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Read the following statement and choose ...

Read the following statement and choose the correct option:
I. Agrobacterium tumefaciencs, a pathogen of several monocot plants, is able to deliver a piece of DNA known as "T-DNA".
II. The tumor inducing (Ti) plasmid of Agrobacterium tumefaciens has been modified into a cloning vector, which is more pathogenic to the plants.

A

Both `i` and ii are correct

B

`i` is correct, while ii is incorrect

C

`i` is incorrect, while ii is correct

D

Both I and ii are incorrect

Text Solution

AI Generated Solution

The correct Answer is:
To solve the question, we need to analyze the two statements provided about Agrobacterium tumefaciens and determine their correctness. ### Step 1: Analyze Statement I The first statement claims that "Agrobacterium tumefaciens, a pathogen of several monocot plants, is able to deliver a piece of DNA known as 'T-DNA'." - **Fact Check**: Agrobacterium tumefaciens is primarily known as a pathogen of dicot plants, not monocots. It is famous for causing crown gall disease in dicots by transferring T-DNA into the plant cells. Therefore, this statement is incorrect. ### Step 2: Analyze Statement II The second statement claims that "The tumor inducing (Ti) plasmid of Agrobacterium tumefaciens has been modified into a cloning vector, which is more pathogenic to the plants." - **Fact Check**: The Ti plasmid can indeed be modified into a cloning vector for genetic engineering purposes. However, when it is modified for cloning, it is designed to be non-pathogenic. The purpose of using the Ti plasmid as a cloning vector is to transfer genes into plants without causing disease. Thus, this statement is also incorrect. ### Conclusion Both statements are incorrect. Therefore, the correct option is that both statements are incorrect. ### Final Answer Both statements I and II are incorrect. ---
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