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:
1. | Prawn has two pairs of antennae |
2. | Millipedes have two pairs of appendages in each segment of the body |
3. | Animals belonging to the phylum Porifera are exclusively marine |
4. | Nematocysts are characteristics of the phylum Cnidaria |
Hollow-air filled bones (pneumatic bones) occur in:
1. Mammals | 2. Reptiles |
3. Urodela | 4. Aves |
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:
1. | Mollusca | 2. | Cnidaria |
3. | Echinodermata | 4. | Annelida |
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:
1. Platypus is oviparous
2. Bats have feather
3. Elephant is ovoviviparous
4. Diaphragm is absent in them