Level of organisation: Practice Questions

Which of the following describes a level of organisation that consists of a group of different tissues working together to perform a specific function?

Which of the following sequences correctly shows the levels of organisation in a multicellular organism from the simplest to the most complex?

Which statement best explains the importance of cell differentiation in the development of a multicellular organism?

Which level of organisation is defined as a group of different tissues working together to carry out a particular function?

The digestive system consists of several structures, including the stomach and the pancreas, working together. At which level of organisation is the stomach classified?

Define the term tissue as it relates to the levels of organisation within a multicellular organism.

Multicellular organisms are built from smaller components that work together to perform complex functions.
(a) Define the term tissue and provide one specific example of a tissue found in the human circulatory system. (2)
(b) Arrange the following levels of organisation in order from the simplest to the most complex: organ, system, cell, tissue. (1)
(c) A plant leaf is composed of multiple layers such as the epidermis and mesophyll. Explain why the leaf itself is classified as an organ rather than a tissue. (1)

Living organisms are organized into different levels of complexity to carry out life functions efficiently.
(a) Define the term system in the context of levels of organisation and provide one specific example found in the human body. (2)
(b) Arrange the following components in order of size, starting from the smallest and ending with the largest: liver, hepatocyte (liver cell), digestive system, nucleus. (2)