Question

Which of the following is correct:

(a) Cells of all living organisms have a nucleus.
(b) Both animal and plant cells have a well defined cell wall.
(c) In prokaryotes, there are no membrane bound organelles.
(d) Cells are formed de novo from abiotic materials.​

Answer 1

• (c) In prokaryotes, there are no membrane bound organelles.

Explanation :

(a) Cells of all living organisms have a nucleus:

False, Cells of all living organisms does not have a nucleus. For example: Prokaryotes are the single celled organisms, with no nucleus and no membrane bound organelles.

(b) Both animal and plant cells have a well defined cell wall.

False, Both animal and plant cells does not have a well defined cell wall. The cell wall is only present in plant cell, but absent in the animal cell.

(c) In prokaryotes, there are no membrane bound organelles

True, Prokaryotes are the single celled organisms, with no nucleus and membrane bound organelles.

(d) Cells are formed de novo from abiotic materials

False, No cells are formed from abiotic materials, the cells arise from pre existing cells.

Answer 2

(c) In prokaryotes, there are no membrane bound organelles.

Step-by-step explanation:

The correct answer is (c). In prokaryotes, there are no membrane-bound organelles. This means that prokaryotic cells do not have a nucleus, as well as other organelles such as mitochondria, chloroplasts, and the endoplasmic reticulum.

`\textsf{Option (a)}` is incorrect because not all living organisms have a nucleus. For example, prokaryotic cells do not have a nucleus.

`\textsf{Option (b)}`is incorrect because only plant cells have a well-defined cell wall. Animal cells do not have a cell wall.

`\textsf{Option (d)}` is incorrect because cells are not formed de novo from abiotic materials. Cells can only be formed from pre-existing cells.

Therefore, the correct answer is C.