In chordates, the tail is:

1. Post anal and segmented
2. Post anal and unsegmented
3. Pre anal and segmented
4. Pre anal and unsegmented


 

Subtopic:  Phylum Chordata |
 60%

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The most important reason for the fact that reptiles were the first animals to be successful on land is:

1. Internal fertilization
2. Skin covered with scales
3. Partially divided ventricles
4. Presence of amnion


 

Subtopic:  Study of Reptilia |
 75%
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Euplectella [Venus Flower Basket], shown in the figure below, belongs to:

1. Porifera 2. Cnidaria
3. Ctenophora 4. Platyhelminthes
Subtopic:  Phylum Porifera |
 66%

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Pinworm, Hookworm, and Filaria worm belong to:

1. Annelida 2. Platyhelminthes
3. Aschelminthes 4. Arthropoda
Subtopic:  Phylum Aschelminthes |
 81%
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Bilharzia is caused by a/an:
1. Flatworm
2. Roundworm
3. Annelid
4. Arthropod

Subtopic:  Phylum Ctenophora |
 69%

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Which of the following is not a character of deuterostomes?
1. Radial cleavage

2. Schizocoelous coelom

3. Indeterminate cleavage

4. Blastopore forms anus

Subtopic:  Basis of Classification |
 74%

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Icthyophis is a/an:

1. Tunicate chordate 2. Flightless bird
3. Limbless amphibian 4. Egg-laying mammal
Subtopic:  Study of Amphibians |
 89%
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Which of the following does not belong to Protostomia?
1. Annelids
2. Mollusks
3. Echinoderms
4. Arthropods

Subtopic:  Basis of Classification |
 71%

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Approximately what percentage of existing animal species are invertebrates?

1. 20% 2. 50%
3. 70% 4. 95%
Subtopic:  Basis of Classification |
 73%

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Water exits from a sponge through the:

1. Spicule 2. Choanocyte
3. Amoebocyte 4. Osculum
Subtopic:  Phylum Porifera |
 90%
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