Desert ecosystems receive very little rainfall and experience large temperature fluctuations between day and night. A desert ecosystem is defined by the interactions between plant and animal populations and the climate. Desert plants have adaptations like being succulent or having thickened stems and fleshy parts to store water, which helps them survive the extreme desert conditions with short growing seasons and long dormant periods. Cacti are an example of a succulent desert plant that stores water in its thick, fleshy stem.

1. Desert
Ecosystem
Presented by J.Dhanushiya
II Bsc.Chemistry

2. What are Desert ?
• There are both cold and hot desert. Both kinds of
deserts receive very little rainfall and both get
very cold at night, but hot deserts bake during
the day.

3. What is a Desert Ecosystem?
• A desert ecosystem is defined by “interactions
between organism populations, the climate in
which they live, and any other non-living
influences on the habitat”.
• There is a relationship between the plants and
animals in the desert which enables all of them
to survive.
• Plants make their own food.
• Without the plants, all other living things would
die.

4. Adaptations in plants
• Desert plants have highly modified features
that helps them to thrive at extreme climate
condition.
• They have short growing seasons and long
dormancies.
• The well known desert plant, cactus is a
succulent(meaning it has thickened) and
fleshy parts to store water.
• Stem is the only part that stores water and
water is stored as a thick viscous liquid.

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