TRANSPORTATION IN ANIMALS AND PLANTS

UNDERSTANDING HOW NUTRIENTS & GASES MOVE!

Introduction

Every living organism requires a system to transport essential substances like nutrients, water, oxygen, and waste. In animals, this system is known as the circulatory system, while in plants, it is the vascular system.

Transportation in Animals

1. The Circulatory System

The circulatory system in animals consists of the heart, blood vessels, and blood.

Heart:

• The heart is a muscular organ that pumps blood throughout the body.
• It has four chambers in humans:
  • Two atria (upper chambers).
  • Two ventricles (lower chambers).

Blood:

Blood is the fluid that transports substances. It has three components:

1. Red Blood Cells (RBCs): Carry oxygen using a pigment called hemoglobin.
2. White Blood Cells (WBCs): Fight infections.
3. Platelets: Help in clotting blood.

Blood Vessels:

• Arteries: Carry oxygen-rich blood away from the heart.
• Veins: Carry oxygen-poor blood back to the heart.
• Capillaries: Tiny vessels where exchange of substances occurs.

2. The Excretory System

The excretory system removes waste products from the body.

Kidneys:

• Filter blood to remove excess water, salts, and urea, forming urine.

Other Organs:

• Lungs: Remove carbon dioxide.
• Skin: Removes salts and water through sweat.

3. The Lymphatic System

The lymphatic system helps in transporting excess fluid back to the blood and plays a role in immunity.

• Lymph: A clear fluid that carries white blood cells and nutrients.
• Lymph Nodes: Filter harmful substances.

Transportation in Plants

1. The Vascular System

Plants use xylem and phloem for transportation.

Xylem:

• Transports water and minerals from roots to other parts of the plant.
• Movement is unidirectional (only upward).

Phloem:

• Transports food (sugar) made in leaves to the rest of the plant.
• Movement is bidirectional (upward and downward).

2. Transpiration

• Transpiration is the process of water loss as vapor from leaves through stomata.
• It helps in:
  • Cooling the plant.
  • Pulling water upward through the plant.

3. Absorption by Roots

Roots absorb water and minerals from the soil.

• Root Hairs: Increase the surface area for absorption.
• Water moves into roots by a process called osmosis.

Differences Between Transportation in Animals and Plants

Important Terms

1. Hemoglobin: The oxygen-carrying pigment in RBCs.
2. Stomata: Tiny pores on leaves for gas exchange and water loss.
3. Osmosis: Movement of water through a semi-permeable membrane.
4. Transpiration: Loss of water vapor from leaves.

Examples for Better Understanding

1. Circulation in Humans:
   • Blood carries oxygen from the lungs to all body parts and removes carbon dioxide.
2. Plant Transport:
   • When you water a plant, the water travels from the roots to the leaves via xylem.
3. Real-Life Example:
   • After exercise, you sweat to remove excess salts and water.

Fun Activity

Demonstrate Transpiration

1. Take a potted plant and cover one of its leaves with a plastic bag.
2. Leave it in sunlight for a few hours.
3. Observe water droplets inside the bag – that’s transpiration!

Practice Questions

1. What are the main components of blood?
2. How does water travel in plants?
3. What role do stomata play in plants?
4. Explain the process of transpiration with an example.
5. Differentiate between arteries and veins.

Summary

Transportation is a vital process in both plants and animals, ensuring that nutrients, water, oxygen, and waste are efficiently moved. While animals have a circulatory system powered by the heart, plants rely on their vascular system and processes like transpiration to stay healthy.

📝 Multiple Choice Questions

1. The transport system in animals is called:
A) Digestive system
B) Circulatory system
C) Nervous system
D) Respiratory system

