Fill in the table “Comparative characteristics of the main types of invertebrates”

bystudin | October 30, 2020 | Education

Signs	Sarcodes and flagellates	Ciliates	Coelenterates	Flat worms	Round worms	Annelids	Molluscs	Articular-legged
Unicellular or multicellular	0	0	M	M	M	M	M	m
Symmetry type	D	D	L	D	D	D	D	d
Number of germ layers	0	0	2	2	2	3	3	3
Presence of body parts	–	–	–	–	–	–	+	+
The presence of organ systems
1) nervous	–	–	+	+	+	+	+	+
2) digestive	–	–	+	+	+	+	+	+
3) excretory	–	–	+	+	+	+	+	+
4) sexual	–	–	+	+	+	+	+	+
5) circulatory	–	–	–	–	+	+	+	+
6} respiratory	–	–	–	–	+	+	+	+
Having an anus	–	–	–	–	+	+	+	+
Reproduction	+	+	+	+	+	+	+	+

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