Leves Of Organisation

Question 1

Other than the tissue given in part (b), name two examples of tissues found in an animal. [2]

Answer 1

Muscle / a named example, e.g. smooth muscle / cardiac muscle / skeletal muscle; [1 mark]
Epithelial / a named example, e.g. ciliated epithelium / the epidermis / the lining of the small intestine; [1 mark]
Connective / a named example, e.g adipose / cartilage / elastic / bone; [1 mark]
Nerve/nervous / a named example, e.g. the retina; [1 mark]

Question 2

State why it is not possible for prokaryotic organisms to have tissues. [1]

Answer 2

Prokaryotes are single-celled organisms (and tissues are made up of many cells); [1 mark]

Question 3

A plant root is an example of an organ. Plant roots are able to respond to water in the soil by growing towards a water source.
Explain how this demonstrates that plants are living organisms. [1]

Answer 3

It shows sensitivity / the ability to sense the environment/surroundings; [1 mark]
It shows the ability to respond to the environment/surroundings; [1 mark]
[Total: 1 mark]

Question 4

What is a cell?

Answer 4

Basic functional and structural units in a living organism

Question 5

The leaf is an example of an organ because… [2]

Answer 5

It contains a group/collection of / several tissues; [1 mark]
Which work together to carry out photosynthesis; [1 mark]