A jawless fish, which lays eggs in freshwater and whose ammocoetes larvae after metamorphosis return to the ocean is?
1. Eptratretus
2. Myxine
3. Neomyxine
4. Petromyzon

Subtopic:  Comparative study of Cartilagenous & Bony Fishes |
 67%
From NCERT
NEET - 2015
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Which of the following represents the correct combination without any exception? 

Characteristic Class
(a) Mammary gland; hair on body; pinnae; two pairs of limbs Mammalia
(b) Mouth ventral; gills without operculum; skin with placoid scales; persistent notochord Chondrichthyes
(c) Sucking and circular mouth; jaws absent; integument without scales; paired appendages Cyclostomata
(d) Body covered with feathers; skin moist and glandular; lungs with air sacs; forelimbs from wings Aves
 
1. a 2. b
3. c 4. d
Subtopic:  Comparative study of Cartilagenous & Bony Fishes |
 50%
From NCERT
NEET - 2015
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A marine cartilaginous fish that can produce electric current is:

1. Pristis

2. Torpedo

3. Trygon

4. Scoliodon 

Subtopic:  Comparative study of Cartilagenous & Bony Fishes |
 78%
From NCERT
AIPMT - 2014
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Sharks and dogfishes differ from skates and rays by:
 
1. Gill slits are ventrally placed
2. Head and trunk are widened considerably
3. Distinct demarcation between body and tail
4. Their pectorals fins are distinctly marked off from cylindrical bodies

 
Subtopic:  Comparative study of Cartilagenous & Bony Fishes |
 52%
NEET - 2013
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Which one of the following pairs of animals is similar to each other pertaining to the feature stated against them?

1. Garden lizard and Crocodile - Three-chambered heart
2. Ascaris and Ancylostoma - Metameric segmentation
3. Sea horse and Flying fish - Cold-blooded (poikilothermal)
4. Pteropus and Ornithorhyncus - Viviparity
Subtopic:  Comparative study of Cartilagenous & Bony Fishes | Super Class Pisces & its General Characteristics |
 67%
From NCERT
AIPMT - 2012
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What will you look for to identity the sex of the following? Select the correct match.
 
1. Male frog – a copulatory pad on the first digit of the hind limb
2. Female cockroach – anal cerci
3. Male shark – claspers borne on pelvic fins
4. Female Ascaris – sharply curved posterior end

Subtopic:  Comparative study of Cartilagenous & Bony Fishes |
 60%
From NCERT
AIPMT - 2011
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Which one of the following groups of animals is correctly matched with its one characteristic feature without even a single exception?
 
1. Chordata – possess a mouth provided with an upper and a lower jaw
2. Chondrichthyes – possess cartilaginous endoskeleton
3. Mammalia – give birth to young ones
4. Reptilia – possesses 3-incomplete heart with one incompletely divided ventricle.

Subtopic:  Comparative study of Cartilagenous & Bony Fishes |
 80%
From NCERT
AIPMT - 2011
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