charactersitics__Classification_and_Feature_of_organims

Movement

An action by an organism or part of an organism causing a change of position or place.

Respiration

The chemical reactions that break down nutrient molecules in living cells to release energy for metabolism.

Sensitivity

The ability to detect or sense stimuli in the internal or external environment and to make appropriate responses.

Growth

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

Reproduction

The processes that make more of the same kind of organism.

Excretion

The removal from organisms of toxic materials, the waste products of metabolism, and substances in excess of requirements.

Nutrition

The taking in of materials for energy, growth, and development in organisms.

Binomial System

A system of naming organisms where the scientific name consists of two parts: the genus and the species.

Species

A group of organisms that can reproduce to produce fertile offspring.

Dichotomous Key

A tool used to identify organisms based on a series of questions about their features.

The Five Kingdoms

The classification of living things into five groups: Animals, Plants, Fungi, Protoctists, and Prokaryotes.

Vertebrates

Organisms with a backbone, classified into five classes.

Invertebrates

Organisms that do not possess a backbone.

Arthropods

Invertebrates with jointed legs, classified into further groups based on characteristics.

Protoctists

Mostly unicellular organisms with a nucleus, some photosynthesize and some feed on organic materials.

Prokaryotes

Often unicellular organisms, such as bacteria, that have no nucleus.

Monocotyledons

Plants with flowers in multiples of 3 and leaves that have parallel veins.

Dicotyledons

Plants with flowers in multiples of 4 or 5 and leaves with a reticulated vein pattern.

Viruses

Entities that are not considered living things because they do not carry out the seven life processes by themselves.