Question 4 :
Assertion : Closed circulatory system is more effective than open type.<br>Reason : The closed circulatory system considerably enhances the speed, precision and efficiency of circulation.

Question 8 :
Which of the following statements is the characteristics of human cornea?

Question 13 :
In the renal tubules the permeability of the distal convoluted tubule and collecting duct to water is controlled by

Question 16 :
Which of the following salivary gland is absent in human beings?

Question 17 :
The striations that give skeletal muscle its characteristic striped appearance are produced by

Question 18 :
The amount of light that falls on retina is regulated by

Question 19 :
<p>The hormones that initiates ejection of milk, stimulates milk production and growth of ovarian follicles are respectively known as</p>

Question 20 :
The immediate cause of induction of ovulation in human female is the large plasma surge of

Question 23 :
The label X in the given figure of an act in filament represents<br /><img style='object-fit:contain' src="https://s3.ap-south-1.amazonaws.com/me-p/5f6d8bd316d7e6154e458bd6.jpg" />

Question 25 :
{tex}\mathbf{Assertion}{/tex} : Circular smooth muscles of iris contract when bright light falls on the eye.<br>{tex}\mathbf{Reason}{/tex} : Pupil gets constricted by the contraction of circular smooth muscles of iris.

Question 32 :
Which hormones do stimulate the production of pancreatic juice and bicarbonate?

Question 34 :
Good vision depends on adequate intake of carotene rich food. Select the best option from the following statements.<br>(1) Vitamin A derivatives are formed from carotene.<br>(2) The photopigments are embedded in the membrane discs of the inner segment.<br>(3) Retinal is a derivative of vitamin A.<br>(4) Retinal is a light absorbing pert of all the visual photopigments.

Question 35 :
Maximum amount of oxygen is exchanged from the blood in the ...............

Question 38 :
Which one of the following vitamins can be synthesized by bacteria inside the gut?

Question 39 :
One myosin filament in the myofibril of skeletal muscle fibres is surrounded by how actin filaments-

Question 40 :
What happens to the food when it enters from oesophagus to stomach?

Question 41 :
<p> <font face="Cambria Math, serif"><font>Sympathetic nerve accelerates heart beat due to</font></font></p>

Question 43 :
<p> <font face="Cambria Math, serif"><font>The one way or unidirectional transmission of nerve impulse in nerve cells is due to the presence of</font></font></p>

Question 44 :
<p> <font face="Cambria Math, serif">In the glomerulus of the nephron, the afferent arteriole is</font></p>

Question 46 :
<p> <font face="Cambria Math, serif">Bile is composed of bile salts and bile pigments which are</font></p>

Question 47 :
Which one of the following is the correct description of certain part of a normal human skeleton?

Question 48 :
<b>Assertion (A)</b>: Mammals have developed a complex respiratory system. <br><b>Reason (R)</b>: Mammalian skin is impermeable to gases.

Question 49 :
<p> <font face="Cambria Math, serif">Standing on tip toe is an example of</font></p>

Question 50 :
<p> <font face="Cambria Math, serif">Small finger-like projection, which produce numerous microscopic projections are supplied with a network of</font></p>