Water reaches the top of a plant due to

Water Reaches The Top Of A Plant Due To Biology Question

Water reaches the top of a plant due to

Options

(a) root pressure
(b) capillarity
(c) transpiration
(d) diffusion

Correct Answer:

transpiration

Explanation:

Water is mainly absorbed by roots which goes upwards so as to replace water loss in transpiration and to be used in photosynthesis. This upward movement of water from roots to leaves through stem against force of gravity is called ascent of sap. Different theories have been put forward in support of ascent of sap. They include root pressure theory, capillary theory and transpiration pull theory . Root pressure is developed when rate of absorption is more than rate of transpiration and so water is pushed

Related Questions:

  1. Endocrine glands differ from other glands, because they secrete
  2. Choose the correctly matched pair – ephithelium
  3. Who among the following concluded that every cell comes from a pre existing
  4. The prokaryotic cells are characterised by
  5. Nuclear membrane is absent in

Topics: Transport and Nutrition in Plants (163)
Subject: Biology (4253)

Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score

18000+ students are using NEETLab to improve their score. What about you?

Solve Previous Year MCQs, Mock Tests, Topicwise Practice Tests, Identify Weak Topics, Formula Flash cards and much more is available in NEETLab Android App to improve your NEET score.

NEETLab Mobile App

Share this page with your friends

Be the first to comment

Leave a Reply

Your email address will not be published.


*