Rainbow 🌈 Mind Map
Seeds
Learn the importance, germination conditions, structure, types and dispersal of seeds through simple notes and visual cards.
A colourful revision mind map about seeds.
🌱 Introduction to Seeds
A seed is the part of a flowering plant that can grow into a new plant. Seeds are also an important source of food. Grains such as rice, wheat and maize are seeds that people eat.
Many grains, pulses and nuts are seeds.
A seed can germinate and develop into a seedling.
Seeds help plants reproduce and continue their species.
💧 Conditions for Seed Germination
Germination is the process by which a seed begins to grow into a new plant. Most seeds need the following three conditions:
Water softens the seed coat and activates growth.
Oxygen is needed to release energy from stored food.
A suitable temperature supports the chemical reactions needed for growth.
🔍 Structure of a Seed
A seed contains a tiny developing plant and stored food, protected by an outer covering.
Main parts found inside a typical seed.
🌰 Types of Seeds
Monocot Seed
A monocot seed has one cotyledon.
Examples: maize, rice and wheat.
Dicot Seed
A dicot seed has two cotyledons.
Examples: bean, pea and gram.
🪁 Seed Dispersal
Seed dispersal is the movement of seeds away from the parent plant. It reduces competition for light, water, space and nutrients, and it helps plants grow in new places.
By Wind
By Water
By Animals
By Explosion
- Wind: Light or winged seeds, such as cotton and maple, can be carried by air.
- Water: Floating fruits or seeds, such as coconut, travel through water.
- Animals: Seeds may stick to fur or be carried after animals eat fruits.
- Explosion: Some dry fruits burst open and scatter their seeds, as in pea and balsam.
🧠 Quick Knowledge Check
❓ Frequently Asked Questions
What is a seed?
A seed is a plant structure containing an embryo, stored food and a protective seed coat. Under suitable conditions, it can grow into a new plant.
What conditions are needed for seed germination?
Most seeds need water, oxygen from air and a suitable temperature for germination.
What are the main parts of a seed?
The main parts include the seed coat, cotyledon or cotyledons, plumule and radicle.
What is the difference between monocot and dicot seeds?
A monocot seed has one cotyledon, while a dicot seed has two cotyledons.
Why is seed dispersal important?
Seed dispersal reduces overcrowding and competition near the parent plant and helps plants spread to new places.
How are seeds dispersed?
Seeds may be dispersed by wind, water, animals or the bursting of fruits.
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