Animal Kingdom

Which one of the following is a mammal?

1. Crocodile
2. Whale
3. Penguin
4. Shark

Which animal belongs to the phylum Mollusca?

1. Starfish
2. Pila
3. Cockroach
4. Earthworm

Which class of Chordata is characterized by feathers?

1. Mammalia
2. Aves
3. Reptilia
4. Amphibia

Adult echinoderms generally exhibit:

1. Bilateral symmetry
2. Radial symmetry
3. Asymmetry
4. Spherical symmetry

Which one of the following is a pseudocoelomate?

1. Planaria
2. Ascaris
3. Earthworm
4. Prawn

Which of the following animals possesses a notochord at least during some stage of its life?

1. Cockroach
2. Earthworm
3. Frog
4. Hydra

Water vascular system is a characteristic feature of:

1. Arthropoda
2. Mollusca
3. Echinodermata
4. Chordata

Which phylum is characterized by a chitinous exoskeleton and jointed appendages?

1. Mollusca
2. Arthropoda
3. Echinodermata
4. Annelida

Metameric segmentation is best represented by:

1. Ascaris
2. Earthworm
3. Snail
4. Starfish

The first phylum to exhibit a true coelom is:

1. Platyhelminthes
2. Nematoda
3. Annelida
4. Cnidaria

Flame cells are associated with:

1. Circulation
2. Digestion
3. Excretion and osmoregulation
4. Respiration

Which of the following is a triploblastic, bilaterally symmetrical, and acoelomate animal?

1. Hydra
2. Planaria
3. Earthworm
4. Starfish

Cnidoblasts are specialized cells found in:

1. Platyhelminthes
2. Cnidaria
3. Mollusca
4. Arthropoda

Which characteristic is unique to members of Phylum Porifera?

1. Presence of radial symmetry
2. Body perforated by numerous pores and a canal system
3. Segmented body
4. Jointed appendages