The Question is from neet-botany plant-growth-and-development , and it was created by the author D VINOD

Question

Which hormone plays a crucial role in metamorphosis in amphibians?

D VINOD · Accepted Answer

## CORE INFORMATION
✓ **Answer**: D
## CONCEPT FRAMEWORK
 **Primary Concept**: Amphibian metamorphosis and endocrine system
 **Related Topics**: Thyroid hormones, amphibian development, hormonal regulation
 **Prerequisites**: Basic understanding of hormones and their functions.
## SOLUTION PATHWAY
**Given Information**:
  The question asks about the hormone crucial for amphibian metamorphosis.
**Method & Steps**:
 1. Identify the hormone responsible for metamorphosis in amphibians.
  Reasoning: Metamorphosis is a complex process involving significant physical changes.  A specific hormone regulates these transformations.
  Formula/Rule:  None directly applicable; this is a knowledge-based question.
 2. Recall the role of thyroxine (T4) and triiodothyronine (T3).
  Working: Thyroxine, produced by the thyroid gland, is the primary hormone driving metamorphosis in amphibians. It triggers the resorption of the tail, development of limbs, and changes in the respiratory and digestive systems. 
  Key Point: While other hormones contribute to overall development, thyroxine is the key regulator of metamorphosis.
 3. Select the correct option.
  Result: Thyroxine (option D) is the correct answer.
  Verification:  Thyroxine's role in amphibian metamorphosis is well-established in biology.
 ## OPTION ANALYSIS
A :x: Growth Hormone: Growth hormone primarily stimulates growth and cell reproduction, but it's not the primary driver of metamorphic changes.
B :x: Insulin: Insulin regulates blood sugar levels; it's not directly involved in amphibian metamorphosis.
C :x: Glucagon: Glucagon also regulates blood sugar, and like insulin, it doesn't play a major role in amphibian metamorphosis.
D ✓: Thyroxine: Thyroxine is the crucial hormone that triggers and regulates the metamorphic changes in amphibians.
 ## LEARNING AIDS
 **Common Mistakes**:
  1.Confusing thyroxine with other hormones involved in growth and development: Remember that while growth hormone and other hormones contribute to overall development, thyroxine is specifically the key player in metamorphosis.
  2.Failing to recall the specific role of thyroxine in amphibians: This requires memorization of key biological facts.
 **Quick Tips**:
  1.Associate thyroxine with thyroid gland and its function in regulating metabolic processes, which are crucial for the dramatic changes during metamorphosis.
  2.Use mnemonics or flashcards to remember the key roles of different hormones.

D VINOD · Answer

Growth Hormone

D VINOD · Answer

Insulin

D VINOD · Answer

Glucagon

D VINOD · Answer

The correct Option is "Thyroxine"

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