Phylum Chordata

Q. The gill-slits of chordates occur in:

1. Buccal cavity of aquatic animals
2. Pharynx of all land vertebrates
3. Pharynx of all chordates' embryos and pharynx of aquatic adult chordates
4. Pharynx of all aquatic and land vertebrates in adults as well as in their embryos

Q. In which of the following animal post-anal tail is found

1. Earthworm
2. Lower invertebrate
3. Scorpion
4. Snake

Q. Phylum Chordata does not include:

1. Urochordates
2. Cephalochordates
3. Vertebrates
4. Hemichordates

Q.

Animals with a double ventral notochord, dorsal nerve cord, pharyngeal gill slits and a post anal tail are placed in the highly evolved phylum called_____.

1. Invertebrata

2. Vertebrata

3. Hemichordata

4. Chordata

Q.

Are Chondrichthyes amniotes?

Q.

Animals with notochord are called

1. Vertebrates

2. Chordates

3. Hemichordates

4. Both A and B

Q. Phylum Chordata is characterised by the presence of
A. notochord
B. dorsal hollow nerve cord
C. paired pharyngeal gill slits

1. A and B only
2. A and C only
3. B and C only
4. A, B and C

Q. Which among the following are the characteristics of Phylum Chordata?

1. Pharyngeal gill slits
2. Pre-anal tail
3. Dorsal hollow nerve cord
4. Notochord

Q.

How animals are classified based on the presence of notochord?

Q.

Based on the occurrence of the notochord, chordates are subdivided into ___________________ & ____________________.

1. Vertebrates & Invertebrates

2. Non-chordates & Chordates

3. Protochordata & Vertebrata

4. Vertebrata & Invertebrata