In contrast to Annelids, Platyhelminths show:
1. Absence of body cavity
2. Presence of pseudocoelom
3. Radial symmetry
4. Bilateral symmetry 

Which of the following characters is not typical of the class Mammalia:

1. Alveolar lungs

2. Ten pairs of cranial nerves

3. Seven cervical vertebrae

4. Thecodont dentition 

From the following statements select the wrong one:
 

Hollow-air filled bones (pneumatic bones) occur in:

Solenocytes occur in:
1.  Platyhelminthes
2.  Arthropoda
3.  Annelida
4.  Aschelminthes

Which characteristic is true for Obelia?
1.  Metagenesis
2.  Morphogenesis
3.  Apolysis
4.  Pedogeny

The animals with bilateral symmetry in the young stage and radial pentamerous symmetry in the adult stage, belong to the phylum:

In Arthropoda, the head and thorax are often fused to form a cephalothorax, but in which one of the following classes, is the body divided into head, thorax, and abdomen?

1. Myriapoda

2. Crustacea

3. Arachnida and Crustacea

4. Insecta 

One of the following is a very unique feature of the mammalian body:

1. Presence of diaphragm

2. Four-chambered heart

3. Rib cage

4. Homeothermy

What is true for Mammalia: