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4

Which of the following pairs of animals comprises jawless fishes?

A. Mackerals and rohu

B. Lampreys and hag fishes

C. Guppies and hag fishes

D. Lampreys and eels

Correct Answer :

B. Lampreys and hag fishes


Lampreys and hag fishes (Myxine) are unusual, jawless fish that comprise the order cyclostomata, so named because of the circular shape of the mouth. The brains of lampreys and hagfishes differ a lot, but they also show a large number of similarities, as do all craniate brains.

Related Questions

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4

Which of the following characteristic is probably most responsible for the great diversification of insects on land ?

A. Segmentation

B. Antennae

C. Bilateral symmetry

D. Exoskeleton

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4

Which of the following statement(s) is/are correct regarding phylum mollusca?

A. They are bilaterally symmetrical, triploblastic and coelomate animals.

B. Body is covered by a calcareous shell and is unsegmented with a distinct head, muscular foot and visceral hump.

C. The mouth contains a file-like rasping organ for feeding, called radula.

D. All of the above

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4

A student brought home a strange animal which he found outside under a rock. It had moist skin, a complete digestive tract, a ventral nerve cord, and had gone through torsion. Identify the phylum of the animal.

A. Porifera

B. Annelida

C. Mollusca

D. Echinodermata

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4

Identify the figures and select the correct option 
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A. A - Pseudocoelomate; B - Coelomate, C-Acoelomate

B. A - Coelomate, B - Pseudocoelomate, C- Acoelomate

C. A - Coelomate; B- Acoelomate; C - Pseudocoelomate

D. A - Coelomate; B- Acoelomate; C-Eucoelomate

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4

The given figure shows some characteristic features marked as chordates. Identify the correct labelling A,B,C and D. 
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A. A-Notochord; B-Post-anal part; C-Gill slits; D-Nerve cord

B. A-Nerve cord; B-Notochord; C-Post-anal part; D-Gill slits

C. A-Notochord; B-Nerve cord; C-Gill slits; D-Post-anal part

D. A-Gill slits; B-Post-anal part; C-Nerve cord; D-Notochord

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4

The combination of a true coelom and repeating body segmentation allows the annelids (unlike the anatomically simpler worms) to do which of the following?

A. Attain complex body shapes and thus locomote more precisely.

B. Move through loose marine sediments.

C. Be hermaphroditic.

D. Inject paralytic poisons into their prey.

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4

Which one of the following statement regarding coelom of given animals is correct?

A. Round worms (aschelminthes) are pseudocoelomates.

B. Molluscs are acoelomates.

C. Insects are pseudocoelomates.

D. Flatworms (platyhelminthes) are coelomates.

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4

Which of the following phylum is being described by the given statements?
(i) These are primitive multicellular animals and have cellular level of organization.
(ii) Digestion is intracellular.
(iii) They have a water transport or canal system.
(iv) They reproduce asexually by fragmentation and sexually by formation of gametes.

A. Porifera

B. Ctenophora

C. Coelenterata

D. Platyhelminthes

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4

The given figures (A & B) shows the germinal layer. The animals having structures shown in the figures are respectively called 
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A. diploblastic, triploblastic

B. triploblastic, diploblastic

C. diploblastic, diploblastic

D. triploblastic, triploblastic

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4

Match the features given in column I with their examples given in column II and choose the correct match from the option given below.
Column-IColumn-II
(Features)(Examples)
A. Pseudocoelomatesa. Hydra, Adamsia
B. Diploblasticb. Ctenoplana, Aurelia
C. Cellular level ofc. Ascaris, Wuchereria organization
D. Radial symmetryd. Sycon, Spongilla
E. Metamerisme. Pheretima, Neries

A. A - e, B - b, C - d, D - c, E - a

B. A - c, B - a, C - d, D - b, E - e

C. A - b, B - a, C - c, D - e, E - d

D. A - c, B - b, C - d, D - a, E - e

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4

Refer the following animals and identify those which have a fluid filled body cavity with a complete lining derived from mesoderm.
(i) Sycon (ii) Butterfly
(iii) Nereis (iv) Sea fan
(v) Scorpion (vi) Pila

A. (i) and (iii) only

B. (ii) and (iv) only

C. (ii), (iii), (v) and (vi) only

D. All of these

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4

Which of the following statement(s) is/are correct?
(i) Animals in which the cells are arranged in two embryonic layers, an external ectoderm and an internal endoderm, are called diploblastic animals.
(ii) Notochord is an ectodermally derived rod like structure formed on the ventral side during embryonic development in some animals.
(iii) In some animals, the body cavity is not lined by mesoderm, instead, the mesoderm is present as scattered pouches in between the ectoderm and endoderm and such a body cavity is called pseudocoelom.

A. Only (i)

B. Both (i) and (ii)

C. Both (i) and (iii)

D. All of these

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4

Which of the following statement(s) is/are correct for class amphibia?
(i) Body is divisible into head and trunk.
(ii) Respiration is through gills only.
(iii) The heart is two chambered i.e. one auricle and one ventricle.
(iv) Fertilization is internal.

