Consider the following statements about biodiversity: 1. Biodiversity includes genetic, species, and ecosystem diversity. 2. Hotspots are regions with high endemism and habitat loss. 3. The Western Ghats is a biodiversity hotspot. Which of the above is/are correct? MCQ with Answer and Explanation

Explanation:
Vitamins A, D, E, and K are fat-soluble, stored in body fats and liver. Vitamin K is essential for blood clotting (synthesis of prothrombin). Vitamin B complex and vitamin C are water-soluble, excreted in urine and not stored extensively. Fat-soluble vitamins require dietary fat for absorption. Excess of fat-soluble vitamins can cause toxicity (hypervitaminosis).

Explanation:
The aorta is the main and largest artery originating from the left ventricle, distributing oxygenated blood to all parts of the body through its branches. The pulmonary artery carries deoxygenated blood to lungs. Coronary arteries supply the heart muscle, carotid arteries supply the brain. The aorta has a diameter of about 2-3 cm in adults.

Explanation:
Acetylcholinesterase degrades acetylcholine into acetate and choline, terminating the synaptic signal. Choline acetyltransferase synthesizes ACh, MAO and COMT degrade monoamines.