Consider statements about human physiology: 1. The liver produces bile. 2. The pancreas produces insulin. 3. The gall bladder produces digestive enzymes. Which are correct? MCQ with Answer and Explanation

Explanation:
Gymnosperms are seed-producing plants where the ovules are not enclosed in an ovary; hence, the seeds are naked. They are predominantly perennial, evergreen, woody trees like pines and cedars. Double fertilization and the formation of triploid endosperm are unique characteristics of angiosperms, not gymnosperms. Thus, statements 1 and 2 are correct.

Explanation:
A biological species is defined as a group of potentially interbreeding natural populations that are reproductively isolated from other such groups and produce fertile offspring. Physical similarity or shared habitat does not guarantee species status, as reproductive isolation is the key criterion.

Explanation:
Zinc is a micronutrient (trace mineral) required in small amounts for enzyme function, immune response, and wound healing. Sodium, potassium, and phosphorus are macrominerals.