Table of contents

1. Introduction to Anatomy & Physiology5h 43m
2. Cell Chemistry & Cell Components12h 36m
3. Energy & Cell Processes10h 6m
4. Tissues & Histology10h 3m
5. Integumentary System2h 20m
6. Bones & Skeletal Tissue2h 16m
7. The Skeletal System2h 35m
8. Joints2h 17m
9. Muscle Tissue2h 33m
10. Muscles1h 11m
11. Nervous Tissue and Nervous System1h 35m
12. The Central Nervous System1h 6m
- Introduction to the Central Nervous System
  18m
- The Cerebrum
  48m
13. The Peripheral Nervous System1h 26m
14. The Autonomic Nervous System1h 38m
15. The Special Senses2h 41m
16. The Endocrine System2h 48m
17. The Blood3h 22m
18. The Heart3h 42m
19. The Blood Vessels3h 35m
20. The Lymphatic System3h 16m
21. The Immune System14h 37m
22. The Respiratory System3h 20m
23. The Digestive System2h 5m
24. Metabolism and Nutrition4h 0m
25. The Urinary System2h 39m
26. Fluid and Electrolyte Balance, Acid Base Balance37m
27. The Reproductive System2h 5m
28. Human Development1h 21m
29. Heredity3h 32m

2. Cell Chemistry & Cell Components

Properties of Water- Cohesion and Adhesion

Anatomy & Physiology

2. Cell Chemistry & Cell Components

Properties of Water- Cohesion and Adhesion

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Multiple Choice

The phenomenon responsible for maintaining the upward movement of water through vessels in a tree is __________.

hydration shells

surface tension

specific heat

cohesion

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Verified step by step guidance

Understand the concept of cohesion: Cohesion refers to the attraction between molecules of the same substance. In the context of water movement in plants, it is the force that holds water molecules together.

Recognize the role of cohesion in plant physiology: In trees, cohesion helps maintain the continuous column of water within the xylem vessels, allowing water to move upward from the roots to the leaves.

Differentiate cohesion from other phenomena: Hydration shells involve water molecules surrounding ions or molecules, surface tension is the elastic tendency of a fluid surface, and specific heat is the amount of heat required to change the temperature of a substance. None of these directly explain the upward movement of water in plants.

Consider the process of transpiration: As water evaporates from the leaves, it creates a negative pressure that pulls water upward through the xylem. Cohesion ensures that the water column does not break during this process.

Apply the concept to the problem: Given the options, cohesion is the correct phenomenon responsible for maintaining the upward movement of water through vessels in a tree, as it keeps the water molecules connected and moving as a unit.