B1 TOPIC 1 - VARIATION

Extreme Environments (part 1/2 )

CVHS GCSE POWERPOINT SHARE

Adapting to the deep seaIn the deep sea, there is...• No Light• Plants can’t grow• Food is scarce

Some deep sea animals are adapted to living here.

Look at the next slides and think how the organism may have adapted to survive in the deep sea and why.

Adapting to the deep sea

Angler Fish

Light Emitting spine sticking out of it’s head to attract prey that it can eat

Adapting to the deep sea

Rat-Tail Fish

Huge mouth to scoop up particles of food on the seabed

Other Examples

Some fish have big eyes, adapted to the dark so that they can see better.

Other fish have long feelers to help them locate prey and

feel around the seabed

QuestionsGive some ways in which fish have adapted to living in the deep sea (4)

What does an Angler fish have that help’s it to survive in the deep sea (1)

Hydrothermal VentsThere are hydrothermal vents on the seabed that send out hot water and minerals into the ocean.

Various organisms have adapted to live around these vents.

Conditions are extremely hot and under high pressure, so organisms must be specially adapted to be able to cope.

Bacteria

Chemicals from the vents support bacteria that chemosynthesise (make their own food using chemical

energy).

Animals feed on this bacteria, which are a good source of food.

QuestionsWhat is a hydrothermal vent? (2)

Explain how bacteria survive near hydrothermal vents, and how they are adapted to live there (3)