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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Metagenesis refers to?

1. The presence of different morphic forms
2. Alternation of generation between asexual and sexual phrases of an organism
3. Occurrence of a drastic change in the form during post-embryonic development
4. Presence of a segmented body and parthenogenic mode of reproduction

Subtopic:  Phylum Coelenterata |
 86%
From NCERT
NEET - 2015
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Body having meshwork of cells, internal cavities lined with food filtering flagellated Cells and indirect development is the characteristics of phylum?

1. Coelenterata

2. Porifera

3. Mollusca

4. Protozoa

Subtopic:  Phylum Porifera |
 80%
NEET - 2015
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Which of the following characteristics is mainly responsible for the diversification of insects on land:

1. Segmentation
2. Bilateral symmetry
3. Exoskeleton
4. Eyes

Subtopic:  Phylum Arthropoda |
 72%
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 |
 51%
From NCERT
NEET - 2015
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Which of the following animals is not viviparous?
1. Flying fox (bat)
2. Elephant
3. Platypus
4. Whale

Subtopic:  Study of Aves & Mammals |
 85%
From NCERT
NEET - 2015
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Select the Taxon mentioned that represents both marine and freshwater species:

1. Echinoderms

2. Ctenophora

3. Cephalochordata

4. Cnidaria

Subtopic:  Phylum Coelenterata |
 63%
From NCERT
AIPMT - 2014
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Planaria possess a high capacity of:

1. metamorphosis

2. regeneration

3. alternation of generation

4. bioluminescence

Subtopic:  Phylum Ctenophora & Platyhelminthes |
 94%
From NCERT
AIPMT - 2014
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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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Which group of animals belongs to the same phylum?
1. Earthworm, Pinworm, Tapeworm
2. Prawn, Scorpion, Locusta
3. Sponge, Sea anemone, Starfish
4. Malarial parasite, Amoeba, Mosquito

Subtopic:  Phylum Arthropoda |
 86%
From NCERT
AIPMT - 2013
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