Biology
Assertion. Efferent arteriole is wider than the afferent arteriole.
Reason. The difference in the size of the diameter of these arterioles creates a high pressure known as hydrostatic pressure. This pressure helps in the process of ultrafiltration through the glomerulus.
- Both A and R are True
- Both A and R are False
- A is True and R is False.
- A is False and R is True.
Answer
A is False and R is True
Explanation
Efferent arteriole is narrower than the afferent arteriole. The difference in the size of the diameter of these arterioles creates a high pressure known as hydrostatic pressure. This pressure helps in the process of ultrafiltration through the glomerulus.
Related Questions
Assertion. Kidneys eliminate urea and water only during excretion.
Reason. Urea is the most poisonous, nitrogenous waste of the body, so it must be excreted out as early as possible.
- Both A and R are True
- Both A and R are False
- A is True and R is False.
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Assertion. Renal artery carries deoxygenated blood full of nitrogenous wastes.
Reason. Most of the arteries carry oxygenated blood, but there are exceptions.
- Both A and R are True
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- A is False and R is True.
Assertion. Haematuria is the condition in which the blood passes with urine due to some infection in the urinary tract, kidney stones or tumour.
Reason. An excessive number of RBCs and haemoglobin is produced in the bone marrow. So these are excreted out through the urine.
- Both A and R are True
- Both A and R are False
- A is True and R is False.
- A is False and R is True.
Assertion. Effectors are the part of our body which, on receiving stimulus, set up waves of impulses towards the central nervous system.
Reason. The specialized epithelial cells of certain organs are capable of receiving stimuli which can be light, sound, heat, pain, hunger, etc.
- Both A and R are True
- Both A and R are False
- A is True and R is False.
- A is False and R is True.