodermata


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