Vidaara.orgClass 8 · Mathematics
CodeVID-M8-WS
Endocrine System and Reproduction — Practice Worksheet
Name: ____________________
Roll No.: __________
Date: ____________
General Instructions
- All questions are compulsory.
- Choose the correct option (A, B, C or D) for each question.
- The answer key is at the end — try the paper first!
Section A — Multiple Choice (1 mark each)
35 × 1 = 35 marks
1.
Chemical messengers released by endocrine glands into the blood are called:
- A.Enzymes
- B.Hormones
- C.Vitamins
- D.Nerves
2.
Endocrine glands are called "ductless" because they release hormones:
- A.Through tubes
- B.Directly into the blood
- C.Into the gut
- D.Onto the skin
3.
The "master gland" that controls other endocrine glands is the:
- A.Thyroid
- B.Pituitary
- C.Adrenal
- D.Pancreas
4.
The hormone released during fear or danger ("fight-or-flight") is:
- A.Insulin
- B.Adrenaline
- C.Thyroxine
- D.Oestrogen
5.
Insulin and glucagon, which control blood glucose, are made by the:
- A.Thyroid
- B.Pancreas
- C.Pituitary
- D.Testes
6.
A system in which the body detects a change and acts to correct it is a:
- A.Feedback mechanism
- B.Reflex arc
- C.Blood group
- D.Synapse
7.
In negative feedback, the body's response to a change:
- A.Opposes the change
- B.Increases the change
- C.Has no effect
- D.Stops the heart
8.
When blood glucose is too high, the pancreas releases:
- A.Glucagon
- B.Insulin
- C.Adrenaline
- D.Thyroxine
9.
When blood glucose is too low, it is raised by the hormone:
- A.Insulin
- B.Glucagon
- C.Oestrogen
- D.Growth hormone
10.
A condition in which blood glucose stays too high due to insulin problems is:
- A.Goitre
- B.Diabetes
- C.Anaemia
- D.Scurvy
11.
The male gamete and female gamete are, respectively, the:
- A.Egg and sperm
- B.Sperm and egg
- C.Sperm and sperm
- D.Egg and egg
12.
Sperms and the hormone testosterone are produced by the:
- A.Ovaries
- B.Testes
- C.Uterus
- D.Kidneys
13.
In the male, sperms are carried from the testes by the:
- A.Fallopian tube
- B.Vas deferens
- C.Ureter
- D.Oviduct
14.
The female gonads that produce eggs and hormones are the:
- A.Testes
- B.Ovaries
- C.Uterus
- D.Bladder
15.
The organ in which a baby develops is the:
- A.Ovary
- B.Fallopian tube
- C.Uterus
- D.Urethra
16.
The menstrual cycle lasts, on average, about:
- A.7 days
- B.14 days
- C.28 days
- D.90 days
17.
The release of a mature egg from the ovary is called:
- A.Menstruation
- B.Ovulation
- C.Fertilisation
- D.Implantation
18.
During menstruation, what is shed from the body?
- A.A mature egg
- B.The thickened uterus lining
- C.A sperm
- D.The ovary
19.
A surge of which hormone triggers ovulation?
- A.Insulin
- B.LH (luteinising hormone)
- C.Adrenaline
- D.Thyroxine
20.
Which hormone helps build up the lining of the uterus?
- A.Oestrogen
- B.Glucagon
- C.Adrenaline
- D.FSH only
21.
Fertilisation is the fusion of a sperm with a(n):
- A.Zygote
- B.Egg (ovum)
- C.Embryo
- D.Foetus
22.
The single cell formed when a sperm joins an egg is the:
- A.Embryo
- B.Foetus
- C.Zygote
- D.Follicle
23.
In humans, fertilisation normally takes place in the:
- A.Uterus
- B.Fallopian tube
- C.Ovary
- D.Vagina
24.
The attachment of the embryo to the lining of the uterus is called:
- A.Ovulation
- B.Implantation
- C.Menstruation
- D.Fertilisation
25.
The organ that supplies the developing baby with food and oxygen is the:
- A.Placenta
- B.Ovary
- C.Kidney
- D.Liver
26.
The stage of life between childhood and adulthood is called:
- A.Infancy
- B.Adolescence
- C.Old age
- D.Embryo stage
27.
The physical changes that mark the start of adolescence are together called:
- A.Puberty
- B.Digestion
- C.Excretion
- D.Reflex
28.
Which of these is a secondary sexual character in girls?
- A.Deep voice
- B.Breast development
- C.Facial hair
- D.Larger feet only
29.
The changes of puberty are mainly brought about by:
- A.Digestive juices
- B.Sex hormones
- C.Bile
- D.Saliva
30.
Which is the healthiest way to deal with worries during adolescence?
- A.Keep them hidden always
- B.Talk to trusted adults
- C.Stop eating
- D.Avoid all sleep
31.
Reproductive health is best supported by:
- A.Skipping meals
- B.A balanced diet and good hygiene
- C.Avoiding all sleep
- D.Hiding all questions
32.
AIDS is caused by a virus called:
- A.HIV
- B.Goitre
- C.Insulin
- D.Bacteria only
33.
HIV/AIDS spreads through:
- A.Hugging and sharing food
- B.Ordinary daily contact
- C.Not through ordinary contact like handshakes or sharing food
- D.Studying together
34.
If a touch or situation makes you feel uncomfortable or scared, you should:
- A.Keep it secret
- B.Move away and tell a trusted adult
- C.Ignore it forever
- D.Blame yourself
35.
In India, the national child helpline number a child can call for help is:
- A.100
- B.1098
- C.1100
- D.555
Answer Key
Section A — Multiple Choice (1 mark each)
- (B) Hormones
- (B) Directly into the blood
- (B) Pituitary
- (B) Adrenaline
- (B) Pancreas
- (A) Feedback mechanism
- (A) Opposes the change
- (B) Insulin
- (B) Glucagon
- (B) Diabetes
- (B) Sperm and egg
- (B) Testes
- (B) Vas deferens
- (B) Ovaries
- (C) Uterus
- (C) 28 days
- (B) Ovulation
- (B) The thickened uterus lining
- (B) LH (luteinising hormone)
- (A) Oestrogen
- (B) Egg (ovum)
- (C) Zygote
- (B) Fallopian tube
- (B) Implantation
- (A) Placenta
- (B) Adolescence
- (A) Puberty
- (B) Breast development
- (B) Sex hormones
- (B) Talk to trusted adults
- (B) A balanced diet and good hygiene
- (A) HIV
- (C) Not through ordinary contact like handshakes or sharing food
- (B) Move away and tell a trusted adult
- (B) 1098
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