Question

Match List I with List II
List I:
A. Pratylenchus
B. Trichodorus
C. Anguina tritici
D. Atylenchus
List II:
I. Root lesions
II. Setae
III. Ectoparasite
IV. Seed-borne
Choose the correct answer from the options given below:

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

Hint:

To remember this match: Pratylenchus is the root lesion nematode, Trichodorus is an ectoparasite, and Anguina tritici is a seed-borne pathogen.

Answer 1

The Correct Option is B

Step 1: Understanding the Concept:
Plant-parasitic nematodes exhibit diverse lifestyles and morphological adaptations, and cause specific symptoms in host plants.

Step 2: Detailed Explanation:
Let us analyze each nematode genus and its corresponding characteristic:
1. Pratylenchus (A): Commonly known as the root lesion nematode, this migratory endoparasite feeds on the root cortex.
Its feeding and migration cause necrotic root lesions (I) that can serve as entry points for secondary pathogens.
Therefore, A matches with I.
2. Trichodorus (B): Commonly known as the stubby root nematode, this is a migratory ectoparasite (III) that feeds on root tips.
Therefore, B matches with III.
3. Anguina tritici (C): Commonly known as the wheat seed gall nematode, this is a seed-borne (IV) parasite.
The infective juveniles are carried inside seed galls, which contaminate harvested grain.
Therefore, C matches with IV.
4. Atylenchus (D): This is a specialized tylenchid nematode genus characterized by the presence of prominent cuticular setae (II) or setae-like structures on its head.
Therefore, D matches with II.

Step 3: Final Answer:
Combining these individual matches yields the sequence: A-I, B-III, C-IV, D-II.