The type of tissue that covers body surfaces and lines cavities is: MCQ with Answer and Explanation

Explanation:
A balanced diet contains all the essential macronutrients (carbohydrates, proteins, fats) and micronutrients (vitamins, minerals) in the correct proportions required for optimal health, growth, and maintenance. Malnutrition is a broad term that refers to deficiencies, excesses, or imbalances in a person's intake of energy and/or nutrients; it includes both undernutrition (wasting, stunting) and overnutrition (overweight, obesity). Water is an essential nutrient, crucial for hydration, transport, and all biochemical reactions. Thus, statements 1 and 3 are correct.

Explanation:
Monocots are less susceptible to Agrobacterium-mediated transformation using Ti plasmid. Therefore, direct gene transfer methods like particle bombardment (biolistics) are commonly used. The gene gun shoots DNA-coated gold or tungsten particles into plant cells. Ti plasmid works well for dicots. Bacteriophage and cosmids are for bacterial cloning.

Explanation:
Diphtheria is a highly contagious bacterial infection caused by Corynebacterium diphtheriae. It primarily affects the mucous membranes of the nose and throat, producing a thick gray pseudomembrane. The bacteria also produce a potent exotoxin that can damage the heart, kidneys, and nervous system. It is preventable by the DPT vaccine.