Natural Selection

This lesson looks at what a species is, how variation leads to natural selection and how Charles Darwin's theory came about.

This quiz includes images that don't have any alt text - please contact your teacher who should be able to help you with an audio description.

Quiz:

Intro quiz - Recap from previous lesson

Before we start this lesson, let’s see what you can remember from this topic. Here’s a quick quiz!

Q1.Which is the most correct statement for competition?

1/7

Q2.Which two organisms in the food web compete for food? [Credit: Matthew C. Perry, US Geological Survey, Wikimedia Commons]

2/7

Q3.The images show water lily growing in a pond [Credit: Pixabay]. Waterweeds are at the surface of the pond. Why does waterweed not grow underneath the water lily?

3/7

Q4.A polar bear is adapted to live in the arctic. Which of the following is NOT true?

4/7

Q5.A cactus is adapted to survive in desert conditions. Which of the following is NOT true?

5/7

Q6.A curlew is a bird that feeds on small animals which live in mud by the sea. It lays spotted eggs in a nest on the ground. Which adaptation helps the curlew to walk in shallow water?

6/7

Q7.Which is the best explanation as to why cat fleas have a pointed mouth?

7/7

This quiz includes images that don't have any alt text - please contact your teacher who should be able to help you with an audio description.

Quiz:

Intro quiz - Recap from previous lesson

Before we start this lesson, let’s see what you can remember from this topic. Here’s a quick quiz!

Q1.Which is the most correct statement for competition?

1/7

Q2.Which two organisms in the food web compete for food? [Credit: Matthew C. Perry, US Geological Survey, Wikimedia Commons]

2/7

Q3.The images show water lily growing in a pond [Credit: Pixabay]. Waterweeds are at the surface of the pond. Why does waterweed not grow underneath the water lily?

3/7

Q4.A polar bear is adapted to live in the arctic. Which of the following is NOT true?

4/7

Q5.A cactus is adapted to survive in desert conditions. Which of the following is NOT true?

5/7

Q6.A curlew is a bird that feeds on small animals which live in mud by the sea. It lays spotted eggs in a nest on the ground. Which adaptation helps the curlew to walk in shallow water?

6/7

Q7.Which is the best explanation as to why cat fleas have a pointed mouth?

7/7

Video

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Worksheet

These slides will take you through some tasks for the lesson. If you need to re-play the video, click the ‘Resume Video’ icon. If you are asked to add answers to the slides, first download or print out the worksheet. Once you have finished all the tasks, click ‘Next’ below.

This quiz includes images that don't have any alt text - please contact your teacher who should be able to help you with an audio description.

Quiz:

Natural Selection

Don’t worry if you get a question wrong! Forgetting is an important step in learning. We will recap next lesson.

Q1.Which statement best describes the term species?

1/8

Q2.If two different species reproduce to produce infertile offspring, what could be said about the parents?

2/8

Q3.What key word means the difference between the same species?

3/8

Q4.What is the theory of natural selection?

4/8

Q5.Who came up with the theory of natural selection?

5/8

Q6.What is the correct order to describe natural selection?

6/8

Q7.Why did the darker months outcompete the light moths?

7/8

Q8.Which feature of the finches on the different Galpagos Islands varied?

8/8

This quiz includes images that don't have any alt text - please contact your teacher who should be able to help you with an audio description.

Quiz:

Natural Selection

Don’t worry if you get a question wrong! Forgetting is an important step in learning. We will recap next lesson.

Q1.Which statement best describes the term species?

1/8

Q2.If two different species reproduce to produce infertile offspring, what could be said about the parents?

2/8

Q3.What key word means the difference between the same species?

3/8

Q4.What is the theory of natural selection?

4/8

Q5.Who came up with the theory of natural selection?

5/8

Q6.What is the correct order to describe natural selection?

6/8

Q7.Why did the darker months outcompete the light moths?

7/8

Q8.Which feature of the finches on the different Galpagos Islands varied?

8/8

Lesson summary: Natural Selection

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