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: Β Basis of Classification:II |Β Basis of Classification |
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The phylum with exclusively marine animals is:

(1) Porifera                         

(2) Cnidaria

(3) Ctenophora                   

(4) Platyhelminthes

 

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

(1) Ventral nerve cord                   

(2) Post anal tail

(3) Gill slits                                  

(4) A notochord

 

Subtopic: Β Phylum Chordata |
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Notochord is derived from embryonic:

(1) Ectoderm                   

(2) Mesoderm

(3) Endoderm                  

(4) Ectoderm and Mesoderm

 

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

(1) Mesenteron                              

(2) Mesenchyme

(3) Mesorchium                             

(4) Mesoglea

 

Subtopic: Β Basis of Classification:I |Β Basis of Classification |
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What is not true regarding Cnidarians?

(1) Body is made of distinct tissues but true organs have not evolved

(2) They are carnivores

(3) They may have two body forms – polyps and medusa

(4) The digestion is completely intra-cellular

 

Subtopic: Β Phylum Coelenterata |
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Ascaris is characterized by:

(1) Presence of true coelom but absence of metamerism

(2) Presence of true coelom and of metamerism

(3) Absence of true coelom but presence of metamerism

(4) Presence of neither true coelom nor metamerism

 

Subtopic: Β Phylum Aschelminthes |
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Identify the chordates in which the notochord persists in the adult?

(1) Tunicates                         

(2) Lancelets

(3) Cyclostomata          

(4) Bony fishes

 

Subtopic: Β Phylum Chordata |
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Which of the following is not a feature of Ctenophora?

(1) Diploblastic organisms with tissue level of organization

(2) Absence of Cnidocytes

(3) Presence of internal ciliated comb plates

(4) Bio-luminescence well marked in some members

 

Subtopic: Β Phylum Ctenophora & Platyhelminthes |
Β 67%
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In Amphibia:
I. Skin is moist without scales
II. A tympanum represents the ear
III. Fertilization is external
1. Only I and II are correct       

2. Only I and III are correct
3. Only II and III are correct            

4. I, II, III are correct

Subtopic: Β Study of Amphibians |
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