Blood group antigens (agglutinogens) are

Correct Answer: D

Rationale: Blood group antigens are present on RBC surfaces in fetal blood; they are inherited as dominant Mendelian traits, not recessive.

Correct Answer: A

Rationale: Lymph contains plasma proteins (e.g., albumin) and cells (lymphocytes); it absorbs fats, not amino acids, from the gut.

Correct Answer: A

Rationale: Hematocrit is measured by centrifugation; burns cause hemoconcentration, raising it.

Correct Answer: A

Rationale: Na+ loss reduces ECF volume,lowe ring CVP; renin increases to compensate.

Correct Answer: B

Rationale: Columnar epithelium consists of pillar-like cells with nuclei elongated. It's a lining of the stomach, intestine and gall bladder which helps in the absorption of water and digested food.