Fruit Formation, Polyembryony & Apomixis (NEET 2026): Easy Notes, Tricks & PYQs

This part is small… but very scoring.

👉 Direct NEET questions come from:

False fruits

Parthenocarpy

Polyembryony

Apomixis

👉 Plus: real-life applications = high conceptual questions

🌱 Formation of Fruit & Seed
After fertilization:

👉 Ovule → Seed

👉 Ovary → Fruit

🌼 Key Concept

Seed is the final product of sexual reproduction

Fruit and seed formation occur simultaneously

🍎 Types of Fruits

🔸 1. True Fruit

Develops from ovary only

Examples:

Mango

Tomato

🔸 2. False Fruit (Pseudocarp)

Develops from: 👉 Ovary + other floral parts

Examples:

Apple

Pear

Cashew

Strawberry

👉 ⭐ Very important for NEET

🍌 Parthenocarpy

👉 Formation of fruit without fertilization

Features:

Fruits are seedless

Can be natural or induced

Example:

Banana

🌱 Embryogeny (Quick Recall)

👉 Zygote (2n) → Embryo (2n)

In dicots:

Cellular development

Endoscopic type

Embryo grows towards chalazal end

🌟 Polyembryony

🔹 Definition

👉 Formation of more than one embryo in a single seed

🔬 Discovery

Discovered by Leeuwenhoek in Citrus

🔸 Key Idea

In citrus:

One embryo → zygotic

Others → from:

Nucellus

Integuments

👉 Called: Adventive embryony

🌿 Example

👉 In Allium odorum:

Embryos may develop from:

Synergids

Antipodals

Integuments

🔹 Types

✅ True Polyembryony

Multiple embryos in same embryo sac

✅ False Polyembryony

Embryos from different embryo sacs

🧠 Quick Trick

👉 Poly = Many embryos in one seed

🌟 Apomixis (Very Important)

🔹 Definition

👉 Formation of seeds without meiosis and fertilization

🔥 NCERT Line

👉 “Apomixis mimics sexual reproduction but is actually asexual”

🔹 Related Term

👉 Amphimixis

= Normal sexual reproduction (meiosis + fertilization)

🔸 Types of Apomixis

1️⃣ Adventive Embryony

Embryo from:

Nucellus / integuments

👉 Example: Citrus

2️⃣ Apospory

Embryo sac from somatic cell (no meiosis)

3️⃣ Diplospory

Embryo sac from MMC without meiosis

🌾 Importance of Apomixis

👉 Used in agriculture:

✔ Maintains hybrid characters

✔ No need to buy seeds again

✔ High yield stability

🎯 NEET Important Points

✔ False fruit → Apple

✔ Parthenocarpy → Banana

✔ Polyembryony → Citrus

✔ Apomixis → No meiosis + no fertilization

✔ Adventive embryony → Nucellus

❌ Common Mistakes

Confusing apomixis with vegetative reproduction

Forgetting citrus example

Mixing true vs false fruit

🚀 Final Takeaway

👉 Fruit = Ovary

👉 Seed = Ovule

👉 Polyembryony = Many embryos

👉 Apomixis = Seed without fertilization

Thank you so much.

Regards,

Himansu

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