i. decrease in sodium ion concentration in the plasma. ii. decrease in potassium ion concentration in the plasma. iii. decrease in the volume of blood.
Answer : Option CExplaination / Solution:
If decreased blood pressure is detected, the adrenal gland is stimulated by these stretch receptors to release aldosterone, which increases sodium reabsorption from the urine, sweat, and the gut. This causes increased osmolarity in the extracellular fluid, which will eventually return blood pressure toward normal.
Q4.Which group of chordates possesses sucking and circular mouth without jaws?
Answer : Option CExplaination / Solution:
The organism beloging to class Cyclostomes have a sucking and circular mouth without jaws.They are primitive vertebrates. The cyclostomes are marine or fresh-water vertebrates.
Answer : Option DExplaination / Solution:
The more abundant charge carriers are called majority carriers, which are primarily responsible for current transport in a piece of semiconductor. In n-type semiconductors they are electrons, while in p-type semiconductors they are holes.
Q7.Suppose we want to know the average changes in the price of a set of commodities in 2010 with respect to the prices of same set of commodities in 2008. In this case what will be the base year?
Answer : Option CExplaination / Solution: No Explaination.
Q8.The tissues that allow the penis to fill with blood and become erect is called
Answer : Option DExplaination / Solution:
Large pockets of erectile tissue in the penis allow it to fill with blood and become erect to increase in size and become turgid during copulation.
Answer : Option BExplaination / Solution:
The Gross Enrolment Ratio is a statistical measure of students enrolled in a specific level of education as a percentage of the population corresponding to that level of education. GER is used worldwide and also by the United Nations.