MyCompetitiveExams Logo MyCompetitiveExams
MyCompetitiveExams Logo MyCompetitiveExams
Search 1,140+ Questions
Chapters, formulas, speed tricks
→
⚡ Brahmastra NEET 2027
720 MARKS

Dynamic 180-question full-length simulator mixed dynamically from all 6 years for 2027 & 2026 aspirants.

Launch Brahmastra 2027 Test →
Start Practice →
100% Free · No Login Required
Q.58 Zoology ⭐ 360° Option Elimination Active
Vault ↗

NEET 2020 Zoology Question 58 Solution

Topic: Morphology of Flowering Plants · Official NTA Booklet Code E1
NEET 2020 Zoology Question 58: Ovary Position: Perigynous Flower and Half Inferior Ovary

Question

The ovary is half inferior in:

  1. (1)Brinjal
  2. (2)Mustard
  3. (3)Sunflower
  4. (4)Plum
✓
Verified Against NTA Final Answer Key
Option (4) : Plum
📚 Morphology of Flowering Plants Easy
📋 Given Parameters & Problem Setup
Ovary Position Half inferior (Perigynous condition)
Candidate Genera Brinjal, Mustard, Sunflower, Plum
⚡

The 30-Second Exam Hall Shortcut: ⚡ "Perigynous = Half Inferior = Plum, Rose, Peach!"

⏱️ 20 seconds

Mustard, China rose, and Brinjal have Superior ovary (Hypogynous). Guava, Cucumber, and ray florets of Sunflower have Inferior ovary (Epigynous). Plum, Rose, and Peach have Half Inferior ovary (Perigynous)! Mark Plum (Option 4) in 5 seconds.

1 Hypogynous (Superior ovary): Mustard, China rose, Brinjal.
2 Epigynous (Inferior ovary): Guava, Cucumber, ray florets of Sunflower.
3 Perigynous (Half inferior ovary): Plum, Rose, Peach.
4 Select Option (4) Plum.
🛡️
Why You Can 100% Trust This Shortcut: NCERT Biology · Morphology of Flowering Plants (The Flower: Position of Floral Parts)
📐

Step-by-Step Rigorous Workflow & Mathematical Proof

Step 1

Classify Types of Flowers by Floral Insertion

Based on the position of calyx, corolla, and androecium in respect of the ovary on thalamus, flowers are described as hypogynous, perigynous, and epigynous.

Step 2

Define Perigynous Flowers

If gynoecium is situated in the centre and other parts of the flower are located on the rim of the thalamus almost at the same level, it is called perigynous. The ovary here is said to be half inferior.

Step 3

Review NCERT Examples for Perigynous Flowers

The canonical NCERT examples of perigynous flowers with half inferior ovaries are Plum, Rose, and Peach.

Step 4

Evaluate Other Candidate Genera

Brinjal and Mustard have hypogynous flowers with superior ovaries. Sunflower ray florets have epigynous flowers with inferior ovaries.

⭐

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 A
✗ Incorrect
Verdict & Scientific Reason:

Incorrect; Brinjal (Solanaceae) possesses a hypogynous flower with a superior ovary.

⚠️
Student Fallacy (Why candidates pick this trap): Confusing superior ovary of Solanaceae with half inferior.
2 B
✗ Incorrect
Verdict & Scientific Reason:

Incorrect; Mustard (Brassicaceae) has a hypogynous flower with a superior ovary.

⚠️
Student Fallacy (Why candidates pick this trap): Mixing up hypogynous and perigynous examples.
3 C
✗ Incorrect
Verdict & Scientific Reason:

Incorrect; ray florets of Sunflower have an epigynous flower with a completely inferior ovary.

⚠️
Student Fallacy (Why candidates pick this trap): Confusing inferior ovary of Asteraceae with half-inferior ovary.
4 D
✓ 100% Correct
Verdict & Scientific Reason:

Factually exact; Plum has a perigynous flower where the ovary is half inferior.

💡
Why this is airtight: None; standard botanical classification.
⚠️

NTA Trap Alert: Mnemonic for Ovary Positions

Hypogynous (Superior): "M-C-B" (Mustard, China rose, Brinjal). Perigynous (Half Inferior): "P-R-P" (Plum, Rose, Peach). Epigynous (Inferior): "G-C-S" (Guava, Cucumber, Sunflower ray florets).

🛡️ How to avoid the -1 mark: Memorize the trio: "Plum, Rose, Peach = Half inferior"!
📖

Core NEET Syllabus Standard

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

""

Syllabus Focus: Ovary Position: Perigynous Flower and Half Inferior Ovary
✓ Core NEET UG Syllabus Anchor Syllabus & Academic Standards ↗

Ready to attempt under real exam pressure?

Test your speed and accuracy in the authentic 180-minute timed NTA simulator.

Launch NEET 2020 CBT Test →

Spotted a mistake in this solution? Report an error (support@mycompetitiveexams.com)

⚖️ Legal & Fair Dealing Notice: Sourced from publicly released NEET 2020 question papers and NEET answer keys for private study, research, and non-commercial educational practice under Fair Dealing (Section 52(1)(a) of the Indian Copyright Act, 1957). Not affiliated with or endorsed by NTA or NMC.

Solve 4 NEET Questions a Day — One per Subject

Cover all 1,140 official NEET questions in 285 days at your own pace. Progress is saved on your device. No login needed.