The normal Glomerular Filtration Rate (GFR) in a healthy adult is approximately: MCQ with Answer and Explanation

Explanation:
Simple permanent tissues (parenchyma, collenchyma, sclerenchyma) consist of a single cell type. Meristematic tissues are dividing and have thin walls; xylem/phloem are complex; epidermis is dermal.

Explanation:
The bottleneck effect is a form of genetic drift that occurs when a population's size is drastically reduced for at least one generation due to a severe environmental event (like a natural disaster, disease, or overhunting). The surviving population is a random, small sample of the original, and its gene pool may not represent the original population's genetic diversity. This leads to a significant loss of genetic variation, making the population more vulnerable to future changes.

Explanation:
Blood group O has neither A nor B antigens on the red blood cells, but has both anti-A and anti-B antibodies in plasma. It is the universal donor for red cells. Group AB has both antigens, A has A antigen, B has B antigen.