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:
1. Platypus is oviparous
2. Bats have feather
3. Elephant is ovoviviparous
4. Diaphragm is absent in them

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