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Title: Bio
Description: this notes is specially prepared for student who want study deeply every word define through diagram so plz purchase and study
Description: this notes is specially prepared for student who want study deeply every word define through diagram so plz purchase and study
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Gaseous Exchange in Plants:
Plants Have No organs or systems for exchange of Gases with the environment every
cell of the plant body exchange gases with the environment by its own
...
The gaseous
exchange occurs through these stomata
...
In young
stems and leaves,some gaseous exchnage also occurs through the cuticle which is
present over their epidermis|
Gaseous Exchange in a Leaf
leaf cells faces two situations
...
Similarly the carbon dioxide
produced during cellular respiration is utilized in photosynthesis
...
In woody steam and mature roots, the entire surface is covered by bark which is
impervious to gases or water
...
These are called the lenticels
...
|the lenticels
are slightly more raised than the general surface of stems|
Gases diffuse in and out of the general surface of the young roots
...
The aquatic plants get the oxygen dissolved in water and release carbon dioxide in
the water
...
They are the
passageways for gases and water vapours
...
Problems:
what is the net gaseous exchange from leaves during day and night times?
Apparatus Required:
Petri dish,water,glass slides and cover slips, methylene blue,light Microscope
...
>The cells of leaves carry out photosynthesis during day time only
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Procedure:
1
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2
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3
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4
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5
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6
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Observation: observe both epidermis(upper and lower)and point out the
stomata
...
draw
your observations on the notebook
...
How many stomata did you observe?
II
Title: Bio
Description: this notes is specially prepared for student who want study deeply every word define through diagram so plz purchase and study
Description: this notes is specially prepared for student who want study deeply every word define through diagram so plz purchase and study