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What is Transpiration? Video Lecture | Science Class 7 (Old NCERT)

FAQs on What is Transpiration? Video Lecture - Science Class 7 (Old NCERT)

1. What is transpiration in plants?

Ans.Transpiration is the process by which water vapor is released from the aerial parts of plants, primarily through small openings called stomata. This process is crucial for regulating water uptake, temperature control, and nutrient transport within the plant.

2. What are the main types of transpiration?

Ans.The main types of transpiration include stomatal transpiration, which occurs through stomata on leaves, cuticular transpiration, which occurs through the cuticle covering leaves and stems, and lenticular transpiration, which occurs through lenticels on woody plants. Each type plays a role in water loss and gas exchange.

3. How does transpiration affect plant health?

Ans.Transpiration is vital for plant health as it helps in cooling the plant, maintaining nutrient flow from the roots to the leaves, and creating a negative pressure that facilitates water uptake. Insufficient transpiration can lead to wilting and nutrient deficiencies.

4. What factors influence the rate of transpiration?

Ans.The rate of transpiration is influenced by several factors including temperature, humidity, wind speed, and light intensity. Higher temperatures and wind speeds can increase transpiration rates, while high humidity can decrease it.

5. How can transpiration be measured in plants?

Ans.Transpiration can be measured using various methods such as the potometer, which records water loss in a plant cutting, or by using transpiration chambers that measure the water vapor released. These methods help in understanding plant water use efficiency and health.

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Sep 03, 2025 Last updated

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