alleryChanges in the appearance of boys at puberty are brought about by:
AThyroxine
BTryptophan
CThiamine
DTestosterone
Answer & Solution
Correct answer: D. Testosterone
1. The testes secrete a hormone as well as making sperms.
2. Testosterone regulates the formation of sperms.
3. It also brings about the changes in appearance seen in boys at puberty.
_Source: syllabus Science, Ch 8 'How do Organisms Reproduce?'_
Keep practising Life Processes & Human Physiology
Browse all Life Processes & Human Physiology questions for ICSE Class 10, or explore more Biology topics.
Related questions
Spot the false statementMatch each part to its jobWhich mode of reproductionAfter fertilisation the ovule of a flower becomes the:If the egg is not fertilised, the thickened uterine lining is shed in:Which organism divides into many daughter cells by multiple fission?Bacteria and protozoa usually split during cell division into:The swollen bottom part of the pistil is the: