Question

1. which organelle is present only in a plant cell?

○ ribosome
○ cell membrane
○ chloroplast
○ nucleus

Explanation:

Ribosomes are present in both plant and animal cells as they are involved in protein synthesis. The cell membrane is a common feature of all cells (plant, animal, prokaryotic etc.) as it acts as a barrier. The nucleus is present in eukaryotic cells (both plant and animal cells are eukaryotic). Chloroplasts are the organelles that carry out photosynthesis and are only present in plant cells (some algae also have chloroplasts but in the context of comparing plant and animal cells, chloroplast is unique to plant cells among the given options).

Answer:

chloroplast