Question

Cells which lack nuclear membrane are

• A. Prokaryotic cells
• B. Eukaryotic cells
• C. Single cells
• D. Multi cells

Answer 1

The correct option is A

Prokaryotic cells

The correct option is A.

Explanation of correct answer:-

1. Prokaryotic cells have genetic material in the form of circular DNA molecules suspended in the cytoplasm itself, there is no nuclear membrane enclosing it.
2. Prokaryotic cells lack any membrane-bound organelles like mitochondria, ER, Golgi body, true nucleus, etc.
3. Prokaryotic cells were usually seen in the organisms of Kingdom Monera like bacteria, nostoc, and cyano-bacteria.
4. Prokaryotic cells do not have a true nucleus i.e. genetic material is not enclosed by any nuclear membrane.

Explanation of incorrect answers:-

Option B

1. Eukaryotic cells contain a nuclear membrane that surrounds the genetic material to form the nucleus.
2. Eukaryotic cells contain many membrane-bound organelles like mitochondria, ER, Golgi-body, lysosomes, vacuoles, etc.

Option C

1. Unicellular organisms are made up of only one cell (single cell) that carries out all of the functions needed by the organisms.
2. A single-celled organism includes bacteria, protists, and yeast.

Option D

1. Multicellular organisms are those that have many different specialized cells that perform different specific functions.
2. It includes animals, some fungi, and plants.

Final answer: Cells that lack nuclear membrane are prokaryotic cells.