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On a dry sunny day, how does O into the leave by respiration O out of the leaf by diffusion O out of the leaf by respiration O Into the leaf by diffusion

On a dry sunny day, how does O into the leave by respiration O out of the leaf by diffusion O out of the leaf by respiration O Into the leaf by diffusion

Human Anatomy & Physiology (11th Edition)
Human Anatomy & Physiology (11th Edition)
11th Edition
ISBN:9780134580999
Author:Elaine N. Marieb, Katja N. Hoehn
Publisher:Elaine N. Marieb, Katja N. Hoehn
Chapter1: The Human Body: An Orientation
Section: Chapter Questions
Problem 1RQ: The correct sequence of levels forming the structural hierarchy is A. (a) organ, organ system,...
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### Understanding Water Movement in Plant Leaves **Question:** On a dry sunny day, how does water vapour move through the stomata of a leaf? **Options:** 1. Into the leaf by diffusion 2. Out of the leaf by respiration 3. Out of the leaf by diffusion 4. Into the leaf by respiration **Explanation:** This question aims to assess comprehension of the process by which water vapour moves in plants, specifically on how it exits or enters the leaf through the stomata. **Correct Concept:** - **Diffusion:** This is the movement of molecules from an area of higher concentration to an area of lower concentration. - On a dry sunny day, water vapour typically moves **out of the leaf by diffusion**. This process occurs because the concentration of water vapour in the leaf is higher than in the dry external environment, causing water vapour to diffuse out through the stomata. For students learning about plant physiology, understanding this process is crucial. It demonstrates how plants manage water loss and gas exchange, which are vital for their survival and efficient functioning in different environmental conditions. ### Diagram Explanation: - **Stomata:** Tiny openings on the surface of leaves. - **Water Vapour Movement:** Arrows indicating the direction of water vapour diffusion from inside the leaf to the outside environment due to higher internal concentration compared to a dry, sunny external atmosphere.
Transcribed Image Text:### Understanding Water Movement in Plant Leaves **Question:** On a dry sunny day, how does water vapour move through the stomata of a leaf? **Options:** 1. Into the leaf by diffusion 2. Out of the leaf by respiration 3. Out of the leaf by diffusion 4. Into the leaf by respiration **Explanation:** This question aims to assess comprehension of the process by which water vapour moves in plants, specifically on how it exits or enters the leaf through the stomata. **Correct Concept:** - **Diffusion:** This is the movement of molecules from an area of higher concentration to an area of lower concentration. - On a dry sunny day, water vapour typically moves **out of the leaf by diffusion**. This process occurs because the concentration of water vapour in the leaf is higher than in the dry external environment, causing water vapour to diffuse out through the stomata. For students learning about plant physiology, understanding this process is crucial. It demonstrates how plants manage water loss and gas exchange, which are vital for their survival and efficient functioning in different environmental conditions. ### Diagram Explanation: - **Stomata:** Tiny openings on the surface of leaves. - **Water Vapour Movement:** Arrows indicating the direction of water vapour diffusion from inside the leaf to the outside environment due to higher internal concentration compared to a dry, sunny external atmosphere.
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