Unit 1: 4 - Adaptation for Survival Flashcards
What are special features of organisms called?
Adaptations.
Why do most organisms live in temperatures below 40°C?
So their enzymes will work (well).
What do adaptations allow an organism to do?
They allow them to survive in a certain habitat, even when the conditions are more extreme (e.g. Very hot, high salt concentration, high pressure etc.).
What do we call organisms that survive in very severe conditions where their enzymes wouldn’t usually work and denature?
Extremophiles.
What benefit (and drawback) does a small surface area to volume ratio give an organism?
A small SA:V ratio allows animals to conserve more heat, however they cannot cool down as quickly.
What type of animals have small SA:V ratios?
Larger animals.
How do plants lose water?
As water vapour through the stomata.
Give 3 characteristics a plant can have to conserve water.
- Small leaves;
- Waxy leaves;
- Swollen stem to store the water.
Animals are always in ____ with each other for water, food, space, mates, and breeding sites.
Animals are always in competition with each other for water, food, space, mates, and breeding sites.
An animal’s _____ will be large enough to find water, food, and have space for breeding.
An animal’s territory will be large enough to find water, food, and have space for breeding.
Give at least 3 ways an animal can be adapted to compete and survive.
Any 3 from…
- Warning colours;
- Camouflage;
- Speed;
- Horns;
- Colour changes.
What do plants compete with each other for?
- Light;
- Water;
- Mineral ions from the soil.
What are ovipositors?
Body parts that allow an organism to place eggs deep inside something (usually a flower).
Its leaves have a smaller surface area which reduces water vapour leaving the plant.
Give 4 non-living factors that causes a change in an organism’s environment.
- Temperature;
- Rainfall;
- Light;
- Oxygen or CO2 levels.
