The 'Hormone Glucagon' is secreted by the alpha cells of the pancreas. Its primary effect on the liver is to: MCQ with Answer and Explanation

Explanation:
Xylem is a complex permanent tissue that conducts water and dissolved minerals from roots to the aerial parts. It consists of tracheids, vessels, xylem parenchyma, and fibers. Phloem transports organic solutes, collenchyma provides flexible support, epidermis protects.

Explanation:
Vitamin A (retinol) is crucial for maintaining healthy vision, particularly in dim light, as it is a component of the visual pigment rhodopsin. The B-complex vitamins (like B1, B2, B3, B5) act as coenzymes and are essential for various metabolic pathways, particularly the conversion of carbohydrates, fats, and proteins into usable energy. Vitamin K, not Vitamin C, is essential for the synthesis of blood clotting factors; Vitamin C is essential for collagen synthesis and immunity. Thus, statements 1 and 2 are correct.

Explanation:
Naja naja is the binomial name of the spectacled cobra, common in India. Vipera russellii is Russell's viper, Bungarus fasciatus is the banded krait, Ophiophagus hannah is the king cobra. Binomial nomenclature was introduced by Carolus Linnaeus to provide a universal naming system.