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451.

Match the column-I with Column-II Choose the correct option : A. A-ii,B-iii,C-v,D-iv,E-iB. A-ii,B-v,C-iii,D-iv,E-iC. A-i,B-iii,C-v,D-iv,E-iiD. A-i,B-v,C-iii,D-iv,E-ii

Answer» Correct Answer - C
452.

Ascaris performsA. Aerobic repirationB. Anaerobic repirationC. Both (a) and (b)D. None of these

Answer» Correct Answer - B
Ascaris being an endoparasite repires anaerobically because the oxygen content in the hosts intestine is usually poor.
453.

In which of the following reptiles, a four- chambered heart is present ?A. LizardsB. SnakeC. ScorpionD. Crocodile

Answer» Correct Answer - D
454.

Sea lilies are the members of classA. OphiuroideaB. AsteroideaC. CrinoideaD. Echinodea

Answer» Correct Answer - C
In male platypus a grooved erectile poison spine is present on the tarsus which is served by a poison spine is present on the tarsus which is served by a poison gland in the thigh. The poison is used to immobilize a female during coition
455.

The animal with bilateral symmetry in young stage and radial pentamerous symmetry in the adult stage belong to the phylumA. AnnelidaB. MolluscaC. CnidariaD. Echinodermata

Answer» Correct Answer - D
Echinoderms are triploblastic animals with organ system level of organisation . Lerval forms possess bilateral symmetry while adults have radial symmetry.
456.

Which of the following symmetry is found in adult sea-anemoneA. BiradialB. SphericalC. BilateralD. None of these

Answer» Correct Answer - A
c) When the body can be divided into two similar halves by one or two vertical planes only, the radial symmetry is called biradial vertical planes only, the radial symmetry is called biradial symmetry it is present in the sea anemone.
457.

Which animals is non- chordate ?A. HerdmaniaB. BalanoglossusC. BranchiostomaD. Botryllus

Answer» Correct Answer - D
458.

A chordate character isA. gillsB. spiraclesC. post-anal tailD. Chitinous exoskeleton

Answer» Correct Answer - C
Presence of post-anal tail is one of the characters of chordate.
459.

(a) Name any two useful insects and the products which are of use to man. (b) List three species of mosquitoes and the disease they spread.

Answer» Useful Insects Product
(a) Apis indica ( honey bee) - honey and max
Laccifer lacca (lac insect) - lac
(b) Female Anopheles sp. - Malaria
Culex sp. -Filariasis ( elephantiasis )
Aedes sp. - dengue, yellow fever
460.

Fish which can be used in biological control of mosquitoes/Larvicidal fish isA. eelB. carpC. cat fishD. Gambusia

Answer» Correct Answer - D
Gambusia (mosquito fish) eats the larvae of mosquito, so it is used in biological control of mosquito.
461.

Where are the Kangaroos found?A. AsiaB. AustraliaC. AfricaD. South america

Answer» Correct Answer - B
Kangaroos are found in Australia.
462.

In mosquitoes, the sex differentiation can be done on the basis ofA. Size of wingsB. AntennaeC. Antennae and maxillary palpsD. Ocelli

Answer» Correct Answer - C
In Mosquitoes, the sex differentiation can be done on the basis of antennae and maxillary palps.
463.

Mesoglia is seen in betweenA. Ectoderm and endodermB. Ectoderm and mesodermC. Mesoderm and endodermD. Just below mesoderm

Answer» Correct Answer - A
464.

Interstitial fluid resemblesA. Sea waterB. Fresh waterC. Ground waterD. None of these

Answer» Correct Answer - A
465.

The path of water in a sponge isA. Dermal ostia `to` Gastral ostia ` to ` OsculumB. Dermal ostia ` to ` Gastral ostia `to ` spongocoel ` to` OsculumC. Osculum ` to ` Spongocoel ` to ` Choanocytes ` to ` OstiaD. Pinacocytes `to ` Choanocytes `to` Enteron ` to ` Osculum

Answer» Correct Answer - A
466.

Most of the sponges are marine and remain attached to rock ( sessile ). The frest water sponge isA. SyconB. SpongillaC. ClionaD. Euplectella

Answer» Correct Answer - B
467.

Gelatin, a very important raw material for preparation of photographic emulsion, in a bi-product ofA. chickenB. forestC. cattleD. fish

Answer» Correct Answer - C
468.

In sponges, there isA. Radial symmetryB. Present a true coelomC. A single exit and a number of mouthsD. A single mouth and a number of exist .

Answer» Correct Answer - C
469.

Cephalization is absent inA. MolluscsB. ArthopodsC. Both (1) and (2)D. Echinoderms

Answer» Correct Answer - D
470.

Placenta is a characteristic feature ofA. MammalsB. AmphibiansC. ReptilesD. Fish.

Answer» Correct Answer - A
471.

Why do the speedy fishes and marine mammals have similar streamlined (fusiform) bodies even though they have different origin and are unrelated?

Answer» Both are adpated to aquatic life and the laws of hydrodynamics are universal . This is an example of convergent evolution.
472.

In which of the following vertebratesk, notochord is persistent througout the life?A. CyclostomataB. ChondrichthyesC. OsteichthyesD. Agnatha

Answer» Correct Answer - B
In chondrichthyes notochord is persistent throughout the life.
473.

Enterocoelom is found inA. ProtostomiaB. DeuterostomiaC. both A and BD. Both A and B

Answer» Correct Answer - B
Enterocoelom is found in deuterostomia.
474.

