Gymnosperm Cone

image

 

The picture above shows a female pine cone. Pine trees are gymnosperms because they have a seed with no outer coating. Gymnosperm basically means “naked seed”. Gymnosperms like pine trees (which are conifers) use cones as a means of reproduction. The cone is the gametophyte of the plant. The reason why the cone above is a female is because the male cone is smaller and thinner, while the female cone is larger. Also, male cones are higher up on the tree, and female cones are further down on the tree. This is because male cones release pollen which floats down to the female cone’s seeds and fertilizes them. Within the female cone, the zygote becomes an embryo surrounded by a seed which is then released.

Advertisements

Leave a Reply

Fill in your details below or click an icon to log in:

WordPress.com Logo

You are commenting using your WordPress.com account. Log Out / Change )

Twitter picture

You are commenting using your Twitter account. Log Out / Change )

Facebook photo

You are commenting using your Facebook account. Log Out / Change )

Google+ photo

You are commenting using your Google+ account. Log Out / Change )

Connecting to %s