Monday, May 27, 2013

Seed Structure and Function

My baby corn seeds are monocots and my baby tomato seeds are dicots. Here are the many differences between monocots and dicots. 
Monocots: Embryo with single cotyledon, pollen with single furrow or pore, flower parts in multiples of three, major leaf veins parallel, stem vascular bundles scattered, adventitious roots, and secondary growth absent. Other example of monocots are rice,wheat, ginger and tulips. 
Dicots: Embryo with two cotyledons, pollen with three furrows or pores, flower parts in multiples of four or fives, major leaf veins reticulated, stem vascular bundles in a ring, roots developed form radicle and secondary growth is often present. Other examples of dicots are beans, pepper, cinnamon, and avocado.  
Monocot and dicot seeds contain an embryo which had a cotyledon, epicotyl, and hypocotyl. They also have an endosperm and seed coat. The seed coat forms the wall of the embryo sack and protects the seed. The endosperm is a food supply for the baby seed and contains three sets of chromosomes.The embryo is the immature plant, the cotyledon is the seed lead that fist emerges and the radicle is the root.

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