Arrange insect life-cycle stages in correct chronological order Stages: (i) Pupa (ii) Larva (iii) Moth (iv) Eggs

Introduction / Context:
Biology-based sequencing questions test understanding of natural life cycles. For holometabolous insects (e.g., moths), there is a well-known ordered progression from egg to adult via larval and pupal stages.

Given Data / Assumptions:

• Stages provided: Eggs, Larva, Pupa, Moth.
• We must produce the biologically correct chronological order.

Concept / Approach:
The moth life cycle follows the complete metamorphosis model: Egg → Larva (caterpillar) → Pupa (chrysalis/cocoon) → Adult (moth). Any departure from this order breaks developmental dependencies.

Step-by-Step Solution:
1) The cycle begins with Eggs (iv).2) Eggs hatch into Larva (ii).3) The larva pupates to become Pupa (i).4) The adult emerges as Moth (iii).

Verification / Alternative check:
This order aligns with standard entomological references for Lepidoptera and many other insects exhibiting complete metamorphosis.

Why Other Options Are Wrong:

• Any sequence that places Pupa before Larva or the Adult (Moth) before Pupa contradicts developmental biology.

Common Pitfalls:
Confusing incomplete metamorphosis terms (e.g., nymph) with complete metamorphosis stages, or swapping larva and pupa.

Final Answer:
(iv), (ii), (i), (iii)