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]

R: ……………………………

Q: ……………………………

P: ……………………………

Diagram 1

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]

N: ……………………………

M: ……………………………

L: ……………………………

Diagram 2

Secrete a fluid that nourishes the sperms

Carry sperms form the testis to the urethra

Produces sperms

Channels sperms and urine out of the body

N

M

L

PART FUNCTION

3. Diagram 5 shows the process of sexual reproduction in human beings.

(a) (i) What is process S?

..…………………………………………………………………………………………………

[1 mark]

Cell NCell M

Process S

Diagram 5

Baby

R: …………………………..

Q: …………………………..

P: …………………………..

+

(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]

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]

Diagram 4

SR

QP

(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]

Alphabets representing the

flowers

Common characteristic

P, Q, R and S

5.Diagram 1 shows the human growth curve based on body mass.

(a) On Diagram 1, label the curves that represent the growth of a male and a female.

[2 marks](b) At what age range is

(i) the body mass the same for male and female?

………………………………………………………………………………………………..

[1 mark] (ii) the body mass gain in male faster than the female?

………………………………………………………………………………………………...

[1 mark] (iii) the body mass gain in female faster than male?

..……………………………………………………………………………………………...

[1 mark]

(c) At what age do boys begin to develop their sexual characteristics?

………………………………………………………………………………………………….

[1 mark]

Body mass (kg)

Diagram 1

(d) Adolescents require a lot of carbohydrates in their diet. Explain why.

…………………………………………………………………………………………………

[1 mark]

(e) Besides body mass, state another physical quantity that can be used to compare and contrast the growth rates of humans.

…………………………………………………………………………………………………..

[1 mark]

5. Diagram 2 shows a man-made object in space.

(a) Name the object shown in Diagram 2.

………………………………………………………………………………………………………

[1 mark]

(b) Name two mode of transport that can be used to send this object into space.

(i) …………………………………………………………………………………………………

(ii) ………………………………………………………………………………………………….

[2 marks]

(c) State two functions of the object shown in Diagram 2.

(i) …………………………………………………………………………………………………..

(ii) ..…………………………………………………………………………………………………

[2 marks]

(d) Name the technology that uses aircraft, satellites and space probes to collect data and information in space and send them back to be processed by computers on earth.

………………………………………………………………………………………………………

[1 mark]

Diagram 2

(e) Read the passage below.

(f) If you were an contruction engineer , discuss the importance of weather forecast.

……………………………………………………………………………………………………

………………………………………………………………………………………………………

………………………………………………………………………………………………………

………………………………………………………………………………………………………

[2 mark]

(g) Suggest two instruments that can be used to send satellites into the earth’s orbit.

(j) …………………………………………………………………………………………………

(ii) ………………………………………………………………………………………………….

[2 marks]

A meteorological (weather) satellite helps us to forecast weather accurately. This type of satellite can detect changes in the temperature, wind and pressure in the atmosphere. The imformation received from this satellite can help us in forecasting the place and time of the occurance of typoons, floods, cyclones as well as high ang low tides. This satellite is able to take photographs such as clouds, ice, and snow and send them through signals to meteorological station on earth. With this facility, an early warning can be givin and steps can be taken to overcome or avoid possible disasters.