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Q.88 Zoology ⭐ 360° Option Elimination Active
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NEET 2020 Zoology Question 88 Solution

Topic: Sexual Reproduction in Flowering Plants · Official NTA Booklet Code E1
NEET 2020 Zoology Question 88: Anatomy of Angiosperm Ovule: Hilum as the Junction of Ovule Body and Funicle

Question

The body of the ovule is fused within the funicle at:

  1. (1)Hilum
  2. (2)Micropyle
  3. (3)Nucellus
  4. (4)Chalaza
✓
Verified Against NTA Final Answer Key
Option (1) : Hilum
📚 Sexual Reproduction in Flowering Plants Easy
📋 Given Parameters & Problem Setup
Botanical Structure Anatropous angiosperm ovule (Megasporangium)
Anatomical Region Point where the body of the ovule fuses with the funicle
Question Objective Identify the junction name
⚡

The 30-Second Exam Hall Shortcut: ⚡ "Body of Ovule Fuses with Funicle at HILUM!"

⏱️ 20 seconds

The stalk attaching the ovule to the placenta is the Funicle. The region where the main body of the ovule fuses with the funicle is called the HILUM. Micropyle is the apical pore; Chalaza is the basal region; Nucellus is the central nutritive tissue. Mark Hilum (Option 1) in 5 seconds!

1 Stalk of ovule = Funicle.
2 Junction representing fusion between ovule body and funicle = Hilum.
3 Apical opening for pollen tube entry = Micropyle.
4 Basal part opposite to micropyle = Chalaza.
5 Select Option (1) Hilum.
🛡️
Why You Can 100% Trust This Shortcut: NCERT Biology · Sexual Reproduction in Flowering Plants (The Megasporangium: Ovule Structure)
📐

Step-by-Step Rigorous Workflow & Mathematical Proof

Step 1

Review Ovule Anatomy in NCERT

An ovule is a small structure attached to the placenta by means of a stalk called funicle.

Step 2

Define the Hilum

NCERT states verbatim: "The body of the ovule fuses with funicle in the region called hilum. Thus, hilum represents the junction between ovule and funicle."

Step 3

Examine Other Named Regions

- Micropyle: Small pore at the tip of the integuments where integuments do not encircle the nucellus. - Chalaza: Represents the basal part of the ovule opposite the micropylar end. - Nucellus: The central mass of parenchymatous nutritive cells enclosed within the integuments.

Step 4

Conclude Hilum

The point of attachment and fusion between the ovule body and funicle is unequivocally the Hilum.

⭐

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
✓ 100% Correct
Verdict & Scientific Reason:

Factually exact; the hilum is the anatomical scar/region where the ovule body fuses with its funicular stalk.

💡
Why this is airtight: None; verbatim NCERT textbook definition.
2 B
✗ Incorrect
Verdict & Scientific Reason:

Incorrect; micropyle is the narrow opening left by the integuments at the apex of the ovule for pollen tube entry.

⚠️
Student Fallacy (Why candidates pick this trap): Confusing the entry pore with the stalk junction.
3 C
✗ Incorrect
Verdict & Scientific Reason:

Incorrect; nucellus is the central mass of diploid nutritive tissue enclosing the female gametophyte (embryo sac).

⚠️
Student Fallacy (Why candidates pick this trap): Confusing internal nutritive tissue with the external stalk junction.
4 D
✗ Incorrect
Verdict & Scientific Reason:

Incorrect; chalaza represents the basal region of the ovule opposite the micropyle.

⚠️
Student Fallacy (Why candidates pick this trap): Confusing the basal pole of the ovule with the funicular junction.
⚠️

NTA Trap Alert: Hilum in Seed vs Hilum in Ovule

In an ovule, the hilum is the junction between ovule body and funicle. In a mature seed, the hilum remains as a visible scar on the seed coat marking where it was attached to the fruit wall via the funicle.

🛡️ How to avoid the -1 mark: Remember: Stalk = Funicle; Scar/Junction = Hilum!
📖

Core NEET Syllabus Standard

Zoology · Sexual Reproduction in Flowering Plants Standard Benchmark
Core Scientific Principle Tested:

""

Syllabus Focus: Anatomy of Angiosperm Ovule: Hilum as the Junction of Ovule Body and Funicle
✓ Core NEET UG Syllabus Anchor Syllabus & Academic Standards ↗

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