- C.Tick (√) The Correct Option
- D.Answer The Following Questions in Brief
- E.Answer The Following Questions
- Value Based Question
- Something To Do
SOMETHING TO KNOW
A. Fill in the blanks :
1. Endocrine glands release hormones
into the blood stream.
2. larynx is also known as the voice box.
3. Acne and pimples are common in adolescence due to increased production of oil by the sebaceous glands.
4. Deficiency of vitamin D reduces the absorption of calcium by the body.
5. Thyroxine hormone is essential for metamorphosis to happen in a frog.
6. autosomes are chromosomes other than the sex chromosomes.
B. Match the following :
(1) Ovary - (e) Progesterone
(2) Pancreas - (d) Insulin
(3) Adrenals - (a) Adrenaline
(4) Testes - (b) Testosterone
(5) Thyroid - (c) Thyroxine
C. Tick (✓) the correct option :
1. The period of life, marked by rapid changes leading towards sexual maturity, is known as -
Ans) Puberty
2. The onset of menstruation, in a human female, is known as -
Ans) Menarche
3. The hormone, which controls the body's response to stress, is known as -
Ans) Adrenaline
4. Out of the following, the one that does not produce hormones, is the -
Ans) Sebaceous glands
5. The mineral, whose presence is essential for a tadpole to grow into a frog, is -
Ans) lodine
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