Welcome to your B7 Quiz 10.3 – Die Erdzeitalter

1. 
What is Earth's history divided into?

2. 
Fill in the blank:

The very first life forms appeared near the end of the Precambrian, probably about billion years ago, in the form of simple bacteria.

3. 
The Palaeozoic era began with a huge explosion of new species in the sea.

4. 
Fill in the blank:

The earliest period of the Palaeozoic era is called the .

5. 
The Mesozoic era is known as the age of which animals?

6. 
Fill in the blank:

Dinosaurs arose in the Triassic, had their heyday in the , and died out at the end of the Cretaceous.

7. 
The first mammals appeared alongside the dinosaurs during the Mesozoic era.

8. 
Fill in the blank:

The Cenozoic era began 65 million years ago, but the first humans (Homo sapiens) only appeared about years ago.

9. 
Respiration is best described as:

10. 
Fill in the blank:

All the chemical reactions that take place in a living organism, including respiration, are together called .

11. 
Sensitivity is the ability of an organism to detect changes in its environment and respond to them.

12. 
Fill in the blank:

In Figure 1.3, a is shown trapping a fly, which is an example of sensitivity in plants.

13. 
Which example shows sensitivity in an animal?

14. 
Fill in the blank:

Growth is defined as a permanent increase in size and .

15. 
Dry mass is measured by weighing an organism while it is still alive and full of water.

16. 
Fill in the blank:

Reproduction means making more organisms of the same .