Birds are not characterized by:

(1) Forelimbs modified into wings

(2) Fully ossified endoskeleton

(3) Skin dry without glands except for oil gland

(4) Oviparous and external fertilization

Subtopic:  Study of Aves & Mammals |
 73%
From NCERT
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Echinoderms are not characterized by:

1. An absence of excretory system

2. Bisexual animals

3. Usually external fertilization

4. Indirect development with free swimming larva

Subtopic:  Phylum Echinodermata |
 63%
From NCERT
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Operculum and an air bladder is present in :

(1) Clarias

(2) Pristis

(3) Trygon

(4) Carcohrodon

Subtopic:  Comparative study of Cartilagenous & Bony Fishes |
 71%
From NCERT
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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%
From NCERT
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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%
From NCERT
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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%
From NCERT
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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%
From NCERT
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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%
From NCERT
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The phylum with exclusively marine animals is:

(1) Porifera                         

(2) Cnidaria

(3) Ctenophora                   

(4) Platyhelminthes

 

Subtopic:  Phylum Ctenophora & Platyhelminthes |
 73%
From NCERT
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