Section1. Characteristics Of Living Organisms Flashcards
What is movement?
An action by an organism or part of an organism causing a change of position or place.
What is respiration?
The chemical reactions that break down nutrient molecules in living cells to release energy for metabolism.
What is sensitivity?
The ability to detect or sense stimuli in the internal or external environment and to make appropriate responses.
What is growth?
A permanent increase in size and dry mass by an increase in cell number or cell size or both.
What is reproduction?
The processes that make more of the same kind of organism.
What is excretion?
The removal from organisms of toxic materials, the waste products of metabolism and substances in excess of requirements.
What is nutrition?
The taking in of materials for energy, growth and development; plants require light, carbon dioxide, water and ions; animals need organic compounds, ions and usually need water.
What is the sequence of classification?
Kingdom, Phylum, Class, Order, Family, Genus, Species
What are the five kingdoms?
Animals, Plants, Fungi, Protoctists, Prokaryotes
What are the main features of all animals?
They are multicellular, their cells contain a nucleus but no cell walls or chloroplasts, and they feed on organic substances made by other living things.
What are the main features of all plants?
They are multicellular, their cells contain a nucleus, chloroplasts, and cellulose cell walls, and they all feed by photosynthesis.
What are the main features of all fungi?
Usually multicellular, cells have nuclei and cell walls not made from cellulose, and they do not photosynthesize but feed by saprophytic or parasitic nutrition.
What are the main features of all Protoctists?
Most are unicellular but some are multicellular, all have a nucleus, some may have cell walls and chloroplasts, meaning some protoctists photosynthesise and some feed on organic substances made by other living things.
What are the main features of all Prokaryotes?
Often unicellular, cells have cell walls (not made of cellulose) and cytoplasm but no nucleus or mitochondria.
