Tag: classifications of chordata

Questions Related to classifications of chordata

Unpaired external naris occurs in

biology diversity in living world characteristics of vertebrates classification of vertebrata classifications of chordata

  1. Petromyzon

  2. Torpedo

  3. Anabas

  4. Solea

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Correct Option: A
Explanation:
A. Petromyzon, known as Lamprey, belong to class Cyclostomata under superclass Agnatha (jawless vertebrates).
B. Torpedo, known as an electric ray, is a bottom-living marine fish which is famous for discharging electricity.
C. Anabas, known as climbing perch is a common freshwater fish that can also live out of water for some time.
D. Solea, known as a common sole, is a flatfish that is prized for food.
Unpaired external naris (nostrils) occur in Petromyzon. So, the correct answer is 'Petromyzon'.

An example of Agnatha (jawless vertebrate)/cyclostomata is

biology diversity in living world characteristics of vertebrates classification of vertebrata classifications of chordata

  1. Labeo rohita

  2. Scoliodon

  3. Rana tigrina

  4. Petromyzon

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Correct Option: D
Explanation:
A. Labeo rohita belongs to class Osteichthyes.
B. Scoliodon belongs to class Chondrichthyes.
C. Rana tigrina belongs to class Amphibia.
D. Petromyzon belongs to class Cyclostomata under superclass Agnatha (the Jawless vertebrates).
So, the correct answer is 'Petromyzon'.

A jawless fish which lays eggs in fresh water and whose ammocoete larvae after metamorphosis return to ocean is _____________.

biology diversity in living world characteristics of vertebrates classification of vertebrata classifications of chordata

  1. Entatretus

  2. Myxine

  3. Neomyxine

  4. Petromyzon

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Correct Option: D

Jawless vertebrates belong to the group

biology diversity in living world characteristics of vertebrates classification of vertebrata classifications of chordata

  1. Agnatha

  2. Gnathostomata

  3. Lagomorpha

  4. Prototheria

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Correct Option: A

Choose the correct statement.

biology diversity in living world characteristics of vertebrates classification of vertebrata classifications of chordata

  1. All pisces have gills covered by an operculum

  2. All mammals are viviparous

  3. All cyclostomata do not possess jaw and paired fins

  4. All reptiles have a three chambered heart

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Correct Option: C

Match the columns and select the correct option.

  Column I    Column II
a Cyclostomates p Hemichordata
b Aves q Urochordata
c Tunicates r Agnatha
d Batanoglossus s Pisces
e Osteichthyes t Tetrapod
biology diversity in living world characteristics of vertebrates classification of vertebrata classifications of chordata

  1. a - p, b - q, c - r, d - s, e - t

  2. a - q, b - r, c - s, d - p, e - t

  3. a - r, b - p, c - t, d - q, e - s

  4. a - r, b - t, c - q, d - p, e - s

  5. a - t, b - r, c - q, d - p, e - s

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Correct Option: C

Myelin sheath is not found around nerve fibres of.

biology diversity in living world characteristics of vertebrates classification of vertebrata classifications of chordata

  1. Fishes

  2. Egg laying mammals

  3. Frog

  4. Cyclostomates

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Correct Option: D

Air bladder is present in _________.

biology diversity in living world characteristics of vertebrates classification of vertebrata classifications of chordata

  1. Petromyzon

  2. Scoliodon

  3. Labeo

  4. Frog

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Correct Option: A

Find out the correct match in the three columns.

biology diversity in living world characteristics of vertebrates classification of vertebrata classifications of chordata

  1. Adamsia - Radially symmetrical - Porifera

  2. Petromyzon - Ectoparasite - Cyclostomata

  3. Ichthyophis - Terrestrial - Reptilia

  4. Isimutus - Body covered by chitinous exoskeleton - Pisces

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Correct Option: B

This class of animals are all ectoparasites on some fishes ______________.

biology diversity in living world characteristics of vertebrates classification of vertebrata classifications of chordata

  1. Amphibia

  2. Osteichthyes

  3. Reptilia

  4. Cyclostomata

  5. Chondrichthyes

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Correct Option: D