Page 80 - Science Class 06

combines with the food that we digest and Like animals, plants also excrete. Plants
produces energy. The lungs then collect excrete gaseous wastes through the
carbon dioxide and throw it out of the body stomata. Besides, plants also excrete liquid

through nose. Respira on is a con nuous wastes in the form of gums and resins.
process. But, plants take in carbon dioxide Feeling
through the small pores present in their
leaves called stomata. They use carbon Animals and plants both are resis ve. But
dioxide in the process of photosynthesis. animals have sense organs which plants do
not have. Sense organs help them to know
However, plants also give out carbon
about their surroundings. For example,
dioxide during the night.
when our any body part comes in contact
with a hot object we pull that part
Nose
immediately. When we see some delicious
Mouth
Lungs Trachea food our mouth starts watering.
The situa on or change around us that
makes us react is called a s mulus. The
ac on taken by us according to the s mulus

Diaphragm is called our response.
Respira on
Plants do not have sense organs s ll they
Excre on
respond to s muli (singular s mulus). Some
Excre on is the process in which wastes flowers open early in the morning and close
produced inside the body of animals or during the day. A touch me not plants folds
plants are thrown out of the body. Animals its leaves on touching.

excrete waste products in the form of gas
Life Span and Death
(carbon dioxide), liquid (urine and sweat)
All the living beings die a er comple ng a
and solid (faces). Animals have different
organs that carry on the process of certain period of life. However, many animals
excre on such as lungs, kidneys, skins, gills, die without comple ng there total life span
sweat glands, etc. due to illness or accidents. Different animals

Vena Cava Aorta have different life span.
Plants also have a certain life span. Different
Renal Vein Renal Artery
kinds of plants live for different me periods.
Herbs live for a few days to a few months. On
the other hand, many shrubs and trees live
Ureter Kidney
for many years.
Different life spans of different living beings
Bladder
are shown in the table given on the next page:

Urethra
Excretory Organs

80 Science-6