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1601.

Which one of the following is oviparous ?A. PlatypusB. Flying fox (Bat)C. ElephantD. Whale

Answer» Correct Answer - A
Platypus, bat, elephant and whale, all belong to Class Mammalia of sub-phylum Vertebrate. Out of the four, only platypus is oviparous (egg laying), rest are viviparous (give birth to young ones).
1602.

Which one of the following is not a poisonous snake ?A. CobraB. ViperC. PythonD. Krait

Answer» Correct Answer - c
Python is a large and non-poisonous snake. It kills its prey by coiling around and crushing before swallowing it.
1603.

Fill in the blanks `:` (i) Variability of animals `"….............."` has greatly helped in their classification. (ii) Heterotrophic mode of nutrition is an important factor in causing great diversity in the `"…................"` of animal structure. (iii) Fertilization results in the formation of `"..................."` zygote. (iv) The digestive cavity of Hydra has only `"..............."` opening for both ingestion and egestion. (v) Radial symmetry means that the body of the animal may be divided into `"..................."` equal halves.

Answer» (i) Morphyology (ii) Gut or digestive system. (iii) Diploid (iv) Single ( mouth ) (v) Two.
1604.

Name the 2 cellular layers of a sponge body.

Answer» Dermal and choanocytic.
1605.

What is true about Nereis, scorpion, cockroach and silver fish ?A. they all possess dorsal heartB. none of them is aquaticC. they all belong to the same phylumD. they all have jointed paired appendages

Answer» Correct Answer - A
1606.

What is true about nereis, scorpion, cockroac and silver fish?A. They all have jointed paired appendagesB. They all possess dorsal heartC. None of them is aquaticD. They all belong to the same phylum

Answer» Correct Answer - C
Nereis living in burrows in sand or mud often with clams. Scorpion are abundant in deserts.
Cockroach are found in warmth, dampness and plenty of organic food to devour. Lepisma (silver fish) residing in damp cool places and feeding on starch of starchy matter.
1607.

What is true about Nereis, scorpion, cockroah and silver fish?A. They all possess dorsal heart.B. None of them is aquaticC. They all belong to the same phylum.D. They all have jointed paired appendages.

Answer» Correct Answer - A
Nereis belongs to Phylum Annelida and scorpion, cockroach and silver fish belong to Phylum Arthopoda. They all posses dorsal heart.
1608.

Read the following statements and select the incorrect ones. (i) Circulatory system in arthorpods is of closed type. (ii) Parapodia in annelids help in swimming. (iii) Phylum Mollusca is the second largest animal phylum. (iv) Aschelminthes are dioecious.A. (i) and (iii) onlyB. (i) onlyC. (iii) onlyD. (iii) and (iv) only

Answer» Correct Answer - B
Curculatory system in arthropods is of open type, i.e., blood flows in irregular spaces called lacunae. It does not flow in definite blood vessels.
1609.

Universal character of inset isA. Two pair of wingsB. Compound eyesC. Three pairs of legsD. Both b) and c)

Answer» Correct Answer - D
1610.

Scorpion belongs to a class to which one of the following also belongs.A. TicksB. CrabC. BarnaclesD. Cockroach

Answer» Correct Answer - A
1611.

Identify the animal (A) and name the phylum to which its belongs (B). A. A-Balanoglossus, B-HemichordataB. A-Balanoglossus,B-CephalochordataC. A-Nereis, B-UrochordataD. A-Nereis,B-Annelida

Answer» Correct Answer - A
The given animal belongs to Phylum Hemichordata. The name of the animal is Balanoglossus or acorn worm.
1612.

Pearl is produced in the bivalve belonging to the genusA. PectenB. MytilusC. OstraeaD. Pinctada

Answer» Correct Answer - D
1613.

Which phylum belongs to DuterostomiaA. EchinodermataB. MolluscaC. ArthropodaD. Annelida

Answer» Correct Answer - A
1614.

Animals of which group are not fresh waterA. CrustaceaB. InsectsC. EchinodermataD. Sponge

Answer» Correct Answer - C
1615.

Which of the phylum has none of fresh water organism ?A. ChordataB. EchinodermataC. MolluscaD. Protozoa

Answer» Correct Answer - B
1616.

Which is correct for indian snakesA. Only sea snakes are non-poisonousB. Only sea snakes are poisonousC. All water snakes are poisonousD. All sea snakes are poisonous

Answer» Correct Answer - D
1617.

Which of the following groups of animals are uricotelic ?A. Reptiles, birds, land snails, insectsB. Reptiles, birds, land snailsC. Aquatic amphibians, birds,land snails, insectsD. Amphibians, reptiles, birds, insects

Answer» Correct Answer - A
Uricotelic animals are those animals that excrete their waste matter in the form of uric acid. Reptiles, birds, land snails and insects are uricotelic animals.
1618.

Which one of the following statements about certain given animals is corret?A. Roundworms are pseudocoelomates.B. Mollucus are acoelomates.C. Annelids are pseudocoelomates.D. Flatworms are coelomates.

Answer» Correct Answer - A
Roundworms are pseudocoelomates. Molluscs and annelids are coelomates while flatworms are acoelomates.
1619.

Phylum Mollusca can be distinguished from other invertebrates by the presence ofA. Bilateral symmetry and exoskeletonB. A mantle and gillsC. Shell and non-segmented bodyD. A mantle and non-segmented body

Answer» Correct Answer - D
1620.

