The correct option is
C. Absence of large vacuoles.
Detailed Explanation:
- Understanding Animal Cells:
- Animal cells are eukaryotic cells that are characterized by their lack of a rigid cell wall, which is a feature of plant cells. Instead, they have a flexible plasma membrane that allows for a variety of shapes and sizes.
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One of the key differences between plant and animal cells is the presence and size of vacuoles.
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Vacuoles in Animal Cells:
- In animal cells, vacuoles are generally small and numerous. They serve various functions, including storage of substances, waste disposal, and maintaining internal pressure (turgor).
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In contrast, plant cells typically have one or more large central vacuoles that can occupy a significant portion of the cell's volume. These large vacuoles are important for maintaining turgor pressure, storing nutrients, and degrading waste products.
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Why Option C is Correct:
- The statement "Absence of large vacuoles" accurately describes animal cells. They do not have large vacuoles like those found in plant cells. Instead, they have smaller vacuoles that do not play the same role in maintaining cell structure and pressure.
Why the Other Options are Incorrect:
- Option A: Presence of chloroplast:
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Chloroplasts are organelles found in plant cells and some protists that are responsible for photosynthesis. Animal cells do not have chloroplasts because they do not perform photosynthesis. Therefore, this option is incorrect.
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Option B: Possession of cellulose cell wall:
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Cellulose cell walls are a defining feature of plant cells, providing structural support and protection. Animal cells lack a cell wall; instead, they have a flexible plasma membrane. Thus, this option is also incorrect.
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Option D: Presence of large vacuoles:
- As previously mentioned, animal cells do not have large vacuoles. This characteristic is typical of plant cells, where the large central vacuole plays a crucial role in maintaining cell structure and storing substances. Therefore, this option is incorrect as well.
Summary of Key Points:
- Animal cells lack large vacuoles, which distinguishes them from plant cells.
- They have small vacuoles that serve various functions but do not contribute to structural integrity like the large vacuoles in plant cells.
- Animal cells do not contain chloroplasts or a cellulose cell wall, which are features specific to plant cells.
This understanding of the differences between plant and animal cells is crucial for grasping basic biological concepts and will aid in further studies in cell biology and related fields.