Page 14 - ACTIVE SCIENCE 4 TOC

3. Hydrilla, vallisneria and pondweed are the examples of _____________.
4. Sedge is an example of a _____________ plant.

Factual Study
Lotus can reach only 49 inches in height but it can spread 10 feet horizontally.

Terrestrial Plants

Plants which grow on land are called terrestrial plants. They get their name from
the word terra which means land. Such plants grow in different surroundings

like in plains, deserts and mountains.

Let us read about them.

1. Plants in Deserts: Plants which
grow in desert are also called

xerophytes. Water and rainfall
are scarce in the deserts. Therefore,
they grow in hot and dry conditions.
The thick green stem of these plants
contains chloroplasts (like in leaves )

which make food. Desert plants have Cactus Palm Tree
long roots which help in absorbing
groundwater. The leaves are Factual Study
reduced to thorns that prevent loss The seeds of many desert plants are
of water through the process called resistant to dry conditions and can

transpiration. Cactus and palm remain dormant for many years.
trees are examples of such plants.

2. Plants on Mountains and Hill Slopes:

Plants and trees which grow on mountains
are called coniferous trees. These trees grow

in very cold temperatures. These are tall and
conical in shape. This conical shape allows
the sliding of the snow from their branches.

These trees have cones instead of flowers.
Their leaves have a waxy coating and are

Pine Tree needle-shaped. This characteristic saves them
from rotting under snow in winters. The pine,
fir and deodar are examples of such plants.
Deodar Tree

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