A. Only (i)

B. Only (iv)

C. (i), (ii) and (iii)

D. All of these

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4

Refer the figures A, B, C and D given below. Which of the following options shows the correct name of the animals shown by the figures A, B, C and D ? 
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A. A – Locust, B – Scorpion, C – Prawn, D – Pila

B. A – Locust, B – Prawn, C – Scorpion, D – Pila

C. A – Locust, B – Scorpion, C – Prawn, D – Snail

D. A – Butterfly, B – Scorpion, C – Prawn, D – Pila

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4

The given figures A, B, C and D are the examples of first true land vertebrates. They are dominant in mesozoic era and belong to phylum ‘X’. Identify ‘X’ and the animals which have four chambered heart. 
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A. X – Reptile; B

B. X – Reptile; A

C. X – Amphibia, C

D. X – Pisces; D

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4

Which of the following is not the common fundamental feature for animal classification?

A. Germinal layers.

B. Pathway of water transport.

C. Pattern of organization of cells.

D. Serial repetition of the segments.

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4

Which of the following statement(s) is/are correct regarding class aves?
(i) The forelimbs are modified into wings and the hindlimbs generally have scales and are modified for walking, swimming or clasping the tree branches.
(ii) Heart is completely four-chambered.
(iii) They are warm- blooded (homoiothermous) animals i.e., they are able to maintain a constant body temperature.
(iv) They are oviparous and development is direct.

A. Both (i) and (iii)

B. Both (i) and (iv)

C. (i), (ii) and (iii)

D. All of these

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4

Which of the following statements is incorrect ?

A. Prawn has two pairs of antennae.

B. Nematocysts are characteristic feature of the phylum cnidaria.

C. Millipedes have two pairs of appendages in each segment of the body.

D. Animals that belong to phylum porifera are exclusively marine.

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4

Identify the figure with its correct name and phylum. 
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A. Sycon - Porifera

B. Aurelia - Coelenterata

C. Pleurobrachia - Ctenophora

D. Tapeworm - Platyhelminthes

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4

Which of the following is a correct match of a phylum with their three examples?

A. PlatyhelminthesPlanaria, Schistosoma, Enterobius

B. Mollusca Loligo, Sepia, Octopus

C. Porifera Spongilla, Euplectella, Pennatula

D. Cnidaria Bonellia, Physalia, Aurelia

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4

Identify the figure with its correct name and phylum. 
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A. Cucumaria – Echinodermata

B. Ascidia – Urochordata

C. Balanoglossus – Hemichordata

D. Hirudinaria – Annelida

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4

Which of the following traits is not shared by both sea anemones and jellyfish ?

A. A medusa as the dominant stage in the life cycle.

B. Possession of a gastro vascular cavity.

C. Sexual reproduction.

D. Nematocysts present on the tentacles.

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4

Match the phylum given in column - I with their example given in column - II and choose the correct option.
Column -IColumn- II
(Phylum)(Examples)
A. EchinodermataI. Ascidia, Doliolum
B. HemichordataII. Asterias, Ophiura
C. UrochordataIII. Branchiostoma
D. CephalochordataIV. Balanoglossus, Saccoglossus

A. A IV; B II; C I; D III

B. A II; B IV; C I; D III

C. A II; B IV; C III; D I

D. A II; B I; C IV; D III

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4

Which of the following is not a characteristic feature of kingdom animalia ?

A. Storage of carbohydrates as starch.

B. Multicellularity.

C. Obtaining nutrients by ingestion.

D. Having eukaryotic cells without walls.

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4

In ctenophora, the body bears _______ external rows of ciliated comb plates, which help in locomotion.

A. five

B. six

C. seven

D. eight

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4

The figure given below shows the germinal layers marked as A, B, C and D. Identify the label showing undifferentiated layer and its location?
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A. A, Between B & C

B. B, Between A & C

C. C, Between C & D

D. D, Between A & B

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4

A student was given a specimen to identify on the basis of the characteristics given below.
(i) They are metamerically segmented.
(ii) Presence of closed circulatory system.
(iii) They have circular and longitudinal muscles for locomotion. Identify the specimen.

A. Prawn

B. Pheretima

C. Wuchereria

D. Ctenoplana

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4

Flame cells present in platyhelminthes, are specialized in

A. respiration and absorption.

B. osmoregulation and circulation.

C. respiration and excretion.

D. osmoregulation and excretion.

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4

Which one of the following categories of animals is correctly described with no single exception in it?

A. In chondrichthyes notochord is persistent throughout life.

B. All mammals are viviparous and possess diaphragm for breathing.

C. All sponges are marine.

D. All reptiles possess scales, have a three chambered heart and are cold blooded (poikilothermal).

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4

Which of the following is a living fossil?

A. Balanoglossus

B. Echinus

C. Ancylostoma

D. Limulus