2. The main organ that pumps blood is:
A) Brain
B) Liver
C) Heart
D) Kidney

3. The human heart has:
A) 2 chambers
B) 3 chambers
C) 4 chambers
D) 5 chambers

4. Upper chambers of the heart are called:
A) Ventricles
B) Atria
C) Valves
D) Arteries

5. Blood is a:
A) Solid
B) Liquid tissue
C) Gas
D) Organ

6. RBCs carry:
A) Carbon dioxide
B) Oxygen
C) Nitrogen
D) Water

7. The pigment in RBCs is:
A) Chlorophyll
B) Hemoglobin
C) Melanin
D) Insulin

8. WBCs help in:
A) Digestion
B) Immunity
C) Respiration
D) Circulation

9. Platelets help in:
A) Oxygen transport
B) Digestion
C) Clotting
D) Breathing

10. Arteries carry blood:
A) Towards heart
B) Away from heart
C) Only to lungs
D) Only to brain

11. Veins carry blood:
A) Away from heart
B) Towards heart
C) Only oxygenated
D) Only nutrients

12. Capillaries are:
A) Large vessels
B) Tiny vessels
C) Air sacs
D) Nerves

13. Exchange of substances occurs in:
A) Arteries
B) Veins
C) Capillaries
D) Heart

14. Kidneys help in:
A) Digestion
B) Respiration
C) Excretion
D) Circulation

15. Kidneys remove:
A) Oxygen
B) Urea
C) Glucose
D) Vitamins

16. Urine is formed in:
A) Lungs
B) Liver
C) Kidneys
D) Skin

17. Lungs remove:
A) Oxygen
B) Carbon dioxide
C) Nitrogen
D) Water

18. Skin removes waste in form of:
A) Urine
B) Sweat
C) Blood
D) Gas

19. Lymph is a:
A) Red fluid
B) Yellow fluid
C) Colorless fluid
D) Blue fluid

20. Lymph helps in:
A) Digestion
B) Immunity
C) Breathing
D) Movement

21. Plants transport water through:
A) Phloem
B) Xylem
C) Roots
D) Leaves

22. Xylem transports:
A) Food
B) Water and minerals
C) Oxygen
D) Carbon dioxide

23. Movement in xylem is:
A) Bidirectional
B) Downward only
C) Upward only
D) Circular

24. Phloem transports:
A) Water
B) Minerals
C) Food
D) Oxygen

25. Movement in phloem is:
A) One direction
B) Upward only
C) Bidirectional
D) Circular

26. Transpiration is:
A) Food formation
B) Water loss from leaves
C) Gas exchange
D) Root absorption

27. Transpiration occurs through:
A) Roots
B) Stem
C) Stomata
D) Flowers

28. Stomata are found on:
A) Roots
B) Leaves
C) Stem
D) Flowers

29. Roots absorb water by:
A) Diffusion
B) Osmosis
C) Respiration
D) Circulation

30. Root hairs increase:
A) Length
B) Surface area
C) Weight
D) Height

31. Osmosis is movement of:
A) Food
B) Air
C) Water
D) Minerals

32. Transpiration helps in:
A) Cooling plant
B) Heating plant
C) Digestion
D) Growth only

33. Blood vessels include:
A) Heart and lungs
B) Arteries, veins, capillaries
C) Brain and nerves
D) Kidneys

34. Which carries oxygen-rich blood?
A) Veins
B) Arteries
C) Capillaries
D) Lymph

35. Which carries oxygen-poor blood?
A) Arteries
B) Veins
C) Capillaries
D) Lungs

36. The function of lymph nodes is to:
A) Pump blood
B) Filter harmful substances
C) Produce urine
D) Digest food

37. Circulatory system transports:
A) Food only
B) Oxygen only
C) Nutrients, gases, waste
D) Water only

38. In plants, food is made in:
A) Roots
B) Stem
C) Leaves
D) Flowers

39. Food is transported from leaves by:
A) Xylem
B) Phloem
C) Roots
D) Stomata

40. Transpiration creates:
A) Push force
B) Pull force
C) Heat
D) Pressure

41. Which is NOT part of circulatory system?
A) Heart
B) Blood
C) Lungs
D) Blood vessels

42. Which is NOT part of plant transport system?
A) Xylem
B) Phloem
C) Stomata
D) Arteries

43. Sweat contains:
A) Oxygen
B) Salt and water
C) Sugar
D) Blood

44. Blood helps in:
A) Transport only
B) Defense only
C) Clotting only
D) All of these

45. Water moves upward in plants due to:
A) Gravity
B) Transpiration pull
C) Digestion
D) Respiration

46. Which part increases absorption in roots?
A) Stem
B) Root hairs
C) Leaves
D) Flowers

47. Which system helps in immunity?
A) Digestive
B) Lymphatic
C) Respiratory
D) Nervous

48. The vascular system in plants consists of:
A) Roots and leaves
B) Xylem and phloem
C) Stem only
D) Flowers only

49. Which transports minerals in plants?
A) Phloem
B) Xylem
C) Stomata
D) Roots

50. Transportation is important because it:
A) Produces food
B) Moves substances in organisms
C) Helps in breathing only
D) Removes oxygen

✅ Answer Key (At the End)

1-B, 2-C, 3-C, 4-B, 5-B, 6-B, 7-B, 8-B, 9-C, 10-B
11-B, 12-B, 13-C, 14-C, 15-B, 16-C, 17-B, 18-B, 19-C, 20-B
21-B, 22-B, 23-C, 24-C, 25-C, 26-B, 27-C, 28-B, 29-B, 30-B
31-C, 32-A, 33-B, 34-B, 35-B, 36-B, 37-C, 38-C, 39-B, 40-B
41-C, 42-D, 43-B, 44-D, 45-B, 46-B, 47-B, 48-B, 49-B, 50-B