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Science questions, unit 3
Nama / NameKelas / ClassTarikh / Date

Humans

23 marks. Use Practice to check each answer as you go, or Exam to answer everything first. Ask a grown-up to help you mark the written answers.

Section A: objective questions

10 marks
Choose the best answer for each question.
1

Question 1

How do humans reproduce?
Show answerHide answer
B
Humans reproduce by giving birth to babies.
For the teacher: Remembering, low difficulty, standard 3.1.1
Textbook p. 24
2

Question 2

A baby is at which stage of growth?
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D
A baby is an infant. It is the first stage of growth.
For the teacher: Remembering, low difficulty, standard 3.1.2
Textbook p. 25
3

Question 3

Diagram 1 shows the stages of human growth. Which stage comes after the child?
Stages of human growth from infant to adult
Diagram 1
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A
The order is infant, child, teenager, adult.
For the teacher: Understanding, low difficulty, standard 3.1.2
Textbook p. 25
4

Question 4

Diagram 2 shows a boy's shirt after one year. What change has happened to the boy?
A boy with a tight shirt after one year
Diagram 2
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C
The shirt is tight because the boy has grown bigger.
For the teacher: Understanding, low difficulty, standard 3.1.3
Textbook p. 26
5

Question 5

Which is a change we experience as we grow?
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B
As we grow we become taller, heavier and bigger.
For the teacher: Remembering, low difficulty, standard 3.1.3
Textbook p. 27
6

Question 6

Two pupils are the same age. Why is one pupil taller than the other?
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D
Pupils of the same age can have different growth.
For the teacher: Applying, medium difficulty, standard 3.1.3
Textbook p. 28
7

Question 7

What is the coloured part of the eye called?
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A
The iris is the coloured part of the eye.
For the teacher: Understanding, low difficulty, standard 3.1.4
Textbook p. 31
8

Question 8

Diagram 3 shows Kanang's eye and his father's eye. What is the same?
Kanang's eye and his father's eye
Diagram 3
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C
Kanang inherited the colour of his father's iris.
For the teacher: Understanding, low difficulty, standard 3.1.4
Textbook p. 31
9

Question 9

Which feature is inherited from parents?
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A
Hair type is inherited. A haircut, a uniform and a skill are not.
For the teacher: Remembering, low difficulty, standard 3.1.5
Textbook p. 32
10

Question 10

Aina has the same wavy hair as her grandmother. This is called
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D
Getting features from parents or ancestors is called inheritance.
For the teacher: Applying, medium difficulty, standard 3.1.5
Textbook p. 32

Section B: structured questions

13 marks
Answer all questions. Circle the answer or write it in the space.
11

Question 11

Choose the correct stage of growth.
[1 mark] (a)A baby who is just learning to crawl is an
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infant
[1 mark] (b)A mother and father are
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adults
[1 mark] (c)A young boy of seven is a
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child
For the teacher: Remembering, low difficulty, standard 3.1.2
Textbook p. 25
12

Question 12

Diagram 4 shows how a boy and a baby change after one year.
A boy measured for height and a baby weighed, before and after one year
Diagram 4
[1 mark] (a)The boy is now
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taller
[1 mark] (b)The baby is now
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heavier
[1 mark] (c)Write one more change that happens as we grow.
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The three changes are size, height and weight.
Tick each point you got.
For the teacher: Understanding, low difficulty, standard 3.1.3
Textbook p. 27
13

Question 13

Nisa, Kugan and Kanang measure their weight and height and compare them.
[1 mark] (a)Kugan weighs 28 kg. Kanang weighs 24 kg. Who is heavier?
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Kugan
[1 mark] (b)They are all the same age. Are their growths the same or different?
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Different
Growth is different among individuals, even at the same age.
For the teacher: Analysing, medium difficulty, standard 3.1.3
Textbook p. 30
14

Question 14

Diagram 5 shows a girl and her parents.
A girl with her mother and father; features listed as wavy hair from father, fair skin and brown iris from mother
Diagram 5
[1 mark] (a)Whose wavy hair type did the girl inherit?
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Tick each point you got.
[1 mark] (b)Name one feature the girl inherited from her mother.
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Tick each point you got.
[1 mark] (c)A child inherits features from ______ or ______.
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Ancestors are grandparents and the family before them.
Tick each point you got.
For the teacher: Applying, medium difficulty, standard 3.1.5
Textbook p. 33
15

Question 15

Haziq has curly hair like his grandfather. His parents have straight hair.
[1 mark] (a)Is Haziq's hair type an inherited feature?
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Yes
Hair type is inherited from parents or ancestors. His grandfather is his ancestor.
[1 mark] (b)Why is Haziq's hair type different from his parents'?
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Tick each point you got.
For the teacher: Evaluating, high difficulty, standard 3.1.5
Textbook p. 32