Q.108 Botany ⭐ 360° Option Elimination Active

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NEET 2023 Botany Question 108 Solution

Topic: Sexual Reproduction in Flowering Plants · Official NTA Booklet Code G5

Question

Large, colourful, fragrant flowers with nectar are seen in:

(1)wind pollinated plants
(2)insect pollinated plants
(3)bird pollinated plants
(4)bat pollinated plants

✓

Verified Against NTA Final Answer Key

Option (2) : insect pollinated plants

📚 Sexual Reproduction in Flowering Plants Easy

📋 Given Parameters & Problem Setup

Floral Traits Large, colourful, fragrant, rich in nectar

Agent Category Pollination syndrome

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The 30-Second Exam Hall Shortcut: ⚡ Floral Sensory Syndrome: Color + Fragrance + Nectar = Insects

⏱️ Save ~20 seconds

Insects rely on visual cues (bright color), olfactory cues (fragrance), and energetic rewards (nectar). Wind plants lack fragrance/nectar; birds have poor smell; bats visit dull nocturnal flowers. Therefore, large colorful fragrant flowers are insect-pollinated!

1 Wind-pollinated (anemophilous) flowers are small, non-colourful, without fragrance or nectar.

2 Bird-pollinated (ornithophilous) flowers are brightly coloured and nectar-rich, but typically scentless (birds lack sense of smell).

3 Bat-pollinated (chiropterophilous) flowers are dull-coloured with musky/fermented odor.

4 Insect-pollinated (entomophilous) flowers feature large, colourful petals, strong fragrance, and nectar.

5 Match Option (2) insect pollinated plants.

🛡️

Why You Can 100% Trust This Shortcut: Canonical NCERT Sexual Reproduction in Flowering Plants pollination syndromes.

📐

Step-by-Step Rigorous Workflow & Mathematical Proof

Step 1

Syndromes of Biotic Pollination

Flowers have evolved specific morphological and physiological suites of traits (pollination syndromes) to attract target biotic vectors:

\begin{aligned} \text{\textbf{Entomophily (Insects):}} & \quad \text{Large, brightly coloured, fragrant, nectar-rich, sticky pollen} \\[4pt] \text{Ornithophily (Birds):} & \quad \text{Vibrant red/yellow, copious dilute nectar, scentless} \\[4pt] \text{Chiropterophily (Bats):} & \quad \text{Large, dull/white, nocturnal opening, strong fermented scent} \\[4pt] \text{Anemophily (Wind):} & \quad \text{Inconspicuous, light non-sticky pollen, feathery stigma, no nectar/scent} \end{aligned}

Step 2

Verbatim NCERT Association

NCERT explicitly states: "Majority of insect-pollinated flowers are large, colourful, fragrant and rich in nectar. When the flowers are small, a number of flowers are clustered into an inflorescence to make them conspicuous."

Step 3

Floral Rewards

Nectar and pollen grains constitute the canonical floral rewards provided to insect visitors for facilitating pollen transfer.

⭐

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:

Wind pollinated flowers are tiny, dull green/brown, lacking fragrance, petals, and nectar.

⚠️

Student Fallacy (Why candidates pick this trap): Ignoring the energetic waste of fragrance and petals for abiotic vectors.

2 2

✓ 100% Correct

Verdict & Scientific Reason:

Exact match with NCERT: entomophilous blossoms are large, brightly coloured, fragrant, and secrete nectar.

💡

Why this is airtight: None; textbook verbatim.

3 3

✗ Incorrect

Verdict & Scientific Reason:

Birds have poorly developed olfactory systems; ornithophilous flowers are bright and nectar-rich but virtually odorless.

⚠️

Student Fallacy (Why candidates pick this trap): Assuming birds are attracted to sweet floral fragrance.

4 4

✗ Incorrect

Verdict & Scientific Reason:

Bat pollinated flowers are dull or whitish (nocturnal blooming) with heavy, fermenting/musty odors rather than sweet floral fragrance.

⚠️

Student Fallacy (Why candidates pick this trap): Failing to recognize that bats do not need bright daytime coloration.

⚠️

NTA Trap Alert: Bird vs. Insect Pollination Fragrance Distinction

Students often group bird and insect flowers together because both are colorful and offer nectar. The discriminating trait is fragrance: bird flowers are scentless, insect flowers are fragrant.

🛡️ How to avoid the -1 mark: Color + Nectar + Fragrance = Insect. Color + Nectar - Fragrance = Bird.

📖

Core NEET Syllabus Standard

NCERT Biology · Sexual Reproduction in Flowering Plants Standard Benchmark

Core Scientific Principle Tested:

"Majority of insect-pollinated flowers are large, colourful, fragrant and rich in nectar to attract pollinators like bees and butterflies."

Syllabus Focus: Pollination Agents

✓ Core NEET UG Syllabus Anchor Syllabus & Academic Standards ↗

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NEET 2023 Botany Question 108 Solution

Question

The 30-Second Exam Hall Shortcut: ⚡ Floral Sensory Syndrome: Color + Fragrance + Nectar = Insects

Step-by-Step Rigorous Workflow & Mathematical Proof

Syndromes of Biotic Pollination

Verbatim NCERT Association

Floral Rewards

360° Option Elimination Engine Key Feature

NTA Trap Alert: Bird vs. Insect Pollination Fragrance Distinction

Core NEET Syllabus Standard

Ready to attempt under real exam pressure?

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