The hygrometer is used for measuring
Relative humidity
Specific gravity
Rainfall
Salinity
Correct answer is A
A hygrometer is a weather instrument used to measure the amount of humidity in the atmosphere. There are two main types of hygrometers: a dry and wet bulb psychrometer and a mechanical hygrometer.
Humidity is the measure of the amount of moisture in the air. A psychrometer is an example of a hygrometer.
Examples of animals with mammary glands include the following except
Cow
Goat
Pig
Hen
Correct answer is D
Hens do not have mammary glands.
The hormones secreted by the pancreas serves to
Facilitate the development of facial hairs
Raise the level of calcium in the blood
Lower blood glucose level
Make the body react to emergencies
Correct answer is C
Insulin and glucagon are hormones secreted by islet cells within the pancreas. They are both secreted in response to blood sugar levels.
Insulin helps control blood glucose levels.
Physiological adaptation to very dry conditions in animals demonstrates
Xeromorphism
Hibernation
Aestivation
Rejuvenation
Correct answer is C
Aestivation or æstivation is a state of animal dormancy, similar to hibernation, although taking place in the summer rather than the winter. Aestivation is characterized by inactivity and a lowered metabolic rate that is entered in response to high temperatures and arid conditions.
What would happen if solution Y is more concentrated than solution X in fig 2
The level of X would rise, Y would fall
The level of X would rise, Y would rise
The level of X and Y stands the same
The level of Y would rise, X would fall
Correct answer is D
Osmosis is the spontaneous net movement of solvent molecules through a selectively permeable membrane into a region of higher solute concentration, in the direction that tends to equalize the solute concentrations on the two sides. Therefore, the level of Y (region of higher concentration) would rise, X (region of lower concentration) would fall to equalize the solute concentrations on both sides.
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