Identify the incorrectly matched pair:

 

Animals

Feature present in both

1.

Balanoglossus and Pinctada

Open circulatory system

2.

Branchiostoma and Ascidia

Persistent notochord

3.

Aplysia and Pheretima

True coelom

4.

Gorgonia and Pennatula

Cnidoblasts

Subtopic:  Phylum Chordata |
 67%
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Pteropus is a/an:

1. Limbless amphibian

2. Extinct reptile that evolved into mammals

3. Bony fish that migrates from sea water to fresh water for breeding

4. Mammal with flight

Subtopic:  Study of Aves & Mammals |
 71%
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The character that gives the Phylum Chordata its name is shown by:

 

1. A

2. B

3. C

4. D

Subtopic:  Phylum Chordata |
 68%
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The structure shown in the given diagram is characteristically seen in the Phylum:

  
1. Porifera
2. Ctenophora
3. Cnidaria
4. Molluska

Subtopic:  Phylum Coelenterata |
 80%
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An animal with the following body wall organization will not have:

1. Cepahilzation

2. Three germ layers

3. Bilateral symmetry

4. A complete digestive tract

Subtopic:  Basis of Classification:I | Basis of Classification:II | Basis of Classification |
From NCERT
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In some Bilateria, the body is of many segments that show serial repetition of parts. Such segments are called as:

(1) Myotomes

(2) Metameres

(3) Proglottides

(4) Comb plates

 

Subtopic:  Basis of Classification:II | Basis of Classification |
 95%
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The phylum with exclusively marine animals is:

(1) Porifera                         

(2) Cnidaria

(3) Ctenophora                   

(4) Platyhelminthes

 

Subtopic:  Phylum Ctenophora & Platyhelminthes |
 73%
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Chordates are not characterized by:

(1) Ventral nerve cord                   

(2) Post anal tail

(3) Gill slits                                  

(4) A notochord

 

Subtopic:  Phylum Chordata |
 79%
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Notochord is derived from embryonic:

(1) Ectoderm                   

(2) Mesoderm

(3) Endoderm                  

(4) Ectoderm and Mesoderm

 

Subtopic:  Basis of Classification:II | Basis of Classification |
 76%
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What is present between ectoderm and endoderm in diploblastic animals?

(1) Mesenteron                              

(2) Mesenchyme

(3) Mesorchium                             

(4) Mesoglea

 

Subtopic:  Basis of Classification:I | Basis of Classification |
 91%
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