Excretion in plant and excretion in animal
Answers
Answer:
Metabolic activities take place in the cells of living organisms all the time.These activities produce wastes which cause serious health problems if they are allowed to accumulate.
Excretion is the process by which living body gets rid of wastes after taking the required nutrients and minerals from the food it has consumed.
Excretion occurs in plants and animals as they both have waste products to be removed from their bodies.
In human beings, the waste products are ammonia, carbon dioxide, urea, uric acid, bile pigments, excess salts etc. Kidneys, lungs, liver, and skin are the important excretory organs.
Plants have a less -developed excretory system unlike animals to throw out nitrogenous waste materials. Plants have two different types of excretion; Photosynthesis and Respiration
Oxygen is a waste product of photosynthesis and carbon dioxide is a waste product of aerobic respiration.Resins, gums, latex are some other waste products.
Explanation:
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Excretion in Animals:
UNICELLULAR
• simple diffusion from
body surface to external
Surroundings
MULTICELLULAR
Done by an excretory system
•2 Kidneys
•2 Ureters
•Urinary bladder
•Urethra
HOW:
URINE
1) Waste material is brought to
Kidneys through arteries.
2) There are millions of filtration
units called nephrons.
3) These nephrons absorb all the
filtrate.
4) The important products like Na
and Cl ions, glucose, amino acids
Are reabsorbed(through
diffusion) by the vein
which passes over the nephrons.
5) The unabsorbed part is
undesirable and is passed
To the collecting duct.
6)This is called urine and is
collected in the urinary bladder
Which is excreated by humans
(Voluntary , usually under our
Control)
FAECES
The solid waste that remains after the food is absorbed by the small and large intestine is excreted by the anus.
EXHALATION & SWEAT
We breathe out carbon dioxide and excess salts and water is excreated in the form of sweat
PLANTS
• oxygen can be thought as a waste
Products it's thrown out by
stomata.
•Excess water is excreted by the
Help of transpiration.
•They lose their leaves
•They may excreate waste into the
Soil.
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