Responding to the Environment

animals are constantly receiving information about their changes in their __________. These changes can cause an animal to _______ in a particular way.

The factors which cause a response from an animal are called _____

Daphnia are tiny animals that live in ponds. They feed on green algae. When light is shone from one direction on water containing Daphnia, they move ______ the light.

The survival of Daphnia depends on stimuli because the green algae need light to _________. If they move towards the light, the Daphnia have a ______ chance of finding food

Woodlice are small animals that live under bark and leaf litter. They breathe through ____.

If woodlice are put in a container which is moist at one end and dry at the other, they move about ______ in the dry end but move more ______ at the wet, so they tend to gather at the ___ ___.

Woodlice ____ water as they breathe through gills.

If woodlice are put into a container which is partly lit and partly in shade, they move about _______ on the lit side of the container, while they tend to ____ down on the dark side, so they tend to gather on the _____ side.

Woodlice tend to stay out of the _____, because they can be easily spotted and eaten by ________.

Paramecium is a tiny single-celled organism that lives in pond water. It feeds on decomposing bacteria which live in water that is slightly ______.

If paramecium are put into a container which has a ______ pH at one end and a ______ pH at the other end, they move towards the acidic end of the container.

Paramecium move towards weakly acidic water, to ______ their chances of finding food.

Environmental factors which affect the behaviour of animals include ____, _______ and __.

The responses that animals make, stimuli, _______ the chances of survival.

An example of a regularly occuring stimuli is:
the change from ____ day to ____ night every 24 hours

A stimuli can trigger _________ ________ in animals

Rhythmical behaviour is behaviour which is repeated at ______ ______. It is controlled by an animals internal biological clock but is triggered by a regularly occuring ______ ______.

In the absence of the trigger stimulus, the _______ ______ will still occur

Most animals are active during the day, these are known as _______ animals. The trigger stimulus for there animals is increasing light intensity.

diurnal animals depend on a trigger stimulus which occurs everyday. It increases the chances of _______ ____ and increases the chances of ________.

Swallows fly from Britain to warmer climates every autumn, this rhythmical behaviour is called _______. The trigger stimulus for this is __________ daylength in autumn.

Swallows migrate to somewhere warmer, and a place which has more food available to them, to increase their _______ of _______

Animals like hedgehogs, in late autumn every year, enter a state called ________. The trigger stimuli for this behaviour are decreasing ________ and decreasing _______

Hedgehog enters hibernation to enable the animals to _______ the harsh winter conditions, increasing their chances of survival.

Animals like rabbits show ____ behaviour every spring. The trigger stimulus for this behaviour is _______ daylength.

Mating in spring is important so that their young are born when there is plenty of ____ for them to ____, increasing the chances of survival.

Some animals, like deer show mating behaviour in autumn, because they have _____ pregnancy times so their young are still born in the _____ and have an increased chance of survival.

If larger animals mated in spring, their young would be born just before winter, when conditions for survival are _____. The trigger stimulus for mating behaviour in deer is ________ daylength.