Characteristics & Classification of Living Organisms (1)

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What is MRS GREN

Movement, Respiration, Sensitivity, Growth, Excretion, Nutrition

What is Movement?

Action made by an organism or parts of an organism

What is Respiration?

The chemical reactions that happen in cells to break down nutrient molecules and release energy

What is Sensitivity?

The ability to detect or sense stimuli in the internal or external environment

What is Growth?

A permanent increase in size and dry mass by an increase in cell number or cell size or both

What is Excretion?

The removal from organisms of toxic materials, the waste products of metabolism

What is Nutrition?

The taking in of a substance used for energy or growth

What is a species?

Group of similar organisms that can reproduce to give fertile offspring

What is the sequence of classification?

Kingdom, Phylum, Class, Order, Family, Genus, Species

What are the 5 Kingdoms?

Animals, Plants, Fungi, Protoctists, Prokaryotes

What is the main feature of all animals?

They are multicellular, contain a nucleus, no cell walls, no chloroplasts, feed on organic substances

What are the main features for plants?

They are multicellular, contain a nucleus, chloroplasts and cellulose cell walls

What are Vertebrates?

are all species of animals with a backbone and internal skeleton

What are Invertebrates?

don’t have the same structure as vertebrates but sometimes have an external skeleton

What is the binomial system

An internationally agreed system to scientifically name organisms using their genus and species

Are Plants and Animals Eukaryotic organisms?

Yes

What do Eukaryotic cells have?

Genetic material and a Nucleus

What are the 5 groups that vertebrates are divided into?

Mammals, Birds, Reptiles, Fish, Amphibians

What are the 4 types of Arthropods?

Myriapods, Insects, Arachnids, Crustaceans