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Q 1.
The production of testosterone and estrogen hormone are controlled by another hormone secreted by?
Ans.
Pituitary gland.
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Q 2.
How many sex chromosome are present in nuclei of human cells?
Ans.
2.
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Q 3.
Which endocrine gland produces insulin hormones?
Ans.
Pancreas.
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Q 4.
Male sex hormone testosterone is secreted by?
Ans.
Testes.
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Q 5.
Female sex hormone estrogen is secreted by?
Ans.
Ovaries.
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Q 6.
At the age of 40 -45, the menstruation cycle stops is known as?
Ans.
Menopause.
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Q 7.
The first time menstrual flow begins at puberty is known as?
Ans.
Menarche.
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Q 8.
What percentage of full height, a boy of 9 years of age gains?
Ans.
75%.
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Q 9.
How many numbers of chromosome have every human being have?
Ans.
23.
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Q 10.
The period of life, when the body undergoes changes leading to reproductive maturity is called?
Ans.
Adolescence.
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Q 11.
Which hormone is produced by thyroid gland?
Ans.
Thyroxine hormone.
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Q 12.
Which endocrine glands secrete hormones Which maintain the correct salt balance in the blood?
Ans.
Adrenal hormone.
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Q 13.
How many sets of chromosome does the gamete have?
Ans.
Only 1.
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Q 14.
Which hormone helps the body to adjust to stress when one is very angry, embarrassed or worried?
Ans.
Adrenalin hormone.
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Q 15.
A female has two X chromosomes while a male has?
Ans.
One X and One Y chromosome.
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Q 16.
Which hormone controls metamorphosis process in frogs?
Ans.
Thyroxin hormone.
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Q 17.
Which disease is caused by the deficiency of iron?
Ans.
Anemia.
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Q 18.
Deficiency if which elements cause formation of thyroxine hormone reduces?
Ans.
Iodine.
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Q 19.
Which endocrine gland gives order, through its hormone to thyroid and adrenals for secretion of their hormone?
Ans.
Pituitary gland.
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Q 20.
Examples of iron rich food?
Ans.
Leafy vegetables, Jaggery and Meat.
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