Question

Choose the correct statements regarding Agrobacterium tumefaciens -
A. It is a gram positive round shaped bacterium
B. It is a gram negative rod shaped bacterium
C. It is a photosynthetic spiral bacterium
D. It is also known as 'Natural genetic Engineer'
E. It is capable of naturally transferring DNA into plant genome
Choose the correct answer from the options given below :

• A. A, B and C Only
• B. B, D and E Only
• C. B, C and D Only
• D. A, D and E Only

Hint:

Remember {Agrobacterium tumefaciens} for its main role: it's the "Natural Genetic Engineer" because it naturally injects a piece of its plasmid DNA into plant chromosomes. This makes it a perfect tool for creating GMOs.

Answer 1

The Correct Option is B

Step 1: Understanding the Concept:
The question requires identifying the correct characteristics of the bacterium Agrobacterium tumefaciens, a key organism in plant biotechnology.
Step 2: Detailed Explanation:
A. It is a gram positive round shaped bacterium. Incorrect. A. tumefaciens is Gram-negative and rod-shaped.
B. It is a gram negative rod shaped bacterium. Correct. It's a Gram-negative, motile, rod-shaped soil bacterium.
C. It is a photosynthetic spiral bacterium. Incorrect. It is neither photosynthetic nor spiral-shaped.
D. It is also known as 'Natural genetic Engineer'. Correct. This is due to its natural ability to transfer T-DNA from its Ti plasmid into a plant's genome.
E. It is capable of naturally transferring DNA into plant genome. Correct. This DNA transfer mechanism causes crown gall disease and makes it a valuable vector for creating transgenic plants.
Step 3: Final Answer:
The correct options are B, D, and E.