Water Movement and Properties in Plants

The video tutorial explores the emergent properties of water, focusing on cohesion, adhesion, and surface tension. It explains how water molecules stick to each other and other substances through hydrogen bonding, and how these properties are crucial in biological processes like plant transpiration. The tutorial also covers surface tension, illustrating its role in forming water droplets and supporting small organisms on water surfaces.

What is the primary force that allows water molecules to stick to each other?

• Van der Waals forces

• Hydrogen bonding

• Covalent bonding

• Ionic bonding

Which term describes water's ability to stick to other substances?

• Adhesion

• Cohesion

• Capillary action

• Surface tension

What is the process called where water is pulled up from the roots to the leaves in plants?

• Transpiration

• Photosynthesis

• Osmosis

• Respiration

Through which plant structure does water primarily travel upwards?

• Chloroplast

• Xylem

• Stomata

• Phloem

What role does cohesion play in the movement of water in plants?

• It helps water molecules stick to plant tissues.

• It allows water molecules to stick to each other, forming a continuous column.

• It prevents water from evaporating.

• It breaks down water molecules for absorption.

What is the term for the movement of water through narrow spaces against gravity?

• Evaporation

• Diffusion

• Osmosis

• Capillary action

What causes surface tension in water?

• Gravitational pull

• Hydrogen bonds between water molecules

• Magnetic forces

• Electrostatic attraction

Why is surface tension biologically important?

• It makes water a good solvent.

• It increases water's boiling point.

• It prevents water from freezing.

• It allows insects to walk on water.

Which of the following is an example of surface tension in nature?

• Water evaporating

• Water boiling

• Water forming droplets

• Water freezing

What is the significance of water droplets in the ecosystem?

• They provide a habitat for fish.

• They help in the decomposition of organic matter.

• They are essential for photosynthesis.

• They are crucial for the food web and insect life.