| Factors Affecting Population Distribution of Plants and Animals |
| Factors |
The Effects towards Plants |
| Temperature |
- The optimum temperature for plant growth is between 25 degrees Celsius to 30 degrees Celsius.
- High temperatures can cause enzymes to break down. Biochemical processes in plants will be disrupted.
- Low temperatures will reduce enzyme activity. This will slow down the biochemical reaction.
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| Water |
- Water is needed for enzyme activity, photosynthesis as well as transport and support in herbaceous plants.
- Dry areas such as deserts and tundra areas such as the poles have low population distribution and plant density.
|
| Light |
- Light is very important for the process of photosynthesis.
- Areas that receive less light have a small number of plants.
|
| pH of soil |
- Soil pH is important for nutrient uptake by roots.
- Soil pH that is too acidic or alkaline will cause the absorption of nutrients by plants to be low.
- Tree growth will be affected due to lack of nutrients.
|
| Mineral salt content |
- The salt content affects the osmotic absorption of water by the roots.
- The high salt content in the soil causes plants to lose water through osmosis.
- Minerals are needed to produce proteins, enzymes, nucleotides, vitamins and other compounds.
- For example, phosphorus is used to form phospholipids (in the formation of cell membranes).
|
| Faktor |
The Effects towards Animals |
| Temperature |
- Areas exposed to high temperatures in a habitat are less occupied by animals such as worms and snails.
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| Water |
- Animals are concentrated in areas that have sufficient water resources to drink and cool down.
|
| Breeding site |
- A suitable and safe breeding place is needed by animals to give birth and raise children.
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| Food supply |
- Food is important for survival because animals are heterotrophic that depend on plants and other animals as food.
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