1. Radial symmetry is shown by
a) Coelenterate
b) Platyhelminthes
c) Adult echinodermates
d) Both (a) and (c)
Explanation: Both (a) and (c)
2. Most of the sponges are
a) Bilateral
b) Radial
c) Biradial
d) Asymmetric
Explanation: Most of the sponges are asymmetric.
3. The first diploblastic animal is
a) Coelenterates
b) Platyhelminthes
c) Aschelminthes
d) Annelida
Explanation: The first diploblastic animal is coelenterates
4. The first triploblastic animal is
a) Coelenterates
b) Platyhelminthes
c) Aschelminthes
d) Annelida
Explanation: The first triploblastic animal is platyhelminthes
5. Triploblastic animal contains
a) Ectoderm
b) Mesoderm
c) Endoderm
d) All of these
Explanation: All of these
6. Aschelminthes are
a) Eucoelomate
b) Pseudocoelomate
c) Acoelomate
d) None of these
Explanation: Pseudocoelomate
7. Which of the following is acoelomate?
a) Porifera
b) Coelenterates
c) Platyhelminthes
d) All of these
Explanation: Platyhelminthes
8. Metameric segmentation is found in
a) Annelida
b) Arthropod
c) Both (a) and (b)
d) Platyhelminthes
Explanation: Metameric segmentation is found in annelida.
9. Notochord is derived from which layer?
a) Ectoderm
b) Mesoderm
c) Endoderm
d) All of these
Explanation: Mesoderm
10.Which of the following is correct about notochord?
a) Dorsally situated
b) Mesodermal in origin
c) Rod like
d) All of these
Explanation: All of these