Which of the following organelles would you expect to find in a plant cell diagram but NOT in an animal cell diagram?

Question

BlackTom AI · Accepted Answer

Chloroplasts and a rigid cell wall are found in plant cells but not in animal cells, so a is correct.

Relevant knowledge points:
- Chloroplasts contain chlorophyll and carry out photosynthesis (light → chemical energy); they are characteristic of plant (and algal) cells, absent from animal cells.
- The plant cell wall, made primarily of cellulose, provides structural support and a defined shape; animal cells lack a cellulose cell wall and instead have a flexible plasma membrane and extracellular matrix.
- Organelles such as mitochondria, ribosomes, nucleus, Golgi apparatus, and smooth endoplasmic reticulum are common to both plant and animal cells (though relative abundance and specific roles may vary).
- Lysosomes are more typical of animal cells; plant cells usually use the central vacuole for storage and some hydrolytic functions.

Step-by-step reasoning:
1. Examine option a: “Chloroplast and Cell Wall.” Both organelles are classic plant-specific structures. Chloroplasts enable photosynthesis and are not present in animal cells; cell walls (cellulose) give plants rigidity and are absent in animals. Therefore option a describes organelles expected in a plant cell diagram but not an animal cell diagram.
2. Examine option b: “Smooth ER and Lysosome.” Smooth endoplasmic reticulum is present in both plant and animal cells. Lysosomes are typical of animal cells; plant cells have vacuoles that can perform similar digestive roles. This pair is not uniquely plant-specific.
3. Examine option c: “Mitochondria and Ribosomes.” Both are universal organelles found in nearly all eukaryotic cells, so this cannot distinguish plant from animal cells.
4. Examine option d: “Nucleus and Golgi Apparatus.” Both are also present in both plant and animal cells.

Why the correct answer is correct: Chloroplasts and cell walls are distinctive features of plant cells. Other choices list organelles that are shared by or more typical of animal cells.

Conclusion: The correct choice is a. Chloroplast and Cell Wall, which matches the provided answer.

Which of the following organelles would you expect to find in a plant cell diagram but NOT in an animal cell diagram?单项选择题

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