📘 Q.2 IAS Prelims 2024 — Environment & Ecology (Insect Diversity)🧷 Authentic Classroom Explanation by IAS Monk
📌 The Question:
The organisms “Cicada, Froghopper and Pond skater” are:
(a) Birds
(b) Fish
(c) Insects
(d) Reptiles
✅ Correct Answer: (c) Insects
🔍 Classroom Explanation:
- Cicada 🦗
Cicadas belong to the superfamily Cicadoidea under the order Hemiptera.
They are well known for:- Long life cycles (some species: 13 or 17 years underground)
- Loud mating calls
- Clear membranous wings
- Froghopper (Spittlebug)
Froghoppers belong to the superfamily Cercopoidea (Hemiptera).
Key traits:- Exceptional jumping ability
- Nymphs produce frothy “spittle” for protection
- Plant sap feeders
- Pond skater (Water strider)
Pond skaters are insects under family Gerridae (Hemiptera).
They:- Walk on water using surface tension
- Are predatory/scavenging insects
- Are classic examples of biomechanical adaptation
👉 All three organisms are insects, specifically under the order Hemiptera (true bugs).
🧠 Curiosity Raiser:
How can pond skaters walk on water without sinking?
👉 Their legs are covered with water-repellent micro-hairs, maximizing surface tension.
📚 Enrich Notes (Prelims Edge):
- Hemiptera = piercing–sucking mouthparts
- Froghoppers hold the record for highest jump relative to body size
- Cicadas are ecological indicators of soil and forest health
🕊️ IAS Monk Whisper:
“Evolution whispers its genius through insects — tiny bodies, mighty innovations.”
