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1401.

Which of the following statements is incorrect with regard to bilateral symmetry?A. Body can be divided into two equal halves by a single plane only.B. The organisms that show bilateral symmetry have paired body organs that occur on the two sides of a central axis.C. It is found in all invertebrates and few vertebrates.D. Spider and crab show bilateral symmetery.

Answer» Correct Answer - C
Bilateral symmetry is found in few invertebrates and all vertebrates.
1402.

Which one of the following is matching set of a phylum and its three examplesA. Mollusca-Loligo, Teredo, OctopusB. Porifera- Spongilla, Euplectella, PennatulaC. Cnidaria- Bonelia, Physalia, AureliaD. Platyhelminthes - planaria , Schistosoma, Enterobius

Answer» Correct Answer - A
1403.

Among the following edible fishes which one is marine fish having rich source of omega-3 fatty acidsA. MackerelB. MystusC. MangurD. Mrigala

Answer» Correct Answer - A
Coprophangy is found in certain mammals (e.g. Rabbits). This is the process by which many rodents form a special kind of faeces from the contents of the caecum and these are reingested, so that the food passes through the digestive system second time. Rabbit is coprophagus in habit, eating its own faeces in order to get maximum amount of nutrient from its food. Faeces produced during night alone are eaten up which are soft and moist due to incompletely digested cellulose. Thus passing through the gut once more, the faeces are subjected once again to digestion and absorption.
1404.

Choose the correct statementA. All pisces have gills covered by an operculumB. All mammals are viviparousC. All cyclostomes do not possess jaws and paired finsD. All reptiles have a three - chambered heart

Answer» Correct Answer - C
All the stenal parts of the thoracic ribs except the last five, attached the sternum below by hyaline cartilage. Therefore, they are called as true ribs. Actually last two pairs of ribs (`11^(th)` and `12^(th)` pair) provided with the sternal parts and they are not connected with the sternum and hence. known as floating ribs. Floating ribs protect the kidney.
1405.

How do earthworm and leech differ with regard to coelom?

Answer» Coelom is spacious in earthworm and greatly reduced in leech by formation fo botryoidal tissue in it.
1406.

The biggest phylum in regard to the number of species is OR Which one of the following have the highest number of species in nature.A. ArtropodaB. PlatyhelminthesC. ChordataD. Protozoa

Answer» Correct Answer - A
Artropoda is largest phylum and includes about 80% of total animals. It includes about 9,00,000 species.
1407.

which one of the following have the highest number of species in nature ?A. AngiospermsB. FungiC. InsectsD. Birds

Answer» Correct Answer - C
1408.

which one of the following have the highest number of species in nature ?A. InsectsB. BirdsC. AngiospermsD. Fungi

Answer» Correct Answer - A
More than 70% of all the species recorded ar animals. Among animals, insects are the most species rich taxonomic group, making more than 70% of the total . It means out of every 10 animals on this planet, 7 are insects.
1409.

Which one of the following group s of animals is correctly matched with its characteristic feature without any exception `:`A. reptilia- possess 3-chambered heart with an incompletely divided ventricleB. chordata -possess a mouth with an upperand a lower jawC. chondrichthyes-possess cartilaginous endoskeletonD. mammalia -give birth to young ones

Answer» Correct Answer - C
1410.

Which one of the following have the highest number of species in nature?A. fungiB. insectsC. birdsD. angiosperms

Answer» Correct Answer - B
1411.

Which among them has moderately long and pointed snout and is very aggressive and dangerous for man?A. CrocodileB. AlligatorC. GavialisD. Salamandra

Answer» Correct Answer - A
1412.

In which of the following class of Annelida, one pair ovaries and several pair testes are foundA. ArchiannelidaB. HirudineaC. OligochaetaD. Polychaeta

Answer» Correct Answer - B
One pair of ovary and 11 pairs of testis are found in Leech or Hirudinea
1413.

How are annelida advanced over nematodaA. Closed circulationB. True coelomC. Metameric segmentationD. all of these

Answer» Correct Answer - D
Annelids are first animals in which closed circular system metamerism segmentation and true coelom is evolved ON the basis of these comments annelids are advanced over nematoda
1414.

Veliger larva occurs in phylumA. MolluscaB. EchinodermataC. ArthropodaD. Cnidaria

Answer» Correct Answer - A
(a) Veliger, trochophere or glochidium larva are characterstic of mollusca.
1415.

Besides Annelia and Arthopoda metamerism is found inA. CestodaB. AcanthocephalaC. ChordataD. Mollusca

Answer» Correct Answer - C
(c) Metamerism is a condition in which the body is composed of a linear series of similar body segments called metameres or somites. It is found in Annelida, Arthropoda and chordata.
1416.

