Transport in Plants Chapter 14 Transport in a
- Slides: 9
Transport in Plants Chapter 14
Transport in a plant • Plants have a transport system. • Xylem vessels carry water (and minerals ) from the roots to the leaves of the plant. • Phloem tubes carry food (made in the leaves) all around the plant.
To show the absorbtion of water by roots
Transpiration • What is Transpiration? • Transpiration is the loss of water from the leaves of a plant. • Water is lost through the stomata. These are tiny pores on the undersurface of the leaf.
The Transpiration stream The flow of water from the roots to the leaves is called the transpiration stream.
Functions of Transpiration The functions of transpiration are: 1. To carry water to the leaves for photosynthesis 2. To carry minerals from the roots to the leaves 3. To cool the plant.
Factors affecting transpiration Transpiration is highest in: Bright sunlight a gentle breeze low humidity and good availability of soil water
To show the absorption of water by roots • Set up apparatus as shown. • Test tube A is a control. • Record the level of water in each test tube after a week. Oil • Result Water
To Demonstrate Transpiration Apparatus: Potted plant, plastic bag, Elastic band, Blue Cobalt chloride paper Method: 1. Set up apparatus as shown in diagram 2. Leave in a warm place for 3 -4 hours. 3. Test the droplets of colourless liquid with blue cobalt chloride paper. Result The blue cobalt chloride paper will turn pink. This shows that water vapour is released from a plant during respiration.
- Vascular vs nonvascular plants
- Vascular plants vs nonvascular plants
- Non flowering plants characteristics
- C3 plants vs c4 plants
- Symbiotic relationship
- Transport in plants
- Resource acquisition and transport in vascular plants
- Primary and secondary transport
- Primary active transport and secondary active transport
- Now answer the following questions