Question

an organelle found in plant cells and some members of the kingdom protista, but not in animal cells, is
a centriole.
a ribosome.
a cell membrane.
a lysosome.
a chloroplast.

Explanation:

• Centrioles are present in animal cells and some protists, not plant cells.
• Ribosomes are found in all eukaryotic (plant, animal, protist) and prokaryotic cells.
• Cell membranes are a universal structure for all cells.
• Lysosomes are present in animal cells, and some plant/protist cells may have similar structures but they are not exclusive to plants/protists.
• Chloroplasts are organelles for photosynthesis, found in plant cells and photosynthetic protists, but absent in animal cells.

Answer:

a chloroplast.