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Subjects
Science CBSE
Class 8
Reaching the age of adolescence
Hormones and reproductive health

3. Sex chromosomes and endocrine glands

Exercise condition:

3 m.

Choose the best answer:

1. How many pairs of chromosomes are present in nucleus?

\(23\) pairs
\(44\) pairs
\(46\) pairs
\(22\) pairs

2. The sex chromosomes present in humans

both \(X\)
\(X\) and \(Z\)
\(Y\) and \(Z\)
\(X\) and \(Y\)

3. Master gland

pituitary
adrenal
parathyroid
thyroid

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