Phylum Mollusca can be distinguished from other invertebrates by the presence ofA. bilateral symmetry and exoskeletomB. a mantle and gillsC. shell and non-segmented bodyD. a mantle and non-segmented body

Answer» Correct Answer - D
Members of Phylum Mollusca have non-segmented body with a distinct head, muscular foot and visceral hump. A soft and spngy layer of skin forms a mantle over the visceral hump. The other characteristics mentioned in other options are shared with other phyla e.g. bilateral symmetry is exhibited by phylums Platyhelminthes, Aschelminthes, Annelida and Arthropoda.
1621.

Which one of the following class of phylum mollusca is incorrectly matched with its general characteristics?A. Gastropoda- Larvae are bilaterally symmetrical, but in adult, the twisting of viscera makes them lose this symmetry. Some, like land snail and slug (a shell-less form), live on land.B. Bivalvia- they are sedentary filter feeders.C. Cephalopoda- They are at the apex of invertebrate evolution in terms of learned behavious they exhibit. The eyes are image forming, same what similar to ours.D. Pelecypoda- They have sensory tentacles and their foot is reduced into a tongue-shaped structure which helps them to burrow into sea floor.

Answer» Correct Answer - D
Pelecypoda- They have sensory tentacles and their foot is reduced into a tongue-shaped structure which helps them to burrow into sea floor.
1622.

Which among the following is not a class of phylum molluscaA. GastropodaB. TrematodaC. DecapodaD. Both b and c

Answer» Correct Answer - D
1623.

Venom of which of the following snakes is proteolyticA. ViperB. KraitC. CobraD. Ajgar

Answer» Correct Answer - A
1624.

The vestiges of girdles are found inA. CobraB. KraitC. Rattle snakeD. Python

Answer» Correct Answer - D
1625.

The vertebrae in the suborder Ophidia (snakes) areA. AcoelousB. ProcoelousC. AmphicoelousD. Herertocoelous

Answer» Correct Answer - B
1626.

Sea snakes areA. OviparousB. ViviparousC. OvoviviparousD. Parthenogenetic

Answer» Correct Answer - B
1627.

The colour of the body in earthworm is brown due to the presence ofA. PorphyrinB. HaemoglobinC. BloodD. Haemocyanin

Answer» Correct Answer - A
Earthworm is brown or clay coloured This is because of the pigment porphyrin
1628.

The famous indian Zoologist who wrote a memoir upon Pheretima posthuma isA. J.C. BoseB. M.L. BhatiaC. K.N. BahlD. Beni prasad

Answer» Correct Answer - C
Prof. Karm Narayan Bahl of Lucknow University published a memoir on indian earth worm pheretima in 1926 He was awarded Joy Govind law memorial gold medal in 1942 for notable research in Asiatic Zoology.
1629.

Which type of migration is shown by the cyclostomes?

Answer» Anadromous i.e. which spend most of their lives in the sea and migrate to river for breeding
1630.

Anccestors of cyclostomes areA. myxinoidesB. arthropodsC. ostracodemsD. urochordates

Answer» Correct Answer - C
Anapsida has a solid roof due to the absence of any temporal vacuties on skull.
1631.

Which of the following is a poisonous snake?A. NajaB. KraitC. ViperD. All of the above

Answer» Correct Answer - D
Naja, krait and viper are poisonous snakes.
1632.

Cyclostomes are a____ but migrate for spawing to b____A. a-marine, b-fresh waterB. a-Marine, b-Brackish waterC. a-Fresh water, b-MarineD. a-Brackish water, b-fresh water

Answer» Correct Answer - A
Cyclostomes are marine but migrate of spawing to fresh water.
1633.

Corpora allata are removed from a nymph. It willA. Remain nymph for lifeB. Become adultC. Change to next nymph immediately but will remain in that stateD. Die after some time

Answer» Correct Answer - B
1634.

Find the wrongly matched pair.A. Cnidoblast-Prey captureB. Flame cells-DefenseC. Parapodia-SwimmingD. Radula-Rasping organ

Answer» Correct Answer - B
Flame cells-Excretion.
1635.

Which is the incorrect stament?A. In ctenophores, locomotion is mediated by comb platesB. In fasciola, exretion is done by renette cellsC. Earthworms are monoecious but cross fertilization take place among themD. In cockroaches and mosquitoes exretion of waste material occurs through malpighian tubules

Answer» Correct Answer - B
In ctenophores, locomotion is mediated by comb plates.
* In fasciola, excretion is done by flame cells.
* Earthworms are monoecieous but cross fertilization take place among them.
* cockroaches and mosquitoes, exccretion of waste material occurs through malpighian tubues.
1636.

In honeybees and butterflies the gustatory and olfactory receptor are located, respectively onA. Mounh parts, antennaeB. Feet, antennaeC. Probasciis, legsD. Mandibles, antennae

Answer» Correct Answer - B
Feet, antennae
1637.

In the mouth parts of cockroach the galea and lacinia form parts of theA. mandiblesB. maxillaeC. labiumD. labrum

Answer» Correct Answer - B
1638.

Choose the correct statementA. All mammals are viviparousB. All cyclostomes do not possess jaws and paired fins.