The release of ovum from the ovary is called: MCQ with Answer and Explanation

Explanation:
The vocal cords (folds) in the larynx vibrate as air passes, producing sound. Pitch is controlled by tension. Epiglottis prevents food entry, trachea is airway.

Explanation:
The placenta begins to form immediately after implantation of the blastocyst. By the end of the first trimester (around 12 weeks of gestation), the placenta is fully formed and takes over the primary role of hormone production (progesterone and estrogen) from the corpus luteum. It is fully functional in providing oxygen, nutrients, and waste removal for the developing fetus for the remainder of the pregnancy. It is not fully formed at conception, nor does it wait until the second or third trimester.

Explanation:
DNA fingerprinting analyzes unique patterns in an individual's DNA (VNTRs) and is widely used in forensics for identifying criminals or establishing paternity. Human insulin (Humulin) was the first genetically engineered therapeutic protein, produced in E. coli in 1982. Bt brinjal is genetically modified to express Bt toxin for resistance against specific insect pests (like the fruit and shoot borer), not herbicides. Thus, statements 1 and 2 are correct.