Plant transport and the structure of plants

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Plant transport and the structure of plants

tomato_plant-min

Tomato Plant. image credit wisegeek.com

ZIMSEC O Level Integrated Science Notes: Plant transport and the structure of plants

  • Plants have two main organ systems: a shoot system and a root system
Tomato plant structure. Image credit uic.edu

Tomato plant structure. Image credit uic.edu

Root system

  • Is usually found beneath the ground.
  • Anchors the plant into its position.
  • Absorbs water and nutrients from the soil.
  • Acts as a conduit (pipe) for water and nutrients.
  • Stores food especially in tubers like sweet potatoes and potatoes.

Shoot system

  • Is usually found above the ground.
  • Elevates the plant above the soil.
  • Performs many functions for example photosynthesis (leaves), reproduction and dispersal (flowers and fruits) etc.
  • Acts as conduit for food and water.

Transport in plants

  • Plants need substances form the environment e.g. carbon dioxide, water and oxygen.
  • These substances cannot enter into the plant over its whole surface.
  • Water enters thought the roots and the gases (oxygen and carbon dioxide) enter and leave through the roots.
  • Water also leaves the plant via the leaves in a process called transpiration.
  • Plants therefore need a transport system to carry the water up to the leaves and the food made in the leaves during photosynthesis 
  • and the food to other parts of the plant that cannot make their own food.

To access more topics go to the Integrated Science Notes page.

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By | 2017-01-17T11:17:55+00:00 August 30th, 2015|Notes, O Level Science Notes, Ordinary Level Notes|1 Comment

About the Author:

He holds an Honours in Accountancy degree from the University of Zimbabwe. He is passionate about technology and its practical application in today's world.

One Comment

  1. paulina August 31, 2015 at 4:07 pm - Reply

    This is very helpfull keep on doing the great job.

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