The world may be divided into three major climatic zones , namely;
1. tropical climate zone
2. temperate climate zone
3 polar climate zone
Each climatic zone has its special characteristics or climatic conditions.
CHARACTERISTICS OF CLIMATE TYPES
The following climatic types exist in the tropical zone.
a. Equatorial
b. Tropical Monsoon
c. Savanna
d. Hot Desert
e. Tropical Marine
In the temperate zone the following exist
a. Temperate Monsoon
b. Temperate Grassland or Continal
c. Cool Temperate (Forest lands)
d. Tundra
In the Polar/Zone the climate is polar
Read for further information on the characteristics of these climates.
These climate types occur within earth's atmosphere. The atmosphere can be defined as the composition of the air above the earth. Not only does climate occur in the atmosphere but also weather. Weather is the state of the atmosphere at a particular time over a particular place. The condition of the atmosphere can be described in terms of the elements of weather such as precipitation, temperature, atmospheric pressure, humidity, cloud cover, wind speed, wind direction and sunshine.
Climate on the other hand can be defined as the average condition of the atmosphere over a long period of time. There are three factors which determine the climate of a place. These are:
A. altitude - how high or low a place is above sea level
B. latitude - the location of a place (Grid address)
C. distance from the sea - how near or far a place is from the sea
Additional information on climate for your note taking.
The seasons
Saturday, January 5, 2013
Wednesday, January 2, 2013
ROOT AND SHOOT SYSTEM
The Root System
The entire lower part of growing plants that is normally under the soil makes up the root system. Roots are branching organs which grow vertically into the soil. Roots have no leaves, nodes or buds.
In general, the plant root system consists of a taproot (primary root) or fibrous roots (adventitious roots), with attached branch roots and finer rootlets having root hairs close to the tip.
Functions of Roots.
Despite being inconspicuous because they are normally hidden underground, the plant root system performs various functions which are essential to growth and development. Some of these functions include:-
1. Anchorage and support
2. Absorption
3. Storage
4. Photosynthesis
5. Movement
6. Reproduction
Read the following which explains each of the above.
There are different types of root system. Some of these include
(a) tap root
(b) fibrous root .
Examine these images of root types. More information on roots for your readings.
THE SHOOT SYSTEM
All the parts that you see growing above the ground are the organs that together make up the shoot system. Some of these organs include leaves, stems, buds, flowers, etc.
The entire lower part of growing plants that is normally under the soil makes up the root system. Roots are branching organs which grow vertically into the soil. Roots have no leaves, nodes or buds.
In general, the plant root system consists of a taproot (primary root) or fibrous roots (adventitious roots), with attached branch roots and finer rootlets having root hairs close to the tip.
Functions of Roots.
Despite being inconspicuous because they are normally hidden underground, the plant root system performs various functions which are essential to growth and development. Some of these functions include:-
1. Anchorage and support
2. Absorption
3. Storage
4. Photosynthesis
5. Movement
6. Reproduction
Read the following which explains each of the above.
There are different types of root system. Some of these include
(a) tap root
(b) fibrous root .
Examine these images of root types. More information on roots for your readings.
THE SHOOT SYSTEM
All the parts that you see growing above the ground are the organs that together make up the shoot system. Some of these organs include leaves, stems, buds, flowers, etc.
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