Phylum Chordata

Q.

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

Q. The notochord is persistent throughout life in

1. urochordates and cephalochordates
2. urochordates and vertebrates
3. all chordates
4. cephalochordates

Q.

How many bones have a shark?

Q.

What is notochord? What is its function?

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

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

Q.

Write down four characters of Chordata.

Q. Which of the following animal has an amniotic egg?

1. fish
2. all of the above
3. frog
4. sea turtle

Q. Which among the following is not a fundamental feature of chordates, found exclusively only in them?

1. Dorsal nerve cord
2. Closed circulatory system
3. Notochord
4. Pharyngeal gill slits

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

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

Q.

Animals with notochord are called

1. All of these

2. Invertebrates

3. Chordates

4. Triploblasticans

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.

Mention the features possessed by all chordates.

Q.

Which phylum represents the most advanced group of animals?

Q.

Are sharks osmoconformers?

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. 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.

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

1. lungs

2. dorsal nerve cord

3. diaphragm

4. feathers

Q.

Statement I: The common name of Exocetus is flying fish.
Statement II: Exocetus has wing like pectoral fins.

1. Both statement I and statement II are true and statement II is the correct explanation of statement !

2. Both statement I and statement II are true but statement II is not the correct explanation of statement I

3. Statement I is true but statement II is false

4. Statement I is false but statement II is true

Q.

What are the characteristics of Chondrichthyes and Osteichthyes?

Q. Which statement is incorrect?

1. All vertebrates are chordates.
2. All urochordates are protochordates.
3. All cyclostomes are agnathans.
4. All chordates are vertebrates.

Q.

Choose the correct option from the list which is not an example of cartilaginous fish:

1. Sawfish

2. Stingray

3. Rohu

4. Shark

Q. The notochord is persistent throughout life in

1. urochordates and cephalochordates
2. cephalochordates
3. urochordates and vertebrates
4. all chordates

Q. Identify the correct statement.

1. Cranium is present in all chordates
2. Metamerism is found in chordates
3. Nerve cord is present on the ventral side in chordates
4. Two pairs of limbs are present in all tetrapods

Q.

Do hemichordats have notochord? Please give a detailed explanation

Q.

Give an example of the following

(a) Roundworm

(b) Fish possessing poison sting

(c) A limbless reptile / amphibian

(d) An oviparous mammal

Q.

Do chordates have a 4 chambered heart?

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. 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. Phylum Chordata does not include:

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

Q.

It is believed that true chordates have evolved from the phylum ___.

1. Echinodermata

2. Hemichordata

3. Cephalochordata

4. Urochordata