Which type of ciculatory system is skown by Urochordates?A. OpenB. ClosedC. Heart is absentD. Alternates with every generation

Answer» Correct Answer - A
This is exception to the circulatory system in chordata phylum.
1417.

Respiration in cephalochordates occurs throughA. General body surfaceB. GillsC. TracheoleD. Lungs

Answer» Correct Answer - A
1418.

Read the given statements and select the correct option. Statement 1 : Urochordates and cephalochordates are often called invertebrate chordates. Statement 2: They are a connecting link between the invertebrates and the chordates.A. If both A and B are true and R is the correct explanation of AB. If both A and R are true but R is not the correct explanation of AC. If A is true but R is falseD. If both A and R are false

Answer» Correct Answer - C
1419.

Assertion.Termites and ants are social insects. Reason. Both establish fungus gardens in their nests to feed on fungus.A. If both A and B are true and R is the correct explanation of AB. If both A and R are true but R is not the correct explanation of AC. If A is true but R is falseD. If both A and R are false

Answer» Correct Answer - B
1420.

Assertion: Tapeworm, roundworm and pinworm are endoparasites of human intestine. Reason: Improperly cooked food is the source of intestinal infections.A. If both A and B are true and R is the correct explanation of AB. If both A and R are true but R is not the correct explanation of AC. If A is true but R is falseD. If both A and R are false

Answer» Correct Answer - C
1421.

Number of fertilized eggs in ootheca of Cockroach isA. 16 pairs in two rowsB. 16 in two rowsC. 10 in one rowsD. 8 in two rows

Answer» Correct Answer - B
1422.

The targa, sterna and pleura of cockroach body are joined byA. Muscular tissueB. Arthrodial membraneC. CartilageD. Cementing glue

Answer» Correct Answer - B
Tegra, sterna and pleura are joined by a flexible artrodial membrane.
1423.

Onchosphere occurs isA. AscarisB. FasciolaC. TaeniaD. Planaria

Answer» Correct Answer - C
(a) Fertilized egg of Taenia develops into an embryo that gets covered by a shell The shelled embryos are called onchospheres secondary host acquires infection by ingesting the onchosphere released form Taenia
1424.

The head of cockroach lacksA. CardoB. GenaC. TrochanterD. Frons

Answer» Correct Answer - C
Kiwi is the smallest living flightless bird. It is found in New Zealand
1425.

Schistosoma is a parasite found inA. BloodB. LiverC. LungsD. Intestine

Answer» Correct Answer - A
(a) Schistosoma lives in hepatic portal system and mesenteric blood vessels of human beings so commonly called blood Fluke
1426.

The pecuilar pungent smell of cockroach is produced by the secreations ofA. PhermonesB. Flame cellsC. Addomonal glandsD. Cervical glands

Answer» Correct Answer - A
In birds only one gland is present in the skin at the base of short tail or uropygium it is known as oil or preen gland
1427.

The embryo of Taenia present in ripe proglottids isA. TetracanthB. HexacanthC. MiracidiumD. Bladderworm

Answer» Correct Answer - B
(b) Hexacanth embryo of Taenia is present in ripe proglottids or gravid proglottids which is covered by shell structure, called onchosphere
1428.

Match of column A with column B and choose the correct option. `{:("Column A","Column B"),(A."Porifere",i."Canal system"),(B."Aschelminthes",ii."Water-vascular system"),(C."Annelida",iii."Muscular pharynx"),(D."Arthropoda",iv."Jointed appendages"),(E."Echinodermata",v."Metameres"):}`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
1429.

The movement of water in syconoid type of canal system isA. Dermal ostia ` to ` Canal ` to ` Spongocoel ` to ` OsculumB. Dermal ostia ` to` Incurrent cana ` overset("Prosoyle")to` Radial canal ` overset ("Apopyle")to ` Spongocoel `to` OsculumC. Dermal ostis `to` Incurrent canal ` overset ("Prosopyle")to` Flagelated chamber `overset ("Apopyle")to` Excurrent canal `to` Spongocoel ` to` OsculumD. Pinacocytes `to ` Choanocytes `to` Enteron ` to ` Osculum

Answer» Correct Answer - B
1430.

Which one of the following cell I totipotent and responsible for regenerative capacity in sponges ?A. PinacocytesB. ThesocytesC. ArchaeocytesD. Scleroblast

Answer» Correct Answer - C
1431.

Two-chambered heart is a feature ofA. amphibiansB. fishesC. reptilesD. birds

Answer» Correct Answer - b
1432.

