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

What is true for Mammalia?

Which of the following character is not found in all the chordates:

1. Diaphragm

2. Coelom

3. Pharyngeal gill clifts

4. Dorsal nerve cord

Which gland secretes odourous secretion in mammals:

1. Bartholins

2. Prostate

3. Anal gland

4. Liver-bile

The similarity between Ascaris lumbricoides and Anopheles stephensi is:
1. Sexual dimorphism
2. Metamerism
3. Anaerobic respiration
4. Endoparasitism

Which of the following animals have scattered cells with cell–tissue grade organization:

1. Sponge

2. Hydra

3. Liver fluke

4. Ascaris

In Hydra, waste material of food digestion and nitrogenous waste material are removed from:
1.  Mouth and mouth
2.  Body wall and body wall
3.  Mouth and body wall
4.  Mouth and tentacles

In which of the following animal post-anal tail is found:
1.  Earthworm
2.  Lower invertebrate
3.  Scorpion
4.  Snake