Consider statements about cell organelles: 1. Chloroplasts are found in all plant cells. 2. Vacuoles are larger in plant cells than animal cells. 3. Centrioles are present in higher plant cells. Which are correct? MCQ with Answer and Explanation

Explanation:
Azadirachta indica is the scientific name of neem, known for its medicinal and insecticidal properties. Ocimum sanctum is holy basil (tulsi), Ficus religiosa is the peepal tree, and Mangifera indica is mango. Neem belongs to the family Meliaceae. Its leaves, seeds, and oil are used in various traditional remedies and biopesticides.

Explanation:
Ergotism is caused by the fungus Claviceps purpurea, which infects the ovaries of rye and other grasses, replacing the seeds with hard, dark sclerotia (ergots). These sclerotia contain potent alkaloids (like ergotamine) that cause severe vasoconstriction and neurological symptoms in humans and animals consuming contaminated grain. Ustilago causes smut, and Puccinia causes rust.

Explanation:
Insulin activates glycogen synthase, promoting glycogenesis. Glucagon and epinephrine activate glycogen phosphorylase, promoting glycogenolysis.