Plant Physiology: Transpiration Quiz

Transpiration helps in cooling the plant and maintaining nutrient flow by creating a negative pressure in the xylem.

Stomata are pores primarily responsible for gas exchange and transpiration, while hydathodes are specialized structures that facilitate guttation.

Xerophytic plants have adaptations like sunken stomata, thick cuticles, and reduced leaf surfaces to reduce water loss.

<p>Anti-transpirants are substances that reduce the rate of transpiration in plants, helping to conserve water during drought conditions.</p> Signup and view all the answers

<p>Guttation is the process where excess water is expelled as liquid droplets from hydathodes in leaves, whereas transpiration is the loss of water vapor through stomata.</p> Signup and view all the answers

<p>Sunlight causes the stomata to remain fully open, increasing the rate of transpiration during the day, while at night, stomata close, reducing transpiration.</p> Signup and view all the answers

<p>High wind velocity accelerates transpiration by removing water vapor quickly, preventing saturation of the air around the leaf.</p> Signup and view all the answers

<p>Transpiration rates decrease when soil water is low, causing the plant to potentially wilt due to insufficient moisture.</p> Signup and view all the answers

<p>Transpiration aids in the ascent of sap and helps cool the plant during hot weather.</p> Signup and view all the answers

<p>Excessive water loss through transpiration can cause plant wilting and loss of turgidity.</p> Signup and view all the answers

<p>Transpiration lowers water concentration in the cell sap, creating an osmotic gradient that enables root hairs to absorb water from the soil.</p> Signup and view all the answers

<p>Cobalt chloride paper is placed on both surfaces of a dorsiventral leaf; the lower surface shows a faster color change from blue to pink, indicating higher transpiration.</p> Signup and view all the answers

<p>The capillary tube should be properly dipped into the water.</p> Signup and view all the answers

<p>Transpiration.</p> Signup and view all the answers

<p>It is used to adjust the position of the air bubble in the graduated capillary tube.</p> Signup and view all the answers

<p>The movement of the air bubble indicates the rate of transpiration.</p> Signup and view all the answers

<p>Transpiration is the loss of water vapor by the plant.</p> Signup and view all the answers

<p>Cuticular transpiration takes place through the cuticle covering the leaves.</p> Signup and view all the answers

<p>Guttation is the loss of water in the form of droplets from leaves.</p> Signup and view all the answers

<p>The purpose is to demonstrate that there is no change in the level of water in the absence of a plant.</p> Signup and view all the answers

<p>Lenticels are pores in the periderm of woody stems for gas exchange.</p> Signup and view all the answers

<p>Transpiration is the process by which plants lose water as vapors through their aerial parts.</p> Signup and view all the answers

<p>Wilting occurs due to unfavourable water relations, such as excessive transpiration.</p> Signup and view all the answers

<p>Oil is placed over water to prevent evaporation of water from the test tube.</p> Signup and view all the answers

<p>Transpiration.</p> Signup and view all the answers

<p>The color of dry cobalt chloride paper is blue, which indicates it is dry.</p> Signup and view all the answers

<p>The experimental leaf is a dicot because it exhibits reticulate venation.</p> Signup and view all the answers

<p>Glass slides are used to prevent air water vapor from interfering with the experiment.</p> Signup and view all the answers

<p>The dorsal side is expected to show fewer or no pink dots due to fewer stomata.</p> Signup and view all the answers

<p>Transpiration is the process where plants lose water as vapor from their aerial parts.</p> Signup and view all the answers

<p>In humid conditions, transpiration decreases, while it increases rapidly on windy days.</p> Signup and view all the answers

<p>Anhydrous calcium chloride absorbs moisture, indicating the amount of water transpired by the leaf.</p> Signup and view all the answers

<p>The weight of CaCl2 will increase due to the absorption of water vapor from the transpiring leaf.</p> Signup and view all the answers

<p>A manometer measures the pressure changes that reflect the differences in transpiration rates from the leaf surfaces.</p> Signup and view all the answers

<p>Plant E would experience the highest weight loss due to exposure to strong light, enhancing transpiration.</p> Signup and view all the answers

<p>Vaseline blocks the stomata, reducing water loss through transpiration.</p> Signup and view all the answers

<p>Plant A would remain healthier as it is not subjected to any barriers to transpiration.</p> Signup and view all the answers

<p>Plant A can be considered the uncontrolled variable as it has no modifications affecting transpiration.</p> Signup and view all the answers

<p>The maximum difference in weight loss would be between plants D and E.</p> Signup and view all the answers

<p>The weight change in plant D is expected to be minimal since the upper surfaces of leaves are removed.</p> Signup and view all the answers