W hat have I learned?

1 In your own words, explain the nutrition function, the interaction function and the reproduction function.

2 Which word doesn’t belong? animal, autotroph, vertebrate, mobility.

3 What is the main difference between a vertebrate and an invertebrate?

4 Complete the text with the missing words: gills, cells, waste, oxygen, stomach, circulatory, anus, carnivores, mouth, intestine

Sharks

Sharks are ... that eat other fish and different types of invertebrates. Their ... has lots of rows of sharp teeth that they use to chew up their prey. The food then travels through the oesophagus to the ... .

A shark’s ... has folds that absorb most of the nutrients. After this is the rectum. At the end of rectum, the cloaca lets waste exit the body through the ... .

To capture ... from water and expel carbon dioxide, sharks use ... that open directly into the environment through slits in the skin.

Nutrients and oxygen get transported to all the ... in the shark’s body via the ... system. Sharks expel cell ... in the urea. This gets filtered in the kidneys and ends up at the cloaca.

5 Which function in animals do these words belong to?

digestion, heterotroph, respiration, waste a) Animals reproduce sexually. b) In viviparous animals, the embryo develops outside the mother’s body, inside an egg.

6 The mirror Compare the locomotor systems of these animals: crab, spider and fly. Write the similarities and differences in a table.

7 In your notebook, complete the text with the missing words: locomotor, nervous, sense, perceive.

Animals use their ... organs to ... changes in the environment. The ... system receives signals from the environment, interprets them and send instructions to the ... system. The ... system translates the instructions into movement.

8 Are these statements true (T) or false (F)? Correct the false ones.

9 The animal in the picture is a duckbilled platypus. Gather the information below and make a fact sheet: a) Name b) Description c) How it feeds d) What its sense organs are like e) What its locomotor system is like f) How it reproduces and how it looks after its offspring a) Cleaning and disinfecting wounds. b) Using sunglasses on very sunny days. c) Having regular medical check-ups. d) Eating fruit often.

10 Why are these things important for our physical wellbeing?

Don’t forget to complete your photo album for this unit on anayaeducacion.es

Traffic lights. Apply the following colour code next to each activity in your notebook.

I know the answer.

I need help.

I don’t know the answer.