Keywords, Points to Remember

KEYWORDS

Tap root: A primary root that grows vertically downward and gives off small lateral roots.

Fibrous root: Cluster of roots.

Habitat – The area where a particular organism actually lives.

Aquatic – Plants whose natural mhabitat is water.

Terrestrial – Plants whose natural habitat is land.

Adaptation – Changes in the structure or behaviour of an organism that helps the plants  to survive in a particular habitat.

Modification – a change in organism caused by environmental factors.

Tendril climber: A slender organ of a modification of stem

Twiner: Plants which climb up trees and other objects.

Thorn: A sharp and stiff part of a modification of stem

Points to Remember

* The plant body of flowering plant consists of two main parts. They are

1. Root system

2. Shoot system

* Root fix the plants to the soil. Roots absorb water and minerals from the soil

* Stem is the ascending part of the plant axis. It has nodes and internodes.

* Leaves perform three major functions such as

1. Photosynthesis.

2. Respiration.

3. Transpiration

* The surroundings where plant live is called their habitat

* The two major habitats.

1. Aquatic habitat

2. Terrestrial habitat

* Adaptations are special features in plants which help them to survive in their habitat.

* Tendril is a climbing organ of some weak stemmed plants

* Twiner have weak stem and they can’t stand straight on their own 

ICT CORNER

Life cycle of plants

Lets learn parts of the flower.

Steps:

* To learn more about the parts of the flower type science kids in the google / browser and select games. Then select life cycle of plants in the screen a flower with its part appear drag one of the flower’s stamen into labelled box. Now drag the part of the flower and place it in the labelled box. It’s a trial 

* Instructions will appear on the screen. When click ok next step will appear. Then we have to drag each and every part of the flower into the relevant box.

* When we click the magnifying glass symbol, uses of the floral parts will appear. Then click ok button. Next an image of flower with its parts appears. It’s an evolutionary exercise.

URL:

http://www.sciencekids.co.nz/gamesactivities/lifecycles.html