C.P.Goenka International School, Juhu
Unit 1 : Revision sheet
Grade: VIII
Subject: Biology
Date: _________
Roll No: _________
mark scheme
Topic: Human Reproduction, Human influence on the environment
1. What is a gamete?
___________sex cell found in male and a female______________________________
2. Name the male gamete and the female gamete?
____________male - sperm; female - ovum/egg___________________________
3. State the name of the pouch covering the testes___scrotum___________________
4. Why is it important that the temperature of the scrotum remains at 35 degrees Celsius
________________________lower temp favours sperm production______________
5. Label
the
diagram
of
the
male
reproductive
system
shown.
urinary bladder
seminal vesice
prstrate gland
cowpers gland
sperm duct
urethra
epididymis
testis
scrotum
6. In males where is testosterone produced
______________________testis__________________________________________
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7. State the function of the epididymus
______________storage and maturation of sperms____________________________
8. Name
the
tube
through
which
sperm
are
released
through
the
penis
_________________urethra
9. Explain the difference between seminal fluid and semen
_________________________seminal fluid only contains the nutriens whereas semen
contains the nutritive fluid and sperms______________________________
10. The release of sperm from the penis is called
_____________________________ejaculation_______
11. Label
the
diagram
of
the
female
reproductive
system
Structure of the Female reproductive system
Fallopian tube
(Oviduct)
Funnel
Ovary
Ovarian Ligament
Uterus
Cervix
Lining of uterus
(endometrium)
Wall of uterus
Vagina
Vulva
12. On which days of a typical cycle does menstruation (having a period) occur
_______________________________________day 1 to 4______________________
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13. Label the stages of the menstrual cycle shown in
If fertilisation has not occurred the
cycle begins again with the breakdown
of the endometrium.
The Menstrual Cycle
28
27
1
2
26
3
4
25
DAY 1-5 : Blood from the
womb lining is shed from
the body
5
24
23
6
22
7
21
8
After day 5 the lining of
the uterus repairs and
builds up again
20
9
19
18
10
Fertile period
17
16
15
Implantation may happen
14 13
12
11
Ovulation occurs on Day 14
14. Which hormones in female are associated which secondary sexual characteristics
______________________________oestrgen and progesterone__________
15. State two secondary sexual characteristics in females
___________________________widening of hips; voice become sharper; enlargement
of breast; development of hair in the arm pit and pubic region;__________
16. State two advantages of breastfeeding
________________develops a bond between the mother and the baby; and provides
the baby with the antibodies which help fight infections_________________________
17.
Human activity can damage the environment.
Use words from the list below to complete the following sentences.
You may use each word once, more than once or not at all.
biodegradable carbon dioxide deforestation
pesticides
pollutants sewage
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oxygen
sulphur dioxide
(a) Substances produced by human activity which cause damage to living organisms
are called
…………………………………………pollutants………………………………………………..
(b) ………………………………sewage………………… can pollute water supplies if not
treated carefully.
This is because it encourages the growth of bacteria which uses up in the water.
This can be harmful to fish.
(c) Each year large areas of rain forest are cut down and the trees burnt. This increases
the amount of ………………………………carbon dioxide…………………………………in the
air.
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