Chapter 11: Transport in Plants — Online MCQ Test
BOTANY · CLASS 11th · Tamil Nadu State Board
Practice Chapter 11: Transport in Plants with a free chapter-wise online MCQ test.
This chapter covers: This chapter covers water movement mechanics diffusion osmosis plasmolysis and water potential concepts. Students study xylem ascent of sap phloem translocation mechanisms and tran....
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Chapter 11: Transport in Plants — Important Questions & Answers
The movement of molecules from a region of higher concentration to a region of lower concentration is called:
- A. Diffusion
- B. Osmosis
- C. Active transport
- D. Facilitated diffusion
Answer: A. Diffusion
Diffusion is the net movement of particles from a region of higher concentration to lower concentration until equilibrium is reached.
Diffusion is the net movement of particles from a region of higher concentration to lower concentration until equilibrium is reached.
Which of the following is responsible for the transport of water in plants?
- A. Phloem
- B. Xylem
- C. Cortex
- D. Pith
Answer: B. Xylem
Xylem tissue consists of tracheids and vessels which are specialized for the upward conduction of water and minerals.
Xylem tissue consists of tracheids and vessels which are specialized for the upward conduction of water and minerals.
Water potential of pure water at standard temperature and pressure is:
- A. 1
- B. Negative
- C. Zero
- D. Infinity
Answer: C. Zero
By convention, the water potential of pure water is taken as zero.
By convention, the water potential of pure water is taken as zero.
Analyze the Cohesion-Tension theory: Which property of water allows the water column to remain unbroken during ascent?
- A. Adhesion and cohesion
- B. High specific heat
- C. Surface tension
- D. All of the above
Answer: D. All of the above
The column stays intact due to mutual attraction (cohesion), attraction to xylem walls (adhesion), and surface tension properties.
The column stays intact due to mutual attraction (cohesion), attraction to xylem walls (adhesion), and surface tension properties.
A cell is placed in a solution and remains unchanged in size. This solution is described as:
- A. Hypotonic
- B. Hypertonic
- C. Isotonic
- D. Plasmolytic
Answer: C. Isotonic
In an isotonic solution, the water potential outside and inside the cell is equal, resulting in no net movement of water.
In an isotonic solution, the water potential outside and inside the cell is equal, resulting in no net movement of water.