Page 33 - Science class 4
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Deciduous Trees
± These trees can bear the heat and give shade in summer.
± These trees shed their leaves in winter.
± This is how they adapt themselves and survive.
± When the season changes, fresh new leaves appear.
± Rosewood, teak and gulmohar are the examples of such
Gulmohar tree plants.
Desert Plants
± The desert areas have little rainfall, therefore fewer plants grow there.
± These plants live on very little water and store what
they get.
± Their roots go deep in search of water or spread
widely. As the plants cannot afford to lose water, their
leaves are reduced to spines .
± These plants have a green fleshy stem.
± The stem stores food and water.
± Cactus and prickly pear are examples of such plants. Cactus
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Some climber plants are as thick and strong as a rope, e.g: lianas.
INSECTIVOROUS PLANTS
± Some plants grow in soil which is poor in minerals.
± So, they eat insects to get enough nutrition. The
leaves of the Venus fly trap are like a trap . They can
snap shut when an insect sits on them.
± The hollow leaves of the Pitcher plant are filled
with nectar . When insects come to drink this, the
Pitcher plant lid closes and they are eaten by the plant.
PLANTS OF THE GRASS FAMILY
Cereals like wheat maize and rice belong to the grass family.
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These plants are useful to us in many ways :
± They provide food to human beings and animals.
