Curriculum
Course: Alhussan Biology — Stage 9
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Curriculum

Alhussan Biology — Stage 9

Chapter 9: Plants and Photosynthesis

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Chapter 10: Excretion in Humans

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Chapter 11: Human Genetics and Development

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Chapter 12: The Carbon Cycle and Climate Change

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Chapter 13: Variation and Natural Selection

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Quiz

13.7 Chapter 13 Review: Variation and Natural Selection — Quiz

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  • Questions count: 10
  • Passing grade: B+
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1.
Which term matches this definition? “Variation with distinct groups, such as blood group.”
Discontinuous variation
Continuous variation
Acquired variation
Environmental variation
2.
How is continuous variation best shown?
On a histogram
As a dichotomous key
As a food web
On a pie chart only
3.
True or false? Acquired characteristics, such as strong muscles from training, are inherited.
True
False
4.
Genetic variation results from meiosis, random fertilisation and ____.
mutation
diet
sunlight
exercise
5.
Which is an example of natural selection?
A plant in shade growing tall
A dog learning tricks
Antibiotic-resistant bacteria
A tanned person
6.
True or false? Many features, like height, depend on both genes and environment.
True
False
7.
Body mass of goats in a herd. Which graph is correct?
Dr Dabour Hub Academy - figure 1
A
B
C
D
8.
The chart shows the results of two features in a class. Which is discontinuous?
Dr Dabour Hub Academy - figure 2
Neither
Both
Feature 1 (tongue rolling)
Feature 2 (arm span)
9.
In a herd of 30 goats, 12 are in the 50–59 kg group. What percentage is this?
2%
40%
400%
60%
10.
Why did extra-long legs NOT become common in giraffes?
Extra-long legs easily break, a disadvantage
Giraffes have no legs
Legs are acquired
Long legs are always best
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Part of Chapter 13: Variation and Natural Selection — see every lesson and quiz in this unit.
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