Page 23 - Science class 4
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The process by which leaves prepare their own food from water and carbon
dioxide in the presence of sunlight is called photosynthesis. (photo means
light and synthesis means putting together)
HOW
HOW
HOW DO PLANTS USE THE FOOD MADE BY PLANTS? DO PLANTS USE THE FOOD MADE BY PLANTS? DO PLANTS USE THE FOOD MADE BY PLANTS?
Plants use the food made by them for
various purposes, such as :
± their growth
± building new cells
± repairing worn out cells
Extra food is stored in the form of starch in
leaves, stems and roots. This food storing
part is used by us as food.
Knowledge Plus
Trees growing on mountains
have needle like leaves to prevent
water loss.
Interdependency of plants and animals.
RELATIONSHIP BETWEEN PLANTS
AND ANIMALS
Animals and plants are dependent on each
other in several ways. Animals get their food
from plants. Do you know that the oxygen
that animals breathe in, also comes from
plants. Oxygen is released by the plants
during the process of photosynthesis. We
human beings also depend on plants for our Process of
food. Animals breathe out carbon dioxide. Photosynthesis
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