Echiura (Spoon Worms) Flashcards
1
Q
Apomorphies in Echiura
A
Fused segments, 2 posterior rings of chaetae (for digging), Intestinal Siphon,
2
Q
Lifestyle of Echiura
A
Marine, U-shaped burrows or crevice, deposit/filter feeders
3
Q
Internal Systems of Echiura
A
Ventral nerve chord, Long coiled gut + siphon, simple hemal (circulatory) system
4
Q
Male Echiura
A
Miniature ciliated individuals, live in genital sac of female
5
Q
Reproduction in Echiura
A
External Fertilization, Trocophore larva (free swimming, any that land on female become male)
