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:  Phylum Echinodermata | Phylum Hemichordata | Phylum Chordata | Study of Amphibians |
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Assertion (A): Balanoglossus possess external fertilization.
Reason (R): Saccoglossus undergo direct development during their life cycle.
 
1. If both assertion and reason are true, the reason is the correct explanation of the assertion.
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:  Phylum Hemichordata |
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Choose the correct match:
1. Branchostoma : Notochord persist through out the life
2. Ascidia : Notochord present in larva and disappears in adult
3. Doliolum : Notochord present in the larval tail only
4. More than one option is correct 
Subtopic:  Phylum Hemichordata | General Introduction: Vertebrates & Agnatha |
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Column-I contain larval stages and column-II contain the groups to which they belong. Match them correctly and choose the right option"
Column-I Column-II
A. Planula i. Annelida
B. Tornaria II. Mollusca
C. Trochophore iii. Arthropoda
D. Bipinnaria iv. Hemichordata
E. Glochidium v. Echinodermata
vi. Coelenterata
1. A = vi, B = iv, C = i, D = v, E = ii
2. A = ii, B = v, C = i, D = iv, E = vi
3. A = v, B = iv, C = iii, D = ii, E = i
4. A = iv, B = iii, C = ii, D = i, E = v
Subtopic:  Phylum Annelida | Phylum Arthropoda | Phylum Mollusca | Phylum Echinodermata | Phylum Hemichordata | Phylum Chordata |
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