Phylum Chordata

Q.

The nerve chord in earthworm originates from

1. Sub-pharyngeal ganglia and has a fused pair of ganglia in each segment from the 5th to the last

2. Supra-pharyngeal ganglia and has a fused pair of ganglia in each segment from the 3rd to the last

3. Sub-pharyngeal ganglia and has a fused pair of ganglia in each segment from the 6th to the last

4. Supra-pharyngeal ganglia and has a fused pair of ganglia in each segment from the 4th to the last

Q.

“All vertebrates are chordates but all chordates are not vertebrates”. Justify the statement.

Q.

22) Which of the following is a characteristic of Chordata

Q. The simplest type of canal system in Porifera is

1. Ascon type
2. Leucon type
3. Radial type
4. Sycon type

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.

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. Which among the following is a shared characteristic feature of all chordates?

1. Scales
2. Jaws
3. Vertebrae
4. A dorsal hollow nerve cord

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

Q.

Balanoglossus is a:

1. Hemichordate

2. Protozoa

3. Vertebrate

4. Non chordate

Q.

Which of the following statements is true?

1. Invertebrates posses a dorsal nerve cord

2. Non chordates have a vertebral column

3. All chordates are vertebrates

4. All vertebrates are chordate

Q. The members of chordates exhibit similarity in all the following features except

1. symmetry
2. circulatory system
3. dorsal nerve cord
4. mode of embryonic development

Q. Which of the following is a wrong statement?

1. Millipedes have two pairs of appendages in each segment of the body.
2. Prawn has two pairs of antennae.
3. Animals belonging to phylum Porifera are exclusively marine.
4. Nematocysts are characteristic of the phylum Cnidaria.

Q. Cell aggregate plan is found in

1. Cnidarians
2. Sponges
3. Flatworms
4. Roundworms

Q. Sycon beolngs to a group of animals, which are best described as

1. Unicellular or acellular
2. Multicellular without any tissue organization
3. Multicellular with a gastrovascular system
4. Multicellular having tissue organization, but no body cavity

Q. The largest clam is

1. Unio
2. Mytilus
3. Tridacna
4. Teredo

Q. "All vertebrates are chordates but all chordates are not vertebrates". Justify the statement.

Q. Why bony fishes and aquatic amphibians are ammonetelic in nature?

Q. Which among the following are the characteristics of phylum Porifera?

1. They are non-motile
2. They are asymmetric creatures
3. They are attached to a solid support
4. All of the above

Q. Whale Fish is a member of

1. Reptilia
2. Arthopoda
3. Coelenterata
4. Mammalia

Q.

Among the following, the common character found in all chordates is

1. Feathers

2. Lungs

3. Dorsal nerve cord

4. Diaphragm