Assertion (A): Insectivorous plants capture insects. Reason (R): They grow in nitrogen-rich soil. MCQ with Answer and Explanation

Explanation:
ADH and oxytocin are synthesized in the hypothalamus and stored/released from the posterior pituitary. Growth hormone and prolactin are anterior pituitary hormones.

Explanation:
The liver is the largest internal organ and gland, weighing about 1.5 kg in an adult. It performs over 500 functions, including bile production, detoxification, metabolism of carbohydrates, lipids, and proteins, and synthesis of plasma proteins. The pancreas and thyroid are smaller glands, the spleen is not a gland.

Explanation:
Agarose gel electrophoresis separates DNA fragments by size as they move through the gel under an electric field; smaller fragments migrate faster. DNA is stained with ethidium bromide and visualized under UV light. PCR amplifies DNA, centrifugation separates by density, microscopy provides magnified images. Gel electrophoresis is essential in molecular biology and forensics.