The scientific name of the common garden pea, extensively used by Mendel, is: MCQ with Answer and Explanation

Explanation:
The thymus is a lobulated lymphoid organ located in the upper part of the thoracic cavity, near the heart. It is most prominent and active during childhood and begins to atrophy (involute) after puberty. Its primary function is to provide a microenvironment for the differentiation, selection, and maturation of T-lymphocytes (T cells), which are crucial for cell-mediated immunity. The thymus also secretes hormones like thymosin, which aid in T-cell development.

Explanation:
The Glomerular Filtration Rate (GFR) is the volume of fluid filtered from the renal glomerular capillaries into the Bowman's capsule per unit time. In a healthy adult, the normal GFR is approximately 125 ml per minute, which amounts to about 180 liters per day. Almost all of this filtrate is reabsorbed, leaving only 1.5 liters of urine.

Explanation:
DNA contains adenine, guanine, cytosine, and thymine. RNA contains uracil instead of thymine. This is one of the key differences between DNA and RNA. Uracil pairs with adenine in RNA. The base pairing in DNA is A-T and G-C. In RNA, it is A-U and G-C. Uracil lacks the methyl group present in thymine.