Science Class 7 - Transportation In-Plants-And-Animals Notes

Transportation in Plants and Animals

Welcome to the chapter on Transportation in Plants and Animals for Class 7. In this chapter, you will learn how water, food, and other substances move inside plants and animals. By the end of this chapter, you will understand the importance of transportation for survival and growth!

Introduction

Transportation is the process by which water, food, and other materials are carried from one part of a living organism to another. Both plants and animals need transportation to survive, grow, and stay healthy.

Transportation in Plants

• Water and Minerals: Roots absorb water and minerals from the soil. These travel up through tubes called xylem to the leaves and other parts.
• Food: Leaves make food by photosynthesis. This food moves to other parts of the plant through tubes called phloem.
• Transpiration: Plants lose water from their leaves. This helps pull more water up from the roots.

Transportation in Animals

• Blood: Blood carries food, water, oxygen, and waste in animals.
• Heart: The heart pumps blood to all parts of the body.
• Blood Vessels: Tubes called arteries and veins carry blood.
• Oxygen Transport: Blood carries oxygen from the lungs to all cells.
• Waste Removal: Blood carries waste to organs like kidneys for removal.

Why is Transportation Important?

• It helps every part of the body get what it needs to live and grow.
• It removes waste from the body.
• It keeps plants and animals healthy.

Fun Activity: Observe Transportation!

Place a white flower in colored water. Watch how the color moves up the stem—this is transportation in plants!

Summary

• Transportation moves water, food, and other materials in plants and animals.
• Plants use xylem and phloem for transportation.
• Animals use blood, heart, and blood vessels for transportation.

Practice Questions

1. What is the function of xylem in plants?
2. How does food move in plants?
3. Name the organ that pumps blood in animals.
4. Why is transportation important?
5. What carries oxygen in animal bodies?

Challenge Yourself

• Draw and label the transportation system in a plant and an animal.
• Explain how waste is removed from the body in animals.

Did You Know?

• The human body has about 100,000 kilometers of blood vessels!
• Plants can move water up to great heights, like in tall trees.

Glossary

• Xylem: Tubes that carry water and minerals in plants.
• Phloem: Tubes that carry food in plants.
• Blood Vessel: Tubes that carry blood in animals.
• Heart: Organ that pumps blood.

Answers to Practice Questions

1. Xylem carries water and minerals from roots to other parts of the plant.
2. Food moves through phloem.
3. Heart.
4. It helps every part get what it needs and removes waste.
5. Blood.

---

Transportation keeps plants and animals alive and healthy. Observe how it works around you!