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Q.145 Botany ⭐ 360° Option Elimination Active
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NEET 2024 Botany Question 145 Solution

Topic: Morphology of Flowering Plants · Official NTA Booklet Code T1
NEET 2024 Botany Question 145: Stamen Cohesion (Adelphy) and Adhesion (Epiphylly)

Question

Match List I (Types of Stamens) with List II (Example). List I: A. Monoadelphous; B. Diadelphous; C. Polyadelphous; D. Epiphyllous. List II: I. Citrus; II. Pea; III. Lily; IV. China-rose. Choose the correct answer from the options given below:

✓
Verified Against NTA Final Answer Key
Option (3) : A-IV, B-II, C-I, D-III
📚 Morphology of Flowering Plants Easy
📋 Given Parameters & Problem Setup
List I (Stamen Arrangement) A: Monoadelphous; B: Diadelphous; C: Polyadelphous; D: Epiphyllous
List II (Plant Examples) I: Citrus; II: Pea; III: Lily; IV: China-rose
⚡

The 30-Second Exam Hall Shortcut: ⚡ Stamen Cohesion/Adhesion Mnemonic

⏱️ Save ~25 seconds

Monoadelphous = China-rose (IV); Diadelphous = Pea (9+1) (II); Polyadelphous = Citrus (I); Epiphyllous = Lily (attached to perianth) (III)! Match: A-IV, B-II, C-I, D-III!

1 A. Monoadelphous: stamens united into one bundle -> China-rose (IV).
2 B. Diadelphous: stamens united into two bundles -> Pea (9+1) (II).
3 C. Polyadelphous: stamens united into more than two bundles -> Citrus (I).
4 D. Epiphyllous: stamens attached to the perianth (tepals) -> Lily (III).
5 Matching order: A-IV, B-II, C-I, D-III -> Option (3) / C.
🛡️
Why You Can 100% Trust This Shortcut: NCERT Biology · Morphology of Flowering Plants (Androecium and Stamen Fusion)
📐

Step-by-Step Rigorous Workflow & Mathematical Proof

Step 1

Define Types of Stamen Cohesion

The stamens may be united into one bunch or one bundle (monoadelphous) as in China rose, or into two bundles (diadelphous) as in pea, or into more than two bundles (polyadelphous) as in citrus.

Step 2

Define Epiphylly Adhesion

When stamens are attached to the perianth, as in the flowers of lily, they are described as epiphyllous (in contrast to epipetalous when attached to petals, as in brinjal).

Step 3

Combine Mappings

A-IV, B-II, C-I, D-III correctly represents all conditions, matching Option (3).

⭐

360° Option Elimination Engine Key Feature

Diagnose every choice: Know exactly why the right option works and why distractors fail.

4-Option Deep Scan
1 (1)
✗ Incorrect
Verdict & Scientific Reason:

Mismatches Monoadelphous with Citrus and Polyadelphous with China-rose.

⚠️
Student Fallacy (Why candidates pick this trap): Mismatches Monoadelphous with Citrus and Polyadelphous with China-rose.
2 (2)
✗ Incorrect
Verdict & Scientific Reason:

Mismatches Monoadelphous with Lily.

⚠️
Student Fallacy (Why candidates pick this trap): Mismatches Monoadelphous with Lily.
3 (3)
✓ 100% Correct
Verdict & Scientific Reason:

Accurately pairs China-rose (monoadelphous), Pea (diadelphous), Citrus (polyadelphous), and Lily (epiphyllous).

💡
Why this is airtight: None.
4 (4)
✗ Incorrect
Verdict & Scientific Reason:

Mismatches Diadelphous with Citrus and Polyadelphous with Pea.

⚠️
Student Fallacy (Why candidates pick this trap): Mismatches Diadelphous with Citrus and Polyadelphous with Pea.
⚠️

NTA Trap Alert: Epipetalous vs Epiphyllous

Confusing epiphyllous (attached to perianth in Lily) with epipetalous (attached to petals in Brinjal).

🛡️ How to avoid the -1 mark: Lily lacks distinct petals/sepals (has perianth/tepals), so its stamens are epi-PHYLLOUS.
📖

Core NEET Syllabus Standard

Biology Core Botany · Morphology of Flowering Plants Standard Benchmark
Core Scientific Principle Tested:

"The stamens may be united into one bunch or one bundle (monoadelphous) as in china rose, or two bundles (diadelphous) as in pea, or into more than two bundles (polyadelphous) as in citrus... when attached to the perianth as in the flowers of lily they are epiphyllous."

Syllabus Focus: Stamen Cohesion (Adelphy) and Adhesion (Epiphylly)
✓ Core NEET UG Syllabus Anchor Syllabus & Academic Standards ↗

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