Definitions

1. noun

A spore or spore-bearing organ in which the spore is attached to a stalk, typically found in certain fungi.

“The zygosperm of the fungus was observed under the microscope.”

2. noun

A structure in which two haploid nuclei fuse to form a diploid nucleus during sexual reproduction in certain organisms.

“The zygosperm of the algae played a crucial role in its life cycle.”