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Neco Biology practical answers 2016 are here!!!!

petertolzy US ...387 days ago
SPECIMEN T= WATER
(water)
it is the compound of hydrogenand oxygen.
Sources of specimen V: River,pond, stream,
sea, lakeocean

Economic importance
1. For seed germination
2.plant growth
3.maimtain body temperature and regulation
4. For nutrient distribution For excretion of
waste product in the body

EGG(egg)
it is laid by fowl on the dry land after
fertilization. it is a special egg called amnite
egg because of thepresence of aministic fluid
that provide aquatic environment for the
embryo.it consist of the shell yolk. Embroyotic
membrane albumen and chalaza.

Functions of the parts of Egg
* Shell membrane; provides gaseous exchange
surface.
* Air space; store air for gaseous exchange
Albumen provides food..(protein and salt)and
water for the embryoyolk.
* Sac; contains the yolk.
* Chalaza; supports the yolk
* Embryo ;it grows and developes into new
organism.
* Chodon; controls permeability and prevents
water loss fromamnion.

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