Diploblastic animals body is arranged into…….layers.
a) ectoderm and endoderm
b) ectoderm and mesoderm
c) mesoderm and endoderm
d) ectoderm, mesoderm and endoderm
Explanation: the only diploblastic animals are coelenterates
Triploblastic animals body is arranged into…….layers.
a) ectoderm and endoderm
b) ectoderm and mesoderm
c) mesoderm and endoderm
d) ectoderm, mesoderm and endoderm
Explanation all phyla from platyhelminthes to chordates are triploblastic
Complexity In Animals:
According to modern classification, animals are classified into ……sub-kingdoms.
a) two
b) three
c) four
d) five
Explanation: 1. Parazoa and 2. Eumetazoa
The simplest animals which do not form tissues are classified in…….
a) parazoa
b) eumetazoa
c) protozoa
d) both a and b
Explanation: all other phyla are classified into sub-kingdom eumetazoa
On the basis of symmetry, eumatozoan animals are classified into …….groups.
a) two
b) three
c) four
d) five
Explanation: 1. Radiata (with radial symmetry) and 2. Bilateria (with bilateral symmetry)
