Explanation:
B
Ascaris sperm are amoeboid, asymmetrical, and have tails. Their maturation is completed in vas deferens. Male and female copulate in human intestine, by amoeboid motility, the sperm travel mainly localized in pseudopodia to the uterus, seminal receptacle where they fertilize the ovum, egg develops in soil and form rhabditiform larva which moults further into second rhabditiform larva (Juvenile). Major sperm protein (MSP) $16 \%$ of total protein sperm.