The botanical name of neem is: MCQ with Answer and Explanation

Explanation:
Golden Rice is a transgenic variety of rice (Oryza sativa) engineered to produce beta-carotene, a precursor of Vitamin A, in the edible endosperm. The beta-carotene gives the rice grains a characteristic golden-yellow color. It was developed to address Vitamin A deficiency (VAD), a major public health issue in developing countries that causes blindness and increases susceptibility to infectious diseases in children.

Explanation:
The placenta acts as a temporary endocrine gland, secreting hCG (which maintains the corpus luteum), hPL (which alters maternal metabolism for fetal growth), and high levels of estrogen and progesterone (which maintain the uterine lining and suppress further ovulation). Prolactin, however, is primarily secreted by the anterior pituitary gland, although its levels rise significantly during pregnancy to prepare the mammary glands for lactation.

Explanation:
Filippo Pacini first observed Vibrio cholerae in 1854, but Robert Koch later independently identified it and demonstrated its role. Koch is often credited, but Pacini's discovery was earlier. John Snow linked cholera to water.