Gametophytes are _________ in that they have half a full set of chromosomes.

Approximately how long ago did “Tolland Man” die?

___________-help to minimize the loss of organic products as a result of photorespiration; diminishes photosynthesis on hot, dry days.

________-Enhance the transfer of nutrients from the parent to the embryo.

Charophyceans possess a layer of durable polymer that keeps it from drying out called

The synthesis of new cell plates during cell division involves the formation of a

  ___________-conducts most of the water and nutrient in plants

__________-female gametangia.

  ______________-organs that increase the surface area of vascular plant; allows them to capture more sunlight for photosynthesis.

Arthrophytes refer to