The Circulatory System and Transport in Plants

Introduction

Efficient transport systems are vital for all living organisms. In humans, the circulatory system moves nutrients, oxygen, and waste products. In plants, specialised tissues like xylem and phloem ensure survival.

This article will cover:

1. The human circulatory system.
2. Transport in plants using xylem and phloem.
3. The importance of these systems for life.

1. The Human Circulatory System

The Heart

• Pumps blood through the body in a double circulatory system.
  • Right side: Pumps deoxygenated blood to the lungs.
  • Left side: Pumps oxygenated blood to the body.

Blood Vessels

1. Arteries: Carry blood away from the heart under high pressure.
2. Veins: Return blood to the heart, containing valves to prevent backflow.
3. Capillaries: Exchange substances between blood and tissues.

2. Transport in Plants

Xylem

• Transports water and minerals from roots to leaves.
• Process: Transpiration—water evaporates from leaves, pulling more water upwards.

Phloem

• Carries sugars and nutrients produced in photosynthesis to the rest of the plant.
• Process: Translocation—movement of food molecules.

Conclusion

The circulatory system in humans and transport systems in plants are vital for survival. Understanding these systems helps explain how organisms obtain and distribute essential resources.

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