In the case of Poriferans, the spongocoel is lined with flagellated cells called:

1. Oscula

2. Choanocytes

3. Mesenchymal cells

4. Ostia

Subtopic:  Phylum Porifera |
 89%
From NCERT
NEET - 2017
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Which of the following characteristic features always hold true for the corresponding group of animals? 

(a) Viviparous (1) Mammalia
(b) Possess a mouth with an upper and a lower jaw (2) Chordata
(c) 3- chambered heart with one incompletely divided ventricle (3) Reptilia
(d) Cartilaginous - Endoskeleton (4) Chondrichthyes

1. a

2. b

3. c

4. d

Subtopic:  Comparative study of Cartilagenous & Bony Fishes |
 79%
From NCERT
NEET - 2016
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Which of the following characteristics is not shared by birds and mammals?
1. Breathing using lungs
2. Viviparity
3. Warm-blooded nature
4. Ossified endoskeleton
Subtopic:  Study of Aves & Mammals |
 64%
From NCERT
NEET - 2016
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Which of the following features is not present in the phylum–Arthropoda?
1. Metameric segmentation
2. Parapodia
3. Jointed appendages
4. Chitinous exoskeleton
Subtopic:  Phylum Annelida | Phylum Arthropoda |
 80%
From NCERT
NEET - 2016
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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 |
 66%
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 phases 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 |
 88%
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 |
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 |
 86%
From NCERT
NEET - 2015
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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 |
 87%
From NCERT
AIPMT - 2013
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Match the name of the animal (Column I), with one characteristic (Column II), and the phylum/class (Column III) to which it belongs:

Column I Column II Column III
1. Ichthyophis terrestrial Reptilia
2. Limulus body covered by chitinous exoskeleton Pisces
3. Adamsia radially symmetrical Porifera
4. Petromyzon ectoparasite Cyclostomata
Subtopic:  General Introduction: Vertebrates & Agnatha |
 76%
From NCERT
AIPMT - 2013
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