← Year 10 Biology

Quick check: evidence, new species and evolution today

A few quick questions on the evidence for evolution, how new species form and die out, and evolution happening now. Taught in class; use this to check yourself.

Whales have finger bones. Bacteria shrug off drugs. What do they have in common?

Your teacher covers the evidence and the examples in class. These questions check the basics of how natural selection explains the past and the present.

ExplainUse the particle model to explain what you saw.

Evidence

Is it evidence for evolution?

Fossils in layers, with simpler forms in older rock
Similar bones in a human arm, a bat wing and a whale flipper
DNA more similar between closely related species
Related animals living in the same region, such as Australian marsupials
Two animals that are the same colour

Why do scientists place so much weight on several lines of evidence?

Match each line of evidence to what it shows.

Fossils in rock layers
Similar bones in an arm, a wing and a flipper
How similar species' DNA is
Marsupials found mostly in Australia

ExplainUse the particle model to explain what you saw.

Past diversity

A population is split by a new mountain range. Over a long time the two groups face different conditions. What might happen?

Why do species go extinct?

What does the fossil record show about species over time?

ExplainUse the particle model to explain what you saw.

Evolution now

Antibiotics kill most bacteria in an infection, but a few resist. What happens next?

A farmer sprays the same pesticide for years and it works less well. Why?

Which statement about evolution is correct?

Why are there millions of different species today?

For teachers

A self-test on the lines of evidence for evolution, speciation and extinction, and evolution in present populations (AC9S10U02, nodes 3, 4 and 5, taught in class; node 3 a hinge). About 16 minutes.

Open the teacher guide: answers, solutions, slides and a worksheet.

Students will be able to

Before class

A Quick check: a few questions on what students should know for AC9S10U02 nodes 3, 4 and 5, which you teach in class. It has no board, no clip and no new teaching, and it is optional, so it never holds up course completion. Set the width with ?width=minimum, typical (default) or wider.

Use it as a self-test after your teaching, a starter, or revision. Variation and natural selection are on screen (nodes 1 and 2). Evidence and the extended examples are for class; fossils, models and case studies work best in hand. Check your school's approach to teaching evolution and present it as the scientific theory with its evidence.

Running the lesson

  1. Node 3: ask for a third line of evidence out loud after the sort.
  2. Node 5: ask students to retell the resistance story in their own words.

The hard part (on purpose)

Using selection, not need or effort. When a student says bacteria adapt to survive, ask whether individual bacteria change or whether some were already different.

When students get stuck

Stretch and support

Stretch: Choose a current example (cane toads, finches, rock pocket mice). What is the selection pressure, and what has changed in the population?

Support: Give a story sequence on cards to order: variation, pressure, survival, reproduction, change.

Where it leads

Back in class: a selection simulation; a case study on antibiotic resistance and why courses should be completed.

What each step is for

Now you can
You reached the endBack to Year 10 Biology