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4

Which of the following characteristics is correct for reptilia?

A. Body covered with dry and cornified skin, scales over the body are epidermal, they do not have external ears.

B. Body is covered with moist skin and is devoid of scales, the ear is represented by a tympanum, alimentary canal, urinary and reproductive tracts open into a common cloaca.

C. Fresh water animals with bony endoskeleton and airbladder regulate buoyancy.

D. Marine animals with cartilaginous endoskeleton and body is covered with placoid scales.

Correct Answer :

A. Body covered with dry and cornified skin, scales over the body are epidermal, they do not have external ears.


In option (a) all the characteristics belong to class reptilia. In options (b), (c) and (d) the characteristics belong to the classes amphibia, osteichthyes and chondrichthyes respectively.

Related Questions

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4

Which of the follwoing statement(s) is/are correct?
(i) Organ systems in different group of animals show various patterns of complexities.
(ii) The digestive system in platyhelminthes has only a single opening to the outside of the body that serve as both mouth and anus, and is hence called complete.
(iii) In open type of circulatory system, the blood is pumped out of the heart and the cells and tissues are directly bathed in it.
(iv) In closed type, the blood is circulated through a series of vessels of varying diameters (arteries, veins and capillaries).

A. Only (i)

B. Both (ii) and (iii)

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

D. All of these

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4

Match the types of animals given in column I with their examples given in column II and choose the correct option.
Column -IColumn -II
(Types of animals)(Examples)
A. Limbless reptilesI. Elephant
B. Jawless vertebratesII. Lamprey
C. Flightless birdIII. Ichthyophis
D. LargestIV. Ostrich terrestrial animal
E. Limbless amphibiaV. Cobra

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

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

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

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

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4

Which of the following class is being correctly described by given statements (i - iv)?
(i) All living members of this class are ectoparasites on some fishes.
(ii) They have a sucking and circular mouth without jaws.
(iii) Circulation is of closed type.
(iv) They are marine but migrate for spawning to fresh water. After spawing, within a few days they die.

A. Cyclostomata

B. Chondrichthyes

C. Osteichthyes

D. Amphibia

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4

Which of the following is a connecting link between invertebrates and non-invertebrates?

A. Sphenodon

B. Balanoglossus

C. Tadpole larva

D. Crocodile

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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

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

Refer the following statement and answer the question. 'Name of X is derived from stinging capsules. It exhibits metagenesis containing two body forms in which sessile and cylindrical form is called Y and umbrella shaped and free swimming is called Z. Identify X, Y, and Z.

A. X - Coelenterate, Y - Polyp, Z - Medusa

B. X - Cnidarian, Y - Medusa, Z - Polyp

C. X - Ctenophora, Y - Radula, Z - Hypostome

D. X - Porifera, Y - Osculum, Z - Radula

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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

Which of the following class is being described by the given statements (i - iv)?
(i) They are found in a variety of habitats- polar ice-caps, deserts, mountains, forests, grasslands and dark caves.
(ii) Most unique mammalian characteristic is the presence of mammary glands by which the young ones are nourished.
(iii) Heart is four-chambered.
(iv) Sexes are separate and fertilization is internal.

A. Reptilia

B. Aves

C. Mammalia

D. Amphibia

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4

Which of the following group of animals belongs to the same phylum?

A. Earthworm, pinworm, tapeworm

B. Prawn, scorpion, Locusta

C. Sponge, Sea anemone, starfish

D. Malarial parasite, Amoeba, mosquito

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4

Which of the following characteristic distinguish arthropoda from annelids and molluscs ?

A. An external skeleton made of chitin (a polysaccharide) and protein rather than a shell made chiefly of mineral salts.

B. Subdivision of the legs into movable segments.

C. Distinct group of muscles, derived from many body segments, that move the separate parts of the exoskeleton.

D. All of the above

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4

Match the organisms given in column-I with their common name given in column-II and choose the correct option.
Column -IColumn -II
(Organisms)(Comman name)
A. PennatulaI. Sea-lily
B. AntedonII. Sea- pen
C. EchinusIII. Sea-urchin
D. CucumariaIV. Sea - cucumber

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

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

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

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

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4

Which of the following is a living fossil?

A. Balanoglossus

B. Echinus

C. Ancylostoma

D. Limulus

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4

Which of the following is an incorrect statement regarding flatworms ?

A. They are acoelomates.

B. They are bilaterally symmetrical.

C. They lack a digestive system.

D. They have a circulatory system.

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4

Identify the figures A, B and C and choose the correct option. 
akimg7

A. A - Male Ascaris, B - Hirudinaria (leech), C- Nereis

B. A - Female Ascaris, B - Nereis, C-Hirudinaria (leech)

C. A - Female Ascaris B- Hirudinaria (leech), C - Nereis

D. A - Male Ascaris, B - Nereis, C- Hirudinaria (leech)

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4

Read the following statements and answer the question.
(i) They are exclusively marine, radially symmetrical, diploblastic organisms with tissue level of organisation.
(ii) Body bears eight external rows of ciliated comb plates, which help in locomotion.
(iii) Digestion is both extracellular and intracellular.
(iv) Reproduction takes place only by sexual means.
Which of the following phylum is being described by above statements?

A. Platyhelminthes

B. Arthropoda

C. Mollusca

D. Ctenophora

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4

Which of the following features distinguish mammals from other vertebrates ?

A. Hairy skin and oviparity

B. Hairy skin and mammary glands

C. Mammary glands and teeth

D. Pinna and teeth

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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

Aquatic annelids (like Nereis) possess lateral appendages called ______________, which help in swimming.

A. visceral hump

B. parapodia

C. radula

D. spicules

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4

Refer the given figures A, B, C and D and identify the option which shows their correct name. 
akimg3

A. A - Pleurobrachia, B - Cnidoblast, C - Aurelia, D - Adamsia

B. A - Aurelia, B - Adamsia, C - Cnidoblast, D - Pleurobrachia

C. A - Cnidoblast, B - Pleurobrachia, C - Adamsia, D - Aurelia

D. A - Adamsia, B - Aurelia, C - Pleurobrachia, D - Cnidoblast

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4

Which of the following statement(s) is/are correct regarding phylum aschelminthes?
(i) The body is circular in cross-section hence the name roundworms.
(ii) Alimentary canal is complete with a well-developed muscular pharynx.
(iii) Sexes are separate (dioecious), i.e., males and females are distinct.
(iv) Nephridia help in osmoregulation and excretion.

A. (i) and (ii)

B. (iii) and (iv)

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

D. All of these

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4

Match the terms/feature given in column I with their examples given in column II and select the correct match from the option given below.
Column-IColumn-II
(Term/Feature)(Examples)
A. Gregarious pesti. Hirudinaria
B. Vectorii. Planaria
C. Oviparous withiii. Sepia indirect development
D. Metameresiv. Aedes
E. High regenerationv. Locust capacity

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

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

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

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

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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

Meandrina (brain coral) belongs to phylum

A. porifera

B. coelenterata

C. ctenophora

D. platyhelminthes

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4

Tracheae of cockroach and mammal are similar in having

A. paired nature.

B. non-collapsible walls.

C. ciliated inner lining.

D. origin from head.

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4

Which of the following group of animals reproduces only by sexual means?

A. Ctenophora

B. Cnidaria

C. Porifera

D. Protozoa

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4

The figure given below is the characteristic structure of the phylum in which animals are aquatic, free swimming or sessile, mostly marine, radially symmetrical. Identify the phylum and correct function of the structure. 
akimg15

A. Ctenophora; Emission of light.

B. Porifera; Feeding, respiration and excretion.

C. Cnidarian; Anchorage, Defense and food capturing

D. Mollusca; Locomotion, transport of food and respiration.

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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

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

In phylum echinodermata, the adult echinoderms are ______A__________ but larvae are _______B______ .

A. A radially symmetrical; B bilaterally symmetrical

B. A bilaterally symmetrical; B radially symmetrical

C. A bilaterally symmetrical; B asymmetrical

D. A metamerically segmented; B asymmetrical