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Question 47

Which of the following statements are correct regarding the general difference between plant and animal cells ?
1. Plant cells have cellulose cell walls whilst animal cells do not.
2. Plant cells do not have plasma membrane unlike animal cells which do.
3. Mature plant cell has one large vacuole whilst animal cell has many small vacuoles.
Select the correct answer using the code given below:

AOptions

A) 1 and 2 only

B) 2 and 3 only

C) 1 and 3 only

D) 1, 2 and 3

BSolution

Let's examine the general differences between plant and animal cells:

1. Plant cells have cellulose cell walls whilst animal cells do not. This statement is correct. Plant cells are characterized by the presence of a rigid cell wall, primarily composed of cellulose, located outside the plasma membrane. This cell wall provides structural support and protection. Animal cells, on the other hand, lack a cell wall.

2. Plant cells do not have plasma membrane unlike animal cells which do. This statement is incorrect. Both plant cells and animal cells possess a plasma membrane. The plasma membrane is a fundamental component of all living cells, regulating the passage of substances into and out of the cell. In plant cells, the plasma membrane is located just inside the cell wall.

3. Mature plant cell has one large vacuole whilst animal cell has many small vacuoles. This statement is correct. Mature plant cells typically have a single, large central vacuole that can occupy a significant portion (up to 80-90%) of the cell volume. This large vacuole is crucial for maintaining turgor pressure, storing water, nutrients, and waste products. Animal cells, if they have vacuoles at all, usually have multiple small, temporary vacuoles.

Therefore, statements 1 and 3 are correct.

CStrategy

For questions on basic biology, particularly cell structure, ensure a clear understanding of the distinguishing features of different cell types. Be cautious about absolute statements (like 'do not have' for plasma membrane) and recall fundamental components present in all eukaryotic cells.

DSyllabus Analysis

This question falls under General Science (Biology), specifically fundamental concepts of cell biology and the distinguishing features of plant and animal cells.

EQuestion Analysis

Easy. This is a basic concept taught in introductory biology, making it a straightforward question.