Question

2. Which of the following characteristics correctly describe a prokaryotic cell? 1. It has undefined nuclear region called nucleoid. II. Single chromosome III. Chlorophyll is found in plastids IV. Mitochondria absent (A) I, II, III and IV (B) I and III (C)I, II and IV (D) I, III and IV​

Answer 1

Answer:

B

Prokaryotes have a nucleoid, eukaryotes have a nucleus.

Prokaryotic cells are primitive cells. They do not possess many membrane bound organelles as mitochondria, lysosomes etc. They also do not have well defined membrane bound nucleus. Nuclear material of a prokaryotic cell consists of a single chromosome which is in direct contact with cytoplasm. Here, the undefined nuclear region in the cytoplasm is called as nucleoid, i.e., there is no nuclear membrane.

Eukaryotes possess well defined nucleus and membrane bound organelles as mitochondria, Golgi complex, etc. Nucleus is bound with double membrane in eukaryotic cell in which most of the genetic material is present.

Hence the correct option is B.