Succession of Plants.

Question

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Answer

Succession of plants is of two types based on the nature of the habitat. These are hydrarch or hydrosere which is based on water or very wetland areas and xerarch or xerosere based on very dry areas.
In wetter areas hydrarch succession begins and then successional series progress from hydric to the mesic conditions.
Xerarch succession starts in dry areas and the series progress from xeric to mesic conditions.
Both hydrarch and xerarch successions lead to mesic or medium water condition which is neither too xeric nor too hydric.

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Instrument / Technique	Purpose of use
Sphygmomanometer	———————
—————-	X-ray imaging of the cardiac blood vessels to locate the position of blockages.
—————	To measure ECG.

Column A	Column B
(1) Nutritive tissue of embryo	(a) Perisperm
(2) Remnants of nucellus in seed	(b) Cotyledon
(3) Nutritive tissue of developing microspores	(c) Endosperm
(4) First photosynthetic organ of embryo	(d) Tapetum