Select the correct option based on statements below:
Assertion (A): | Plasmids are extrachromosomal DNA. |
Reason (R): | Plasmids are found in bacteria and are useful in genetic engineering. |
1. | Both (A) and (R) are true and (R) is the correct explanation of (A). |
2. | Both (A) and (R) are true but (R) is not the correct explanation of (A). |
3. | (A) is true but (R) is false. |
4. | Both (A) and (R) are false. |
Select the mismatch:
Column I | Column II | |
1. | Gas vacuoles | Green bacteria Cells |
2. | Large central vacuoles | Animal cells |
3. | Protists | Eukaryotes |
4. | Methanogens | Prokaryotes |
Read the statements and select the correct option.
(A) – Mesosome helps in cell wall formation in prokaryotes.
(B) – They are infolding of plasma membrane.
(1) Both A and B are correct
(2) Both A and B are incorrect
(3) Only A is correct
(4) Only B is correct