The phenomenon where a single gene influences multiple phenotypic traits is called: MCQ with Answer and Explanation

Explanation:
Xerophytes (e.g., cactus, acacia) have adaptations like thick cuticle, sunken stomata, reduced leaves, and water-storing tissues to conserve water in arid habitats. Hydrophytes live in water, mesophytes in moderate conditions, halophytes in saline soils. Xerophytes minimize transpiration and maximize water uptake.

Explanation:
AB positive blood has both A and B antigens and the Rh antigen, so it lacks antibodies against A, B, or Rh. Hence, individuals with AB+ can receive red blood cells from any donor without agglutination. O negative is the universal donor. Compatibility depends on antigens on donor RBCs and antibodies in recipient plasma.

Explanation:
Somatostatin, also known as growth hormone-inhibiting hormone (GHIH), is a peptide hormone produced by the delta cells of the pancreatic islets, the hypothalamus, and various cells in the gastrointestinal tract. It acts as a powerful, universal inhibitor. It inhibits the release of growth hormone (GH) and thyroid-stimulating hormone (TSH) from the anterior pituitary. In the pancreas, it inhibits the secretion of both insulin and glucagon. In the gut, it inhibits the release of gastrin, secretin, and other GI hormones, slowing down digestion and absorption.