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Plants and animals

The nature and variety of living organisms · Characteristics and variety of living organisms · note 2 of 5

Plants and animalsSpec 1.2

In short

Plants and animals are multicellular eukaryotic organisms, so their cells have a nucleus. Plant cells contain chloroplasts, have cellulose cell walls, carry out photosynthesis and store carbohydrate as starch or sucrose. Animal cells have no chloroplasts or cell walls, animals often store carbohydrate as glycogen, and they usually have nervous co-ordination and can move from place to place.

Plants and animals are both eukaryotic organisms: their cells have a nucleus. Both groups are multicellular, which means their bodies are made of many cells.

Plants and animals compared
FeaturePlantsAnimals
Number of cellsMulticellularMulticellular
ChloroplastsCells contain chloroplastsCells do not contain chloroplasts
PhotosynthesisAble to carry out photosynthesisNot able to carry out photosynthesis
Cell wallCellulose cell wallsNo cell walls
Carbohydrate storeStarch or sucroseOften glycogen
Co-ordination and movementNo nervous co-ordinationUsually have nervous co-ordination and can move from one place to another
Examples of plants
Flowering plants, such as a cereal (for example maize) and a herbaceous legume (for example peas or beans).
Examples of animals
Mammals (for example humans) and insects (for example housefly and mosquito).
Exam tip:

A common 'compare' mark is the carbohydrate store: plants store starch or sucrose, animals store glycogen. Learn both.

Written and checked against the Edexcel IGCSE Science Double Award (4SD0) specification · Updated October 2026

Frequently asked questions

What are the eight characteristics of living organisms?

The eight characteristics are nutrition, respiration, excretion, response to surroundings, movement, control of internal conditions, reproduction, and growth and development. All living organisms show every one of them, although in different ways. A plant, for example, moves by growing towards light, while an animal can move from place to place.

What is the difference between excretion and egestion?

Excretion is removing the waste products made by chemical reactions in cells, such as carbon dioxide. Egestion is removing undigested food from the gut. Only excretion is one of the characteristics of living organisms, so in an exam do not use the two words as if they mean the same thing.

What is the difference between prokaryotic and eukaryotic cells?

Prokaryotic cells, such as bacteria, have no nucleus: their DNA is a circular chromosome free in the cytoplasm, often with extra rings called plasmids. Eukaryotic cells, found in plants, animals, fungi and protoctists, have their DNA enclosed in a nucleus. Bacteria are also microscopic and single-celled, while many eukaryotes are multicellular.

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