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B
Eukaryotic cells
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C
Single cells
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D
Multi cells
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Solution
The correct option is A
Prokaryotic cells
The correct option is A.
Explanation of correct answer:-
Prokaryotic cells have genetic material in the form of circular DNA molecules suspended in the cytoplasm itself, there is no nuclear membrane enclosing it.
Prokaryotic cells lack any membrane-bound organelles like mitochondria, ER, Golgi body, true nucleus, etc.
Prokaryotic cells were usually seen in the organisms of Kingdom Monera like bacteria, nostoc, and cyano-bacteria.
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
Eukaryotic cells contain a nuclear membrane that surrounds the genetic material to form the nucleus.
Eukaryotic cells contain many membrane-bound organelles like mitochondria, ER, Golgi-body, lysosomes, vacuoles, etc.
Option C
Unicellular organisms are made up of only one cell (single cell) that carries out all of the functions needed by the organisms.
A single-celled organism includes bacteria, protists, and yeast.
Option D
Multicellular organisms are those that have many different specialized cells that perform different specific functions.
It includes animals, some fungi, and plants.
Final answer: Cells that lack nuclear membrane are prokaryotic cells.