NCERT class 8 Chapter 10 Exam Questions & Answers 2024/2025
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NCERT class 8 Chapter 10
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NCERT Class 8 Chapter 10
NCERT class 8 Chapter 10 Exam Questions & Answers 2024/2025
What is the term used for chemical secretions of endocrine glands responsible for changes taking place in the body? - ANSWERSThe chemical substance secreted by the endocrine glands is called Hormones. Hormones are responsible for the ...
NCERT class 8 Chapter 10 Exam Questions & Answers 2024/2025
What is the term used for chemical secretions of endocrine glands responsible for changes taking place in the body? - ANSWERSThe chemical substance secreted by the endocrine glands is called Hormones. Hormones are responsible for the changes taking place in the body.
Define adolescence. - ANSWERSThe time period which comes between the beginning of adulthood and puberty is called Adolescence. In this time period, the body undergoes different changes alongside reproductive maturity. It starts somewhat at the age of 11 and ends at the age of 18 or19. This period of adolescence may differ from person to person.
What is menstruation? - ANSWERSThe process of shedding of the uterine lining on a regular monthly basis is called menstruation. It starts at puberty and in the reproductive cycle of the female body. The uterus prepares itself to receive a fertilized egg on every month. Due to this the inner lining of the uterus
become thick and is supplied with blood to nourish the embryo. If the egg is not fertilized, then the lining of the uterus breaks down and get released in the form of blood through the vagina. The time period for this is about 2 to 8 days every month. This monthly cycle is known as the menstrual cycle.
List changes in the body that take place at puberty - ANSWERSThe changes that take place at the time of puberty are as follows:
a) The height and weight of the body will suddenly increase
b) The hair seems to appear in the area such as legs, hands, face and underarms
c) In female, the enlargement of the ovary takes place and starts producing matured eggs and on the other hand in males, the testis grows and starts producing sperms
d) In males, the shoulder broadens and chest becomes widen, whereas in females the region below the waist becomes wider.
e) The acne seems to appear because of the excessive secretion of the oil from the skin.
f) In boys, the larynx becomes prominent under the influence of hormones, the vocal cord becomes longer and thicker resulting in hoarse voice.
List harmones screted by Following Endocrine Glands
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