#5 b1 topic 1 - extreme environments (part 1 of 2)
DESCRIPTION
B1 Topic 1 - extreme environments (part 1 of 2): Edexcell GCSE Science -> Higher -> Core Science -> B1 -> Topic 1 -> Extreme Environments 5th in the B1 Topic 1 series - Contains everything you need to know from the specification* - Specially designed for triple and dual science GCSE - A good teaching tool - A good revision tool - Compliments the CGP revision books *From Edexcell GCSE Science from 2011 specification, suitable for 2014 & 2015 exams Contains detailed notes and questions that may come up in the exams. Please comment with your views or any questions that you haveTRANSCRIPT
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)