Biology Levels of Organisation

Flashcards summarizing key biological concepts related to levels of organization in living organisms.

Homo sapiens

Species name for modern humans, belonging to the genus Homo.

Organelle

A minute structure within a eukaryotic cell that has a particular function.

Tissue

A collection of cells of similar structure organized to carry out one or more particular functions.

Organ system

A collection of organs that work together to perform a complex function.

Nucleus

The most prominent organelle in a cell, responsible for storing genetic material.

Xylem

Vascular tissue in plants responsible for water and mineral transport.

Phloem

Vascular tissue in plants responsible for transporting sugars and nutrients.

Esophagus

A muscular tube that connects the throat to the stomach.

Bronchioles

Small air passages in the lungs that branch off from the bronchi.

Alveoli

Tiny air sacs in the lungs where gas exchange occurs.

Function

The way something's constituent parts interact with one another; how something works.

Structure

The arrangement and organization of something; how something is made up.

Organ

A part of the body of an animal or plant that performs a particular job