CBSE Class 7 Answered
OPENING PRESENT IN THE OLD STEMS OF PLANTS FOR EXCHANGE OF GASES
Asked by jayarajb | 06 Dec, 2015, 03:45: PM
Expert Answer
Respiration in older stems occurs through small pores called lenticels. They are the dead cells present on the bark of woody plants.
which are present as small pores on the bark of woody plants or old roots. These enable oxygen to reach the intercellular spaces of the interior tissues and carbon dioxide to be released to the atmosphere by the process of diffusion. - See more at: http://www.funscience.in/study-zone/Biology/Respiration/RespirationInPlants.php#sthash.JZ6jyiWc.dpuf
Answered by Sivanand Patnaik | 07 Dec, 2015, 08:00: AM
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