The animals posseing the following type of germ layers (A and B) are called __________and_____respectively. A. diploblastic, triploblasticB. triploblastic,diploblasticC. diploblastic, diploblasticD. triploblastic, triploblastic

Answer» Correct Answer - A
475.

Name the 3 primary germ laywes formed in gastrula.

Answer» Ectoderm, mesodermand endoderm.
476.

Which of the following have macrolecithal eggs ?A. Aves, ReptiliaB. Aves, Reptilia, AmphibiaC. Aves, Reptilia, ChiropteraD. Aves, Eutheria

Answer» Correct Answer - B
477.

When a fresh water protozoan is placed in marine waterA. The contractile vacuoles becomes bigger in size.B. The number of contractile vacuoles increasesC. The contractile vacuoles disapperD. The contractile vacuoles remain unchanged.

Answer» Correct Answer - C
478.

Earthworm areA. Uricotelic under conditions of water scarcityB. Ammonotelic when plenty of water is availableC. Ureotelic when plenty of water is availableD. Unicotelic when plenty of water is available

Answer» Correct Answer - B
479.

What is the function of lateral -line sense organs ?

Answer» Detrection of currents and waves in water.
480.

The two organisms which breathe only through their moist skin areA. Fish and frogB. Frod and earthwormC. Leech and earthwormD. Fish and earthworm

Answer» Correct Answer - C
481.

Lateral line sense organs occur inA. Cartilaginous fishesB. Bony fishesC. Amphibian larvaeD. Reptiles

Answer» Correct Answer - B
482.

Peculiarity of fish heart is that it hasA. All venous bloodB. All arterial bloodC. Partly venous and partly arterial bloodD. No blood at all

Answer» Correct Answer - A
483.

Which of the following is a flagellated protozoanA. AmoebaB. EntamoebaC. PalsmodiumD. Trypanosoma

Answer» Correct Answer - D
484.

Eggs of birds areA. MicrolecithalB. CentrolecithalC. MegalectithalD. Alecithal

Answer» Correct Answer - C
485.

Which character is found only in mammales ?A. NeckB. DiaphragmC. Optic lobes of brainD. Tail

Answer» Correct Answer - B
486.

Heterocercal tail is found inA. Cartilaginous fishesB. Bony fishesC. WhaleD. Amphibians

Answer» Correct Answer - A
487.

Classification of Phylum Porifera is based onA. branching spiculesB. spiculesC. reproductionD. symmetry

Answer» Correct Answer - B
Classification of sponges is primarily based on skeleton which are spicules. These belongs to phylum-Porifera.
488.

Mollusca includesA. Dorso-ventrally flattened animalsB. Pseudocoelomate animalsC. soft-bodies animalsD. Spiny-bodies animals

Answer» Correct Answer - C
soft-bodies animals
489.

Find the incorrect match:A. Dentalium-tusk shellB. Loligo-cuttlefishC. Aplysia-sea-hareD. Pila-apple snail

Answer» Correct Answer - B
Loligo-cuttlefish
490.

Mantle is a/anA. soft and spongy layer of skinB. rasping organC. calcareous shellD. another name of visceral hump

Answer» Correct Answer - A
soft and spongy layer of skin
491.

The water vascular system in phylum echinodermata helps inA. Locomotion, capture and transport of foodB. ExcretionC. RespirationD. All of these

Answer» Correct Answer - D
All of these
492.

The larvae of echinoderms areA. Bilaterally symmetrical and free-swimmingB. Radially symmetrical and free-swimmingC. Bilaterally symmetrical and sessileD. Radially symmetrical and sessile

Answer» Correct Answer - A
Bilaterally symmetrical and free-swimming
493.

All of the following are the functions of water-vascular system, exceptA. LocomotionB. RespirationC. ReproductionD. Capture of food

Answer» Correct Answer - C
Reproduction
494.

According to habitats, all echinoderms are____animals.A. Fresh waterB. MarineC. TerrestrialD. Fresh water and marine

Answer» Correct Answer - B
Marine
495.

On the basis of coelom, the hemichordates areA. PseudocoelomatesB. coelomatesC. AcoelomatesD. both (1) and (2)

Answer» Correct Answer - B
coelomates
496.

Larval stages are found inA. VertebratesB. InvertebratesC. Both A and BD. None of the above

Answer» Correct Answer - C
Larval stage is found in both vertebrates and invertebrates.
497.

Which group of animals belong to the same phylum ?A. Earthworm , Pinworm, TapewormB. Prawn, Scorpion, LucustaC. Sponge, Sea anemone, StarfishD. Malraial parasite, Amoeba, Mosquito

Answer» Correct Answer - B
498.

Read the following statements: a. This phylum consists of a small group of worm like marine animals b. They are bilaterally symmetrical, triploblastic and coelomate animals c. The body is cylindrical d. Respiration takes place through gills. We are talking about the phylumA. Aschelminthes (Ascaris)B. Mollusca (snail)C. Echinodermata (starfish)D. Hemichordata(Saccoglussus)

Answer» Correct Answer - D
* this phylum consists of a small group of worm like marine animals.
* They are bilaterally symmetrical, triploblastic and coelomate animals.
* The body si cylinderical.
* Respiration takes place through gills, we are talking about the phylum Hemichordata (saccoglossus).
499.

Which is not correct for sponges?A. Internal fertilizationB. external fertilizationC. Gemmule formationD. Gametes are formed from epidermal cells

Answer» Correct Answer - B
500.

In the given table which animal is correctly matched with its taxon group and character .

Answer» Correct Answer - C