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1.3

Major VersionM

by Raghottam Joshi

Introduction

Transpiration is one of the natural processes vital for a plant's survival. Without transpiration, a plant will not be able to suck up water from the roots to reach every nook and corner of the plant. In this simple experiment, we observe the effects of transpiration by covering a few leaves of a living plant with an airtight transparent polythene bag.

Tools

Parts

Video Overview

  1. Identify a nice outdoor plant with big leaves.
    • Identify a nice outdoor plant with big leaves.

    • Cover a few leaves of the plant with transparent polythene bags, using rubber bands.

    • Make sure they are airtight, but not very tight so as to suffocate the covered leaves/stem.

    • Leave this set-up for 3 hours in the Sun.

    • Make observations every hour.

  2. Within 2-3 hrs, water droplets are condensed within the polythene bag.
    • Within 2-3 hrs, water droplets are condensed within the polythene bag.

    • Observe the polythene bag.

    • Water droplets may not be seen in the polythene bags if - Plant leaves are not fresh enough and/or covered in dust.

    • Plant is not placed outdoors where there is adequate sunlight.

    • Polythene bag not airtight around the leaves.

    • Weather conditions not optimal for transpiration, e.g. too rainy or too cold.

Finish Line

Madhushree HS

Member since: 05/02/2017

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