Leaving certificate biology
Unit 1Ecology theory5 Topics|1 Quiz
Nutrient recycling4 Topics|1 Quiz
Ecological relationships and population dynamics2 Topics
Human impact on the ecosystem2 Topics
Study of a grassland ecosystem3 Topics
Responses in the Flowering Plant4 Topics|1 Quiz
Unit 3Sexual reproduction in the flowering plant1 Topic
The human reproductive system3 Topics
The menstrual cycle2 Topics
The circulatory system4 Topics
The heart5 Topics
Types of organisms in food chains
Types of organisms in an ecosystem
Autotrophs : organisms that make their own food
Heterotrophs : organisms that can not make their own food
Herbivores : organisms that only eat plants
Carnivores: animals that eat animals
Omnivores : animals that eat plants and animals
Adaptations of organisms to their habitat
- It is important that organisms are adapted to their habitat so that they can survive
There are three types of adaptation an organism can have:
A feature of an organism’s body that helps it to survive/reproduce
- Penguins have a short stiff tail. They can lean backwards and balance on their heels and their tail. This reduces heat loss from their feet to the ground.
- The colour of a penguin’s body helps to camouflage it when it is swimming. From above, its dark back blends in against the sea and from below, its light front blends in against the sky.
A body process that helps an organism to survive/reproduce
- Males can go without food for around 100 days. This allows them to survive during winter when no food is available.
- A penguin’s resting heart rate can slow down greatly during a dive so that it can conserve oxygen underwater and spend more time finding food.
Responses made by an organism that help it to survive/reproduce
- Adult male penguins huddle together during winter. This helps them to avoid heat loss and survive until spring.
- They breed during the winter so that their offspring reach independence in summer when more food is available.