Based on my analysis of the plant cell diagram, I can now answer the two questions:
1. Which structure is found in a plant cell but not in an animal cell? Circle the correct answer.
- chloroplast
- cell membrane
- ribosome
The correct answer is
chloroplast. Chloroplasts are specialized organelles found only in plant cells and some other photosynthetic organisms. They contain chlorophyll and are responsible for photosynthesis, the process by which plants convert sunlight into chemical energy. Animal cells do not have chloroplasts because they obtain energy by consuming other organisms rather than producing their own food through photosynthesis.
2. What is the main function of vacuoles?
The main function of vacuoles in plant cells is to maintain turgor pressure against the cell wall, which helps the plant maintain its structure and rigidity. Vacuoles also serve as storage compartments for water, ions, nutrients, and waste products. In mature plant cells, the central vacuole can occupy up to 90% of the cell's volume and plays a crucial role in regulating the cell's internal environment.
Additionally, I've identified the structures that need to be labeled from the word bank:
- Cell wall: The rigid outer layer of the plant cell (though it appears to be mislabeled as "cell membrane" in the diagram)
- Chloroplast: The small, disc-shaped organelles responsible for photosynthesis
- Mitochondrion: The bean-shaped organelles responsible for cellular respiration and energy production
- Nucleus: The large central organelle containing the cell's genetic material
- Ribosome: The small dot-like structures involved in protein synthesis
Parent Tip: Review the logic above to help your child master the concept of animal cell worksheet answer key.