Which one of the following statements is incorrect ?A. In cockroaches and prawns, excretion of waste material occurs through Malpighian tubules.B. In ctenophores, locomotion is mediated by comb plates.C. In Fasciola flame cells take part in excretionD. Earthworm are hermaphrodites and yet cross fertilisation take place among them.

Answer» Correct Answer - A
In cockroaches, excretion takes place by Malpighian tubules while in prawns, it takes place by green glands.
1433.

Which one of the following statements is incorrect ?A. Mesoglea is present in between ectoderm and endoderm in Obelia.B. Asterias exhibits radial symmetry.C. Fasciola is a pseudocoelomate animal.D. Taenia is a triploblastic animal.

Answer» Correct Answer - C
Fasciola (a platyhelminth) is an acoelomate animal.
1434.

Acorn worms are included in which of the following phylum?A. EchinodermataB. HemichordataC. Mollusca and EchinodermataD. Annelida

Answer» Correct Answer - B
Hemichordata
1435.

Which of the following statements is falseA. Male roundworm is smaller then femaleB. Earthworms are hermaphroditeC. Echinoderms are protostomous coelomatesD. Human teeth are annatomically comparable to scales of shark

Answer» Correct Answer - C
1436.

The middle layer in body wall of porifera is or The non-cellular layer present between pinacoderm and choanoderm in body wall of poriferans is known asA. MesodermB. MesenchymeC. MesogloeaD. Mesentery

Answer» Correct Answer - B
(b) In porifera, bodywall is with outer pinacoderm (ectoderm) inner choanoderm (endoderm) and gelatinous noncellular mesenchyme in between.
1437.

The middle layer in body wall of porifera is or The non-cellular layer present between pinacoderm and choanoderm in body wall of poriferans is known asA. MsodermB. MesenchymeC. MesogleaD. Mesentery

Answer» Correct Answer - B
1438.

Which of the following phylum are included in enterozoaA. Annelida , Mollusca, PoriferaB. Echinodermata, Hemichordata, poriferaC. Mollusca, Arthropoda, HemichordataD. Porifera, Mollusca, Arthropoda

Answer» Correct Answer - C
1439.

The number of gils present in Osteichtyes isA. 2 pairsB. 6-15pairsC. 5 pairsD. 4 pairs

Answer» Correct Answer - D
Trichinella spiralls shows vivipartiy
1440.

Cyclops is intermediate host ofA. Planaria//DugesiaB. EchinococcusC. DracunculusD. Ancylostoma

Answer» Correct Answer - C
Dracunculus is digenetic intermediate host is cyclops or water fleas.
1441.

Which one of the following statements about centain given animals is correctA. Flat worms (Platyhelminthes) are coelomatesB. Round worms (Aschelminthes) are pseudocoelomatesC. Molluses are acoelomatesD. Insects are Pseudocoelomates

Answer» Correct Answer - B
1442.

Coenocytic condition is found inA. UlothrixB. ChlamydomonasC. SpirogyraD. Wuchereria

Answer» Correct Answer - D
1443.

Honey is the commercial product of which of the following animal?A. BombyxB. LacciferC. ApisD. Aedes

Answer» Correct Answer - C
Apis
1444.

The body segments in earthworm are calledA. comb platesB. spiculesC. MetameresD. Ganglia

Answer» Correct Answer - C
Metameres
1445.

Which function is served by the tracheal system in____ insects?A. SensationB. RespirationC. Both 1 and 2D. Digestion

Answer» Correct Answer - B
Respiration
1446.

The chitinous exoskeleton is possessed byA. AnnelidsB. ArthropodsC. MolluscsD. Enchinoderms

Answer» Correct Answer - B
Arthropods
1447.

The greatest ability of regeneration amongst the animals is found inA. AscarisB. PheretimaC. HirudiniaD. Planaria(Dugesia)

Answer» Correct Answer - D
(d) Planaria//Dugesia is a free living leaf like flatworm found in fresh water it has high power of regeneration so it is used in regeneration experiments
1448.

Which of the following phylum is devoid of tissue?A. PoriferaB. CoelentrataC. AnnelidaD. Arthopoda

Answer» Correct Answer - A
Porifera is devoid of tissue.
1449.

Larvage of beetles are known asA. CaterpillarsB. GrubsC. MaggotsD. Naids

Answer» Correct Answer - B
Birds have bipedal locomotion because fore limbs are modified into wings.
1450.

Which of the following structures is present characteristically only in mammalian brainA. Corpus fibosumB. Corpus striatumC. Corpus luteumD. Corpus callosum

Answer» Correct Answer - D
Most unique character of mammalian brain is presence of corpus callosum it connect the two cerebral hemispheres internally