Questions and Answers
Which organ is not found in animals?
Roots
What structures are responsible for photosynthesis in the leaf?
Chloroplasts
What term describes a set of organs that work together to carry out the same function?
Organ System
What type of cell is found in the palisade layer of a leaf?
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Which of the following best describes the function of both the palisade and spongy layers in a leaf?
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What is a characteristic feature of the spongy layer in a leaf?
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Study Notes
Organs and Organ Systems
- The bodies of plants and animals are composed of many different parts, called organs.
- Examples of organs in humans include brain, heart, and muscles.
- Examples of organs in plants include leaves, roots, and flowers.
Organ Structure
- Each organ is composed of several different kinds of tissue working together.
- For example, the brain contains neurons and other types of cells.
- A plant root contains root hair cells and other types of cells.
Organ Systems
- A set of organs that work together to carry out the same function is called an organ system.
- Organs work together to perform specific functions.
Leaf Structure
Leaf Layers
- The palisade layer is made up of tightly packed cells.
- The spongy layer has cells with air spaces between them.
- Both layers contain chloroplasts, organelles responsible for photosynthesis.
- The leaf contains several different kinds of tissue.
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