🌟 Class
7 Science Curiosity – Chapter 10 Notes
🌿 Life
Processes in Plants | Amresh Academy
📘
Introduction
🌱 1.
Plant Growth
📈 How
Plants Grow:
- New
leaves 🌿
- New
branches 🌳
- Increase
in height 📏
- Thickening
of stems
⚡
Essential Factors:
- 💧 Water
→
absorbed by roots
- ☀️ Sunlight →
provides energy
- 🧪 Nutrients
→
minerals from soil
🌞 2.
Photosynthesis
📌
Definition:
👉
Process by which plants make food (glucose) using sunlight
🔑
Requirements:
- ☀️ Sunlight
- 🍃
Chlorophyll
- 🌬️
Carbon dioxide (CO₂)
- 💧
Water
📦
Products:
- 🍬 Glucose
→
energy / stored as starch
- 🌬️ Oxygen
→
released into air
📐 Word
Equation:
👉 Carbon
dioxide + Water → (Sunlight + Chlorophyll) →
Glucose + Oxygen
🌿 Main
Site:
👉 Leaves
(food factories)
🌍
Importance:
- Provides
food 🌱
- Releases
oxygen 🌬️
🍃 3.
Role of Leaves
- Broad
& flat → capture sunlight ☀️
- Contain
chlorophyll
- Store
food as starch
🌬️ 4. Gas
Exchange
🔍
Stomata:
👉 Tiny
pores on leaves
⚡
Functions:
- CO₂ enters for photosynthesis
- O₂ released
- Helps
in respiration
🚰 5.
Transport in Plants
🌿 Xylem:
🌿
Phloem:
📌
Importance:
👉
Ensures proper distribution of nutrients
🔥 6.
Respiration in Plants
📌
Definition:
👉
Breakdown of glucose to release energy
⚡
Requirements:
- Glucose
- Oxygen
📦
Products:
- Carbon
dioxide
- Water
- Energy
📐
Equation:
👉
Glucose + Oxygen → Carbon dioxide + Water +
Energy
🧠 Key
Point:
👉 Occurs
day and night
🌍 7.
Importance of Plant Processes
🌱
Photosynthesis:
- Produces
food
- Releases
oxygen
🔥
Respiration:
- Provides
energy
🚰
Transport:
- Distributes
water & food
🌬️ Gas
Exchange:
- Maintains
balance of gases
⚖️
Balance in Nature:
👉
Maintains CO₂ and O₂ levels
📌 Final
Summary
👉 Plants
perform important processes:
- Photosynthesis
🌞
- Respiration
🔥
- Transport
🚰
- Gas
exchange 🌬️
👉 These
processes help in:
- Plant
survival 🌱
- Environmental
balance 🌍
✨ Perfect
for revision + exams + concept clarity 🚀
0 Comments