miércoles, 11 de mayo de 2011

Plants

Chlorophyll:A chemical that gives plants their green color and trops light energy.


Photosyntesis:The precess in which plants use water, carbon dioxide and energy from the sun to make food.


Vascular plant: plant that have tube-like cells,in their root, stems and leaves to carry food and water.


Non vascular plant:plant that don´t have tube-like cells in their stems and leaves.


Moss: a small non vascular plant  that have bouth;stems and leaves, but no roots.

Sexual Reproduction: the forming of a new organism with the union of two cells.

Egg:a female reproductive cell.

sperm: a male reproductive cell.

Fertilization:the joining of egg and sperm.


Xylem:cells that carry water and disolved minerals from the root to the leaves.

Pholem: cell that carry food that is made in the leave to all part of the plant.
 
Fern :Avascular plant that reproduce with spore.

Seed: a part of a plant that contains a new young plant and stores food.

Embryo: An organism in it earliest stagesof growth.

Conifer: A plant that reproduce seed in cones.

Pollen: the tiny yellow grain on seeds plants in which sperm develops.

Flowering  plant: A vascular plant that produce seeds inside a flower.

Flower:the reproductive part of a flowering plant.















 

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