Question

Match List I with List II
List I:
A. Stylate
B. Filiform
C. Moniliform
D. Geniculate
List II:
I. Grasshopper
II. Horsefly
III. Ant
IV. Termite
Choose the correct answer from the options given below:

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

Hint:

Associate the shape with common names: filiform means thread-like (grasshopper), moniliform means bead-like (termite), and geniculate means elbowed (ant).

Answer 1

The Correct Option is B

Step 1: Understanding the Concept:
Antennae are paired, segmented sensory organs located on the head of insects.
They exhibit significant morphological modifications across different orders, which are used as key diagnostic features in insect taxonomy.

Step 2: Detailed Explanation:
Let us correlate each specialized antennal type with its representative insect family:
1. Stylate Antennae (A): In this type, the terminal antennal segment bears a long, pointed, style-like process at its tip.
This specialized tactile and sensory configuration is characteristic of brachyceran Diptera, such as the Horsefly (II).
Therefore, A matches with II.
2. Filiform Antennae (B): These are thread-like antennae where all segments are uniform in size and cylindrical, with no distinct swellings.
This basic, highly flexible sensory structure is typically found in orthopterans like the Grasshopper (I).
Therefore, B matches with I.
3. Moniliform Antennae (C): These are bead-like antennae where the individual segments are spherical or rounded, resembling a string of beads.
This structure is a diagnostic feature of the order Isoptera, represented by the Termite (IV).
Therefore, C matches with IV.
4. Geniculate Antennae (D): These are elbowed antennae characterized by a long basal segment (scape) followed by a sharp bend, with the remaining segments (flagellum) forming a whip-like structure.
This elbowed arrangement is common in hymenopterans, particularly the Ant (III).
Therefore, D matches with III.

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