Levels of Organization Plants & Animals

1. The smallest units of life that make up all living things are -

• tissues
• cells
• organs
• organ systems

2.The stomach, small intestine, and large intestine are all organs. When they work together to process food, they form a functional unit known as -

• organism
• organ system
• tissue
• cell

3. A collection of cells with similar functions-

• organ
• tissue
• organ system
• organism

4.Which of the following correctly orders the organization in plants and animals from least to most complex?

• organism --> organ--> organ system--> tissue--> cell
• cell--> organ-->tissue--> organ system--> organism
• cell --> tissue--> organ--> organ system--> organism
• organism--> organ system--> organ--> tissue--> cell

5. According to cell theory, which of the following is a correct statement about fungi and animals?

• they reproduce in the same way
• they are all made of cells
• they undergo photosynthesis
• the can quickly evolve

6. Years ago people believed that organisms began life spontaneously. Which part of the cell theory contradicts their beliefs?

• all organisms are composed of one or more cells
• all cells come from pre-existing cells by cell reproduction (except the original cell)
• the cell is the basic unit of structure and function in living organisms
• all cells have the ability to react to outside stimuli

7. What level of organization is represented in this picture?

• cell
• tissue
• organ
• organ system
• organism

8. Which of the following is NOT part of the Cell Theory?

• All organisms are composed of cells - multi and single
• All cells are made from atoms during chemical reactions
• All cells come from pre-existing cells by cell reproduction (except the original cell)
• Cells are the basic building block of structure and function of life

10. What type of organism makes its own food, usually by the process of photosynthesis?

• heterotoph
• consumer
• autotroph
• decomposer

11. An organism that has a membrane bound nucleus with genetic material, organelles, and is multicellular is _______.

• prokaryotic
• eukaryotic