Radially arrayed sperm cluster wrapped by gelatinous membrane is called:

Correct option is B

→ Spermatozeugmata are organized clusters of sperm surrounded by a gelatinous matrix.
→ This structure helps in protecting sperm and improving fertilization efficiency in water.
→ Seen in several teleosts with external fertilization.
Information Booster:
→ The gelatinous membrane keeps sperm together until released during spawning.
→ Enhances sperm longevity in aquatic environments.
→ Helps in synchronized release of sperm near eggs for better fertilization.
Additional Information (Other Options):
(a) Spermatozoa: Mature, free sperm cells.
(c) Spermatid: Immature sperm stage before maturation.
(d) Spermatogonia: Earliest germ cells in testes.