Q.138 Botany ⭐ 360° Option Elimination Active
NEET 2024 Botany Question 138 Solution
Topic: Sexual Reproduction in Flowering Plants · Official NTA Booklet Code T1
Question
Identify the correct description about the given figure:
✓
Verified Against NTA Final Answer Key
Option (3) : Wind pollinated plant inflorescence showing flowers with well exposed stamens
📚 Sexual Reproduction in Flowering Plants Easy
📋 Given Parameters & Problem Setup
Figure Figure 2.10 (b) from NCERT Biology Sexual Reproduction in Flowering Plants
Structure Dense, brush-like inflorescence with projecting filaments and stamens
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⏱️ Save ~25 seconds The 30-Second Exam Hall Shortcut: ⚡ NCERT Diagram Figure 2.10 Recognition
The figure illustrates a wind-pollinated plant inflorescence featuring compact flowers with well-exposed stamens to easily disperse pollen into air currents!
1 Recognize the classic diagram from NCERT Sexual Reproduction in Flowering Plants:
2 - Caption in NCERT reads: "A wind-pollinated plant showing compact infloresence and well-exposed stamens".
3 - Stamens protrude outwards so pollen grains can be swept away easily by wind currents.
4 Matches Option (3) / C directly!
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Why You Can 100% Trust This Shortcut: NCERT Biology · Sexual Reproduction in Flowering Plants (Wind Pollination Adaptations)
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Step-by-Step Rigorous Workflow & Mathematical Proof
Step 1
Analyze Structural Features in the Figure
The figure displays a spike-like compact inflorescence where numerous flowers are closely aggregated. Long filaments project out from the axis, exposing stamens to the surrounding air currents.
Step 2
Review Adaptations of Anemophilous Flowers
Wind pollination requires that pollen grains are light and non-sticky so that they can be transported in wind currents. They often possess well-exposed stamens so that the pollens are easily dispersed into wind currents, and large feathery stigmas to easily trap airborne pollen grains.
Step 3
Select Matching Description
Option (3) provides the exact descriptive caption from NCERT Biology.
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4-Option Deep Scan
360° Option Elimination Engine Key Feature
Diagnose every choice: Know exactly why the right option works and why distractors fail.
1 (1)
✗ Incorrect Verdict & Scientific Reason:
Cleistogamous flowers do not open at all, whereas this inflorescence shows highly exposed reproductive organs.
⚠️
Student Fallacy (Why candidates pick this trap): Cleistogamous flowers do not open at all, whereas this inflorescence shows highly exposed reproductive organs.
2 (2)
✗ Incorrect Verdict & Scientific Reason:
Well-exposed stamens in wind-pollinated plants are adapted for anemophilous cross-pollination, not obligate autogamy.
⚠️
Student Fallacy (Why candidates pick this trap): Well-exposed stamens in wind-pollinated plants are adapted for anemophilous cross-pollination, not obligate autogamy.
3 (3)
✓ 100% Correct Verdict & Scientific Reason:
Directly reproduces the NCERT caption and morphological description for wind pollination.
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Why this is airtight: None.
4 (4)
✗ Incorrect Verdict & Scientific Reason:
Mucilaginous coverings protect pollen in submerged hydrophilous plants (e.g., Zostera), not terrestrial wind-pollinated tassels.
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Student Fallacy (Why candidates pick this trap): Mucilaginous coverings protect pollen in submerged hydrophilous plants (e.g., Zostera), not terrestrial wind-pollinated tassels.
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NTA Trap Alert: Autogamy Assumption in Dense Spikes
Assuming clustered spike flowers must be self-pollinating.
🛡️ How to avoid the -1 mark: Compact spikes with projecting stamens (like corn cob tassels) are classic anemophilous adaptations for cross-pollination.
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Core NEET Syllabus Standard
Biology Core Botany · Sexual Reproduction in Flowering Plants Standard Benchmark
Core Scientific Principle Tested:
"Wind pollination also requires that the pollen grains are light and non-sticky so that they can be transported in wind currents. They often possess well-exposed stamens so that the pollens are easily dispersed into wind currents (Figure 2.10b)."
Syllabus Focus: Anemophily (Wind Pollination): Inflorescence and Exposed Stamens
✓ Core NEET UG Syllabus Anchor Syllabus & Academic Standards ↗
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