Q. No.Given below are two statements.
In light of the above statements, choose the most appropriate answer from the options given below.
1. Both statement I and statement II are true
2. Both statement I and statement II are false
3. Statement I is correct but statement II is false
4. Statement I is incorrect but statement II is true
| Statement I: | All chordates are vertebrates. |
| Statement II: | All the vertebrates are chordates but all the chordates are not vertebrates. |
In light of the above statements, choose the most appropriate answer from the options given below.
1. Both statement I and statement II are true
2. Both statement I and statement II are false
3. Statement I is correct but statement II is false
4. Statement I is incorrect but statement II is true
Subtopic: Â Phylum Chordata |
 82%
Level 1: 80%+
Hints
Match items in column-I with those in column-II and choose the correct option.
| Column-I | Column-II | ||
| A. | Cyclostomata | (i) | Mouth without jaws |
| B. | Chondrichthyes | (ii) | Exclusively oviparous |
| C. | Aves | (iii) | Gills without operculum |
| D. | Mammalia | (iv) | Unique in possessing hair |
| A | B | C | D | |
| 1. | (i) | (ii) | (iii) | (iv) |
| 2. | (ii) | (iii) | (iv) | (i) |
| 3. | (i) | (iii) | (ii) | (iv) |
| 4. | (ii) | (i) | (iv) | (iii) |
Subtopic: Â Phylum Chordata |Â Comparative study of Cartilagenous & Bony Fishes |Â Study of Aves & Mammals |
 87%
Level 1: 80%+
Hints
Match column-I with column-II and choose the correct option.
| Column I | Column II | ||
| a. | Asterias | (i) | Notochord in larval tail |
| b. | Balanoglossus | (ii) | Spiny body |
| c. | Ascidia | (iii) | Cloaca present |
| d. | Hyla | (iv) | Worm-like marine animal |
| a | b | c | d | |
| 1. | (i) | (ii) | (iii) | (iv) |
| 2. | (iv) | (ii) | (iii) | (i) |
| 3. | (ii) | (iii) | (iv) | (i) |
| 4. | (ii) | (iv) | (i) | (iii) |
Subtopic: Â Phylum Echinodermata |Â Phylum Hemichordata |Â Phylum Chordata |Â Study of Amphibians |
 88%
Level 1: 80%+
Hints
Match column -I with column-II and choose the correct option:
| Column-I | Column-II | ||
| a. | Three-chambered heart with one incompletely divided ventricle | (i) | Myxine |
| b. | Jawless vertebrate with a cartilaginous vertebral column | (ii) | Chaetopleura |
| c. | Soft, unsegmented body and has a structure that helps in both respiration and excretion | (iii) | Calotes |
| d. | Ventral mouth, gills without operculum, and skin with placoid scales | (iv) | Scoliodon |
| 1. | a(i), b(ii), c(iii), d(iv) |
| 2. | a(iv), b(iii), c(ii), d(i) |
| 3. | a(ii), b(iv), c(i), d(iii) |
| 4. | a(iii), b(i), c(ii), d(iv) |
Subtopic: Â Phylum Mollusca |Â Phylum Chordata |Â Comparative study of Cartilagenous & Bony Fishes |Â Study of Reptilia |
 84%
Level 1: 80%+
Hints
Read the following statements (a to d) and choose the option which states them as True (T) or False (F) correctly
| (a) | All vertebrates are chordates but all chordates are not vertebrates |
| (b) | All vertebrates have paired appendages which may be fins or limbs |
| (c) | All vertebrates bear jaw |
| (d) | All aquatic animals which bear fins are placed in superclass Pisces |
| a | b | c | d | |
| 1. | T | F | F | F |
| 2. | T | T | F | F |
| 3. | T | F | F | T |
| 4. | T | F | T | T |
Subtopic: Â Phylum Chordata |
Level 4: Below 35%
Hints
Match items in column-I with those in column-II and choose the correct option:
| Column-I | Column-II | ||
| a. | Planaria | (i) | Indirect development |
| b. | Ctenoplana | (ii) | Gills are covered by an operculum on each side |
| c. | Petromyzon | (iii) | Possess high regeneration capacity |
| d. | Exocoetus | (iv) | Migrates for spawning to freshwater |
| 1. | a(i), b(ii), c(iii), d(iv) |
| 2. | a(iii), b(iv), c(ii), d(i) |
| 3. | a(iii), b(i), c(iv), d(ii) |
| 4. | a(iii), b(ii), c(i), d(iv) |
Subtopic: Â Phylum Ctenophora |Â Phylum Chordata |Â Comparative study of Cartilagenous & Bony Fishes |
 91%
Level 1: 80%+
Hints
Match column-I with column-II and choose the correct option
| Column -I | Column-II | ||
| A. | Protochordates | (i) | Homoiothermous |
| B. | Aves | (ii) | Circular mouth without jaws |
| C. | Agnatha | (iii) | Exclusively marine |
| D. | Pisces | (iv) | Streamlined body and bear fins |
| A | B | C | D | |
| 1. | (i) | (ii) | (iv) | (iii) |
| 2. | (iii) | (i) | (ii) | (iv) |
| 3. | (iv) | (i) | (iii) | (ii) |
| 4. | (iv) | (iii) | (ii) | (i) |
Subtopic: Â Phylum Chordata |Â Super Class Pisces & its General Characteristics |
 89%
Level 1: 80%+
Hints
| Assertion (A): | All vertebrates are chordates but all chordates are not vertebrates |
| Reason (R): | Protochordates are chordates in which vertebral column is absent throughout their life |
In the light of above statements choose the correct answer from the options given below
| 1. | Both (A) and (R) are true but (R) is not the correct explanation of (A) |
| 2. | Both (A) and (R) are true but (R) is the correct explanation of (A) |
| 3. | (A) is true but (R) is false |
| 4. | (A) is false but (R) is true |
Subtopic: Â Phylum Chordata |
Level 3: 35%-60%
Hints
| Assertion(A): | The primary character of chordates is the presence of a dorsal hollow nerve cord. |
| Reason(R): | Vertebral column is derived from the notochord. |
| 1. | Both (A) and (R) are true and (R) is the correct explanation of (A). |
| 2. | Both (A) and (R) are true but (R) is not the correct explanation of (A). |
| 3. | (A) is true but (R) is false. |
| 4. | Both (A) and (R) are false. |
Subtopic: Â Phylum Chordata |
 78%
Level 2: 60%+
Hints
| Assertion (A): | Respiration occurs through the general body surface in Cephalochordates. |
| Reason (R): | Digestive tract is incomplete in Cephalochordates. |
| 1. | Both (A) and (R) are true and (R) is the correct explanation of (A). |
| 2. | Both (A) and (R) are true but (R) is not the correct explanation of (A). |
| 3. | (A) is true but (R) is false. |
| 4. | Both (A) and (R) are false. |
Subtopic: Â Phylum Chordata |
 62%
Level 2: 60%+
Hints
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