Question

Match List I with List II
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Choose the correct answer from the options given below:

• A. A - IV, B - I, C - III, D - II
• B. A - II, B - III, C - IV, D - I
• C. A - III, B - I, C - IV, D - II
• D. A - II, B - IV, C - I, D - III

Hint:

- Devine \(\rightarrow\) Phytophthora against milkweed vine (Morrenia).
- Collego \(\rightarrow\) Colletotrichum against jointvetch (Aeschynomene).
These are the two most famous historical bio-herbicides.

Answer 1

The Correct Option is D

Step 1: Understanding the Concept:
Bio-herbicides (mycoherbicides) are biological control agents derived from plant pathogens (typically fungi).
They are applied to target weed populations in a similar way to chemical herbicides.
Detailed Explanation:
Let us match each commercial bio-herbicide with its target weed species:
- A. Devine: Devine was the first commercial mycoherbicide.
It contains a formulation of the oomycete Phytophthora palmivora, which is used to control strangler vine (milkweed vine).
This matches with II. Morrenia odorata.
- B. Collego: Collego is a registered mycoherbicide containing the fungus Colletotrichum gloeosporioides f. sp. aeschynomene.
It is used to selectively control northern jointvetch in rice and soybean fields.
This matches with IV. Aeschynomene.
- C. Bipolaris: Bipolaris sorokiniana is a fungal pathogen used as a bio-herbicide to control Johnsongrass.
This matches with I. Sorghum halepense.
- D. Lubao-2: Lubao-2 is a commercial mycoherbicide containing Colletotrichum gloeosporioides.
It is used to control the parasitic weed dodder in agricultural fields.
This matches with III. Cuscuta.
Combining these pairs yields the sequence: \[ \text{A - II}, \ \text{B - IV}, \ \text{C - I}, \ \text{D - III} \] This matches Option (D).

Step 2: Final Answer:
The correct matching sequence is A - II, B - IV, C - I, D - III.