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Form 3 ScienceChapter 4
FORM 3 CHAPTER 4REPRODUCTION
1. Diagram 1 shows the parts of a flower.
(a) Label P, Q and R on Diagram 1 with the following words.
Ovary Stigma Petal
[3 marks]
(b) What is the function of P?
………………………………………………………………………………………………………
[1 mark]
(c) What happens to R after pollination and fertilisation?
………………………………………………………………………………………………………
[1 mark]
(d) The male reproductive organ of the flower is known as the stamen. What is the stamen made up of?
………………………………………………………………………………………………………
[1 mark]
158
Diagram 1
P: ……………………………
Q: ……………………………
R: ……………………………
Form 3 ScienceChapter 4
2. Diagram 2 shows the male reproductive system in humans.
(a) Label L, M and N on Diagram 2 with the following words.
Sperm duct Seminal vesicle Testis
[3 marks]
(b) Match the part of the male reproductive system to its function. Draw lines to match.
[3 marks]
159
Diagram 2
L: ……………………………
M: ……………………………
N: ……………………………
FUNCTIONPART
L
M
N
Channels sperms and urine out of the body
Produces sperms
Carry sperms form the testis to the urethra
Secrete a fluid that nourishes the sperms
Form 3 ScienceChapter 4
3. Diagram 3 shows the female reproductive system in humans.
(a) Using the following words, label P, Q and R on Diagram 3.
Ovary Fallopian tube Uterus
[3 marks]
(b) What is the function of Q?
………………………………………………………………………………………………………
[1 mark]
(c) (i) Name the process that takes place at P.
……………………………………………………………………………………………………
[1 mark]
(ii) Explain what happens during the process in (c) (i).
…………………………………………………………………………………………………
[1 mark]
(d) Label the cervix on Diagram 3 with the alphabet, S.
[1 mark]
160
Diagram 3
P: ………………………………
Q: ………………………………
R: ………………………………
Form 3 ScienceChapter 4
4. Diagram 4 shows the structure of flowers P, Q, R and S.
(a) Based on the observations in Diagram 4, state one characteristic of each flower.
P: ………………………………………………………………………………………………..
Q: ……………………………………………………………………………………………….
R: ……………………………………………………………………………………………….
T: ……………………………………………………………………………………………….
[4 marks]
161
P Q
R S
Diagram 4
Form 3 ScienceChapter 4
(b) Classify P, Q, R and S into two groups based on common characteristics.
[4 marks]
(c) Based on the observations in Diagram 4, make an inference on how the flowers are pollinated.
R: …………………………………………………………………………………………………..
S: …………………………………………………………………………………………………..
[2 marks]
162
P, Q, R and S
Common characteristic
Alphabets representing the
flowers
Form 3 ScienceChapter 4
5. Diagram 5 shows the process of sexual reproduction in human beings.
163
+
P: …………………………..
Q: …………………………..
R: …………………………..
Baby
Diagram 5
Process S
Cell M Cell N
Form 3 ScienceChapter 4
(a) (i) What is process S?
..…………………………………………………………………………………………………
[1 mark](ii) Where does process S takes place in the human body?
……………………………………………………………………………………………………
[1 mark]
(b) Label P, Q and R on Diagram 5.
[3 marks]
(c) State one difference between cell M and N.
………………………………………………………………………………………………………
………………………………………………………………………………………………………
[1 mark]
164
