Question

Which of these are prokaryotes?

a.Amoeba and paramoecium

b. Hydra and human beings

c. All plants and animals

d. Bacteria and blue green algae​

Answer 1

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• Bacteria and blue green algae [Option D]

Prokaryotic cells are found in kingdom Monera : Bacteria, blue green algae and Mycoplasma.

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Prokaryotic cells :

• Proparyotes : Pro = Primitive; Karyon = nucleus.

• Prokaryotes do not have well defined nucleus.

• Chromosome is single in prokaryotic cell.

• Cell organelles such as Mitochondria, Endoplacmic Reticulum and Golgi body are absent.

• Centrioles are absent in prokaryotic cell.

• Their size is about 1-10 um (smaller in size).

• Streaming movement of cytoplasm does not occurs in prokaryotic cell.

• 70 S types of ribosomes are found in prokaryotic cell.

• Nuclear membrane is absent.

• circular and double standard DNA are found in prokaryotic cell.