Kingdom Animalia 3 Flashcards
Phylum with an endoskeleton of calcareous ossicles
Echinodermata
Organisation in Echinodermata
organ level
Symmetry in Echinodermata
Adult :- Radial
Larvae :-Bilateral
Echinodermata are
→triploblastic
→coelomate
Mouth in Echinodermata is on which side
Ventral(lower)
Anus in Echinodermata is present on which side
Dorsal(upper)
The most distinctive feature of Echinoderms is the presence of
Water vascular system
Water vascular system in echinodermata helps in
→locomotion
→capture
→transport of food
→respiration
Excretory system in echinodermata is
absent
Sexes in Echinodermata are
Separate
Reproduction in Echinodermata is
Sexual
Fertilisation in Echinodermata is usually
External
Development in Echinodermata with free-swimming level is
Indirect
Asterias(star fish) is a
Echinodermata
Echinus(sea urchin) is a
Echinodermata
Antedon(sea lily) is a
Echinodermata
Cucumaria(sea cucumber) is a
Echinodermata
Ophiura(brittle star) is a
Echinodermata
Which phylum was earlier considered as a sub phylum under phylum chordata
Hemichordata
Hemichordates have a rudimentary structure in the collar region which is similar to notochord
Stomochord
Worm like marine animals with organ system level of organisation comes under
Phylum Hemichordata
Hemichordates are
→bilaterally
→triploblastic
→coelomate
→cylindrical bodied
Hemichordates body consists of
an anterior proboscis
collar.
Trunk
Circulatory system in hemichordates is
Open type
