Tag: characteristics of vertebrates

Questions Related to characteristics of vertebrates

Axis vertebra is identified by ________________.

zoology animal diversity - ii (phylum: chordata) vertebrates characteristics of vertebrates classification of organisms

  1. Sigmoid notch

  2. Deltoid ridge

  3. Odontoid process

  4. Centrum

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Correct Option: C

Interstitial fluid resembles ____________.

zoology animal diversity - ii (phylum: chordata) vertebrates characteristics of vertebrates classification of organisms

  1. Sea water

  2. Fresh water

  3. Ground water

  4. None of these

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Correct Option: A

Which one of the following invertebrates is a deuterostome and enterocoelous coelomate ___________.

zoology animal diversity - ii (phylum: chordata) vertebrates characteristics of vertebrates classification of organisms

  1. Pila

  2. Ascaris

  3. Aphrodite

  4. Asterias

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Correct Option: D
Explanation:

Echinodermata and all chordates are deuterostome and enterocoelous.

Match column I with column II and select the correct option from the given codes.

Column  I Column II
A.  Cyclostomes (i) Hemichordata
B.  Aves (ii) Urochordata
C.  Tunicates (iii) Agnatha
D.  Balanoglossus (iv) Pisces
E.  Osteichthyes (v) Tetrapod
zoology animal diversity - ii (phylum: chordata) vertebrates characteristics of vertebrates classification of organisms

  1. A-(i), B-(ii), C-(iii), D-(iv), E-(v)

  2. A-(ii), B-(iii), C-(iv), D(i), E-(v)

  3. A-(iii), B-(v), C-(ii), D-(i), E-(iv)

  4. A-(iii), B-(i), C-(v), D-(ii), E-(iv)

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Correct Option: C
Explanation:

(A) Cyclostomes - Agnatha

(B) Aves - Tetrapoda
(C) Tunicates - Urochordata
(D) Balanoglossus - Hemichordata
(E) Osteichthyes - Pisces
So, the correct answer is (c).

Common name of Petromyzon is

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

  1. Lancet

  2. Hagfish

  3. Acornworm

  4. Lamprey

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Correct Option: D
Explanation:

Sea Lamprey or Petromyzon is an agnathan. It is a marine organism. It lacks jaws and resembles an eel. It has a sucker-like mouth that is involved in filter feeding. It has seven brachial openings behind its eyes. They are anadromous and are usually found at depths of around 4000 m and can tolerate temperature ranges from 1.0 and 20 °C.

So, the correct answer is 'Lamprey'.

Vertebrates without jaws belong to 

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

  1. Urochordata

  2. Hemichordata

  3. Agnatha

  4. Gnathostomata

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Correct Option: C
Explanation:

Agnathans are basically primitive jawless fishes. They include lampreys and hagfishes. They usually have soft, cylindrical bodies that lack scales. In some species, separate external gill slits are present, while they open via a single pore in others. They have a suctorial or a filter-feeding mouth and they lack jaws.

So, the correct answer is 'Agnatha'.

Which one of the following pairs of animals are jaw-less fishes?

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

  1. Lampreys and hag fishes

  2. Guppies and hag fishes

  3. Lampreys and eels

  4. Mackerels and rohu

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Correct Option: A
Explanation:

The class Agnatha consists of a group of animals, that lack jaws and paired fins. There are two living groups of Agnatha, the lampreys, and the hagfish. 

So, the correct answer is option A.

The type of tail seen in Cyclostomata is 

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

  1. Isocercal.

  2. Homocercal.

  3. Heterocercal.

  4. Protocercal.

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Correct Option: D
Explanation:

Cyclostomata is a group of chordates comprising of living jawless fishes, the lampreys, and hagfishes. Their tail is protocercal in cyclostomes, having a caudal fin extending around the end of the vertebral column. The protocercal tail is formed by the division of tail into two equal lobes supported by fins.

Hence, option D is correct.

The jawless vertebrate is 

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

  1. Crocodile

  2. Loris

  3. Hyla

  4. Fox

  5. Petromyzon

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Correct Option: E
Explanation:

Out of the given options, only Petromyzon is a jawless vertebrate, that is, it is an agnathan. In physical appearance, it resembles an eel. It has a sucker-like mouth that is involved in filter feeding. The rest of the examples are all gnathostomes or jawed vertebrates. 

So, the correct answer is 'Petromyzon'.

The larva of cyclostomates is known as 

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

  1. Lamprey

  2. Amphioxus

  3. Ascridian

  4. Ammocoete

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Correct Option: D
Explanation:

Cyclostomata is a group of chordates that comprises the living jawless fishes, the lampreys, and hagfishes. They lay numerous eggs, about 1mm in diameter and lodge in the gravel around the nest. The egg hatches into an ammocoete larva, which is a blind, worm-like animal that burrows in the slit.

So, the correct answer is option D.