1) Spore 
A carpospore is a diploid spore produced by red algae. After fertilization, the alga`s carpogonium subdivides into carpospores, and generally the largest type of spore (larger than bispores, which are larger again than tetraspores). The wall of the carpogonium then breaks down, releasing the spores into the environment. ...
• (n.) A kind of spore formed in the conceptacles of red algae.
(from the article `algae`) ...(the zygote) and the female gametophyte tissue around it develop into a basketlike or pustulelike structure called a carposporophyte. The ...
Car'po·spore noun [ Greek 
[n] - a nonmotile spore of red algae
noun a nonmotile spore of red algae