Assertion (A): Gymnosperms do not produce fruits. Reason (R): Their seeds are not enclosed within an ovary. MCQ with Answer and Explanation

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.

Explanation:
Adrenocorticotropic hormone (ACTH), secreted by the anterior pituitary, stimulates the adrenal cortex to produce and release glucocorticoids like cortisol, which regulate metabolism and stress response. TSH stimulates the thyroid, FSH stimulates gonads, and prolactin stimulates milk production. ACTH is part of the HPA axis.

Explanation:
Lycopene is a red carotenoid pigment that accumulates in ripe tomatoes and watermelon. Beta-carotene is orange, chlorophyll green, anthocyanin purple/red in some plants.