in science: - write four distinguishing characters of phylum - echinodermata .........please answer fast .......it's really urgent friends ......
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General characteristics of Phylum Echinodermata
1.(Echinos: Spines; derma: Skin)
2.Kingdom: Animalia
3.Habitat: These are exclusively marine
4.Grade of organization: organ system grade
5.Germ layer: triploblastic
6.Symmetry: Adults are radially symmetrical while the larvae are bilaterally symmetrical.
7.Coelom: present ( coelomate)Body without segmentation
8.The shape of the body is flat, star like, spherical or elongated.
9.Head is absent
10.Presence of tube feet
11.Presence of water vascular system
12.Mouth is present on ventral side while anus is present on dorsal side
13.Respiration: by papule, gills or cloacal respiratory
14.Nervous system: absent, they are brainless organism.
15.Circulatory system: is reduced, heart is absent.Blood has no pigment. 16.Digestive system: complete
17.Excretory system: absent
18.Sexes: mostly dioecious, rarely monocious
19.Reproduction:Sexual: by gamatic fusion
Asexual: regeneration
20.Fertilization: external
21.Development: indirect with characteristic larvae
1.(Echinos: Spines; derma: Skin)
2.Kingdom: Animalia
3.Habitat: These are exclusively marine
4.Grade of organization: organ system grade
5.Germ layer: triploblastic
6.Symmetry: Adults are radially symmetrical while the larvae are bilaterally symmetrical.
7.Coelom: present ( coelomate)Body without segmentation
8.The shape of the body is flat, star like, spherical or elongated.
9.Head is absent
10.Presence of tube feet
11.Presence of water vascular system
12.Mouth is present on ventral side while anus is present on dorsal side
13.Respiration: by papule, gills or cloacal respiratory
14.Nervous system: absent, they are brainless organism.
15.Circulatory system: is reduced, heart is absent.Blood has no pigment. 16.Digestive system: complete
17.Excretory system: absent
18.Sexes: mostly dioecious, rarely monocious
19.Reproduction:Sexual: by gamatic fusion
Asexual: regeneration
20.Fertilization: external
21.Development: indirect with characteristic larvae
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