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Components of Respiratory System in Humans

Give the biol...

Question

Give the biological/technical terms of the following:
Permanently open structures seen on the bark of an old woody stem

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Solution

Lenticels
It acts as a pore, allowing direct gas exchange between internal tissues and the atmosphere via the bark, which is otherwise impermeable to gases.

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Q. Give the biological technical terms for the following.
(i) Chemical found in the blood which act against antigens
(ii) A constituent that causes pollution
(iii) The onset of menstruation in a young girl
(iv) Structure which connects the placenta with the foetus
(v) The fluid present between the layers of meninges
(vi) Permanently open structures seen on the bark of an old woody stem
(vii) The biological process which is the starting point of the food chain
(viii) The change in an organism resulting due to stimulus
(ix) An Antiseptic substance present in tears
(x) A solution in which the relative concentration of water molecules and the solute on either side of the cell membrane is the same

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are the opening in the bark of woody stem.

Give biological/technical term of the following.

Give the Biological / technical term for the following:

Q. The diameter of Woody stems is continuously increasing. Which structure ensures that there is always enough bark to cover the outside of stem?

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