Answer :
1. A nucleus and chloroplast are found in all eukaryotic cells: This statement is incorrect. While the nucleus is indeed found in all eukaryotic cells, chloroplasts are only found in plant cells and some algae cells. They are not present in all eukaryotic cells.
2. A nucleus is found in all prokaryotic cells, and some prokaryotic cells have chloroplast: This statement is incorrect. Prokaryotic cells, such as bacteria, do not have a nucleus. They have a nucleoid region where the genetic material is found, but it is not enclosed within a membrane-bound nucleus. Additionally, chloroplasts are not found in prokaryotic cells.
Therefore, the correct statement would be:
A nucleus is found in all eukaryotic cells, and chloroplast is found in plant cells but not in animal cells.
2. A nucleus is found in all prokaryotic cells, and some prokaryotic cells have chloroplast: This statement is incorrect. Prokaryotic cells, such as bacteria, do not have a nucleus. They have a nucleoid region where the genetic material is found, but it is not enclosed within a membrane-bound nucleus. Additionally, chloroplasts are not found in prokaryotic cells.
Therefore, the correct statement would be:
A nucleus is found in all eukaryotic cells, and chloroplast is found in plant cells but not in animal cells.