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4

Which of the following animals are bilaterally symmetrical?
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A. 1 & 2

B. 2 & 4

C. 3 & 4

D. 1 & 3

Correct Answer :

B. 2 & 4


Animal 2 and 4 are bilaterally symmetrical. Bilateral symmetry is a symmetrical arrangement, as of an organism or a body part, along a central axis, so that the body is divided into equivalent right and left halves by only one plane.

Related Questions

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4

Which of the following phylum is being described by the given statements?
(i) They are bilaterally symmetrical,triploblastic, segmented and coelomate animals.
(ii) The body consists of head, thorax, abdomen and have jointed appendages.
(iii) Circulatory system is of open type.
(iv) Excretion takes place through malphigian tubules.

A. Arthropoda

B. Annelida

C. Mollusca

D. Echinodermata

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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

In amphibians, heart is ________ chambered.

A. two

B. three

C. four

D. none of these

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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

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 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

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

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

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4

Match the phylum given in column - I with the special features present in them given in column - II and choose the correct option.
Column -IColumn- II
(Phylum)(Special features present)
A. PoriferaI. Mammary glands
B. MolluscaII. Cloaca
C. CtenophoraIII. Choanocytes
D. AmphibiaIV. Radula
E. MammaliaV. Comb plates

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

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

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

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

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4

Which of the following sets of animals give birth to young ones?

A. Platypus, Penguin, Bat, Hippopotamus.

B. Shrew, Bat, Cat, Kiwi.

C. Kangaroo, Hedgehog, Dolphin, Loris.

D. Lion, Bat, Whale, Ostrich.

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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 phylum arthropoda, excretion takes place through

A. nephridia

B. flame cells

C. malphigian tubules

D. gills

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4

Which one of the following groups of animals is correctly matched with its characteristic feature without even a single exception ?

A. Reptilia : possess 3 - chambered heart with one incompletely divided ventricle.

B. Chordata : Possess a mouth provided with an upper and lower jaw.

C. Chondrichthyes : Possess cartilaginous endoskeleton.

D. Mammalia : Give birth to young one.

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4

Which of the following is not a chordate character?

A. Presence of paired pharyngeal gill slits

B. Ventral heart

C. Solid and ventral nerve cord

D. Presence of post-anal tail

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4

The following statement are associated with the occurrence of notochord. Identify the incorrect statement.

A. It is present only in larval tail in ascidians.

B. It is replaced by a vertebral column in adult frog.

C. It is absent throughout the life in humans from the very beginning.

D. It is present throughout life in Amphioxus.

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4

Which of the following pairs of animals are similar to each other pertaining to the feature stated against them?

A. Pteropus and Ornithorhyncus - Viviparity

B. Garden lizard and crocodile - Three chambered heart

C. Ascaris and Ancylostoma - Metameric segmentation

D. Sea horse and flying fish - Cold blooded (poikilothermal)

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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 feature in birds indicates their reptilian ancestory ?

A. Eggs with a calcareous shell

B. Scales on their hind limbs

C. Four-chambered heart

D. Two special chambers-crop and gizzard in their digestive tract

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4

Column-I contains organisms and column-II contains their exeretory structures. Choose the correct match form the options given below.
Column- IColumn -II
(Organism)(Excretory structures)
A. CockroachI. Nephridia
B. Cat fishII. Malpighian tubules
C. EarthwormIII. Kidneys
D. BalanoglossusIV. Flame cells
E. FlatwormV. Proboscis gland

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

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

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

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

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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

Refer the figures A, B and C and choose the correct option which shows animals that regulate buoyancy with the help of air bladder. 
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A. A and B

B. A and C

C. B and C

D. All of the above.

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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

Identify the animals shown in the given figures A, B and C from options given below. 
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A. A - Octopus; B -Asterias, C- Ophiura

B. A - Asterias; B - Ophiura, C- Octopus

C. A - Echinus; B - Octopus C - Ophiura

D. A - Ophiura; B - Echinus, C- Octopus

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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 is a chordate feature and not shared by the non-chordates ?

A. Metamerism

B. Axial organization

C. Bilateral symmetry

D. Pharyngeal gill slits

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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

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 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

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 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