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 |
 88%
Level 1: 80%+
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Consider the given two statements:
Assertion (A): Balanoglossus possess external fertilization.
Reason(R): Saccoglossus undergo direct development during their life cycle.
 
1. Both (A) and (R) are True and (R) correctly explains (A)
2. Both (A) and (R) are True and (R) does not correctly explain (A)
3. (A) is True, (R) is False
4. (A) is False, (R) is False
 
 
 
Subtopic:  Phylum Hemichordata |
 67%
Level 2: 60%+
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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 | Class Cyclostomata |
 82%
Level 1: 80%+
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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 |
Level 3: 35%-60%
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