Biology2 7D Ecosystems Flashcards
What is the term used to describe differences between organisms?
Variation
Give an example of ‘continuous variation’
Height, weight, hair length, Arm length
Give an example of ‘discontinous variation’.
Eye colour, shoe size
Give some adaptations of a polar bear to explain how it survives in the arctic.
Thick fur, white fur to catch prey, wide paws to walk on the ice.
What is a habitat?
Where an organism lives.
Which words describes and organism which is eaten by another?
Prey.
What type of organism is a cow?
herbivore
What is the name to describe an organism which makes its own energy?
Producer
Where is energy stored in an organism?
In its muscles and fat.
Name 2 physical factors which can effect the environment an organism lives in.
Light, temperature, soil type, wind speed, salinity.
Why was the pesticide DDT banned?
Because it is poisonous which gets more concentrated up the food cahin and was killing top predators such as peregrine falcons.
In a food chain, not all the energy is passed onto the next level. What happens to it?
It is lost as Movement, Respiration, growth, reproduction, excretion, nutrition.
Why are there always less predators in a food chain than prey?
Because the energy is lost through the food chain from one organism to another.
Plants need light to grow, apart from this what other resources do they need?
Water and minerals.
What word describes the moving of animals from one part of Earth to another?
Migration
How is this bird adapted to eat flesh?
A short, sharp and hooked beak can be used to tear flesh.
