Option “4” is correct Haematopoiesis refers to the commitment and differentiation processes that lead to the formation of all blood cells from haematopoietic stem cells. In adults, haematopoiesis occurs mainly in the bone marrow.
252. ________ is a hormone that regulates the amount of glucose in the blood.
1. Glucogen
2. Thyroxine
3. Oxytocin
4. Insulin
Option “4” is correct Insulin is a hormone made by the pancreas that allows body to use sugar (glucose) from carbohydrates in the food that for energy or to store glucose for future use.
253. Who is known as the ‘Father of Green Revolution’?
1. G. Paul
2. Norman Borlaug
3. Van Neil
4. Dr. Mithchell
Option “2” is correct Norman Ernest Borlaug was an American agronomist and humanitarian who led initiatives worldwide that contributed to the extensive increases in agricultural production termed the Green Revolution. He is known as Father of Green Revolution.
254. The oxygen liberated during photosynthesis comes from –
1. Water
2. Carbon dioxide
3. Glucose
4. Chlorophyll
Option “1” is correct The oxygen liberated during photosynthesis comes from Water.
255. Term Vitamin was coined by –
1. Charles Levaran
2. Casimir Funk
3. Robert koch
4. Robert hooke
Option “2” is correct The term Vitamin was coined by Casimir Funk.
256. Nutrients are recycled in the atmosphere with the help of certain microorganisms referred to as –
1. Producers
2. Consumers
3. Decomposers
4. None of these
Option “3” is correct A decomposer is an organism that decomposes, or breaks down, organic material such as the remains of dead organisms. Decomposers include bacteria and fungi. Nutrients are recycled in the atmosphere with the help of them.
Option “2” is correct Chickenpox, also known as varicella, is a highly contagious disease caused by the initial infection with varicella zoster virus (VZV).
