Chapter 2-living Things Flashcards
Name the characteristics of living things:
Movement Respiration Sensitivity (response) Growth Reproduction Excretion Nutrition
*{MRS GREN}
What are living things?
Organisms (made of cells)
Explain Nutrition:
Nutrition is the way in which living things get and use their food
Explain Respiration:
Respiration is the way living things get energy.
{Food + oxygen —> energy + carbon + water + carbon dioxide}
Explain excretion:
Excretion is getting rid of wastes that are made in cells.
(The removal of waste products)
E.g, pooping
Explain Growth:
Growth results from cells dividing.
Cells increase in size or cells divide to from extra cells.
Explain Reproduction:
Reproduction is being able to produce new individuals of the same kind.
(Reproduction prevents organisms from going extinct.)
Explain movement:
The movement of limbs in mammals or petals in plants.
E.g moving your arm/opening and closing of petals on a flower,
Explain Sensitivity/Response:
Response is the ability to react to changes in the environment.
e.g, when you’re waiting for the bus, and when it comes you put out your hand/when a flower moves towards the light and open their petals in daytime and close them at night.
What are the two major groups of organisms?
Animal group and plant group
What are the two major groups of animals?
Vertebrates(with backbone) and Invertebrates(without backbone)
E.g, lion, horse, dog, cat, e.t.c are VERTABRATES
E.g, crab, slug, snail, ant, butterfly, e.t.c are INVERTEBRATES
How are plants very important on the planet?
- They produce FOOD for themselves and for other living things.
- They provide SHELTER for animals.
- They provide MATERIALS useful for humans such as linen, cotton, medicines and dyes.
- Plants also take in carbon dioxide from the air which helps REDUCE GLOBAL WARMING.
How are animals important on this planet?
- They provide FOOD for humans and other animals.
- They provide MATERIALS we need like wool and leather.
- We keep animals as pets which can help to REDUCE STRESS.
- Many SPORTS depend on them, e.g. Horse racing.
How do we identity plants and animals?
By using a KEY
What is the KEY?
A key asks a series of questions about the features of an organism you want to identify. (For plants these could be the shape of the leaf, the colour of the flower, the number of petals, e.t.c.) By answering the questions you are lead to the name of the organism.
