The organ that secretes the hormone atrial natriuretic peptide (ANP) is the: MCQ with Answer and Explanation

Explanation:
A stroke (cerebrovascular accident) occurs when blood supply to part of the brain is interrupted, causing tissue death. Myocardial infarction is heart attack, aneurysm is vessel ballooning, embolism is blockage by a traveling clot.

Explanation:
Lysozyme, an enzyme found in tears, saliva, and egg white, hydrolyzes the β-1,4-glycosidic bond between N-acetylmuramic acid and N-acetylglucosamine in peptidoglycan, weakening the bacterial cell wall and causing lysis. It is part of innate immunity. Penicillin inhibits peptidoglycan synthesis.

Explanation:
Apical meristems at root and shoot tips undergo cell division, causing primary growth (increase in length). Lateral meristems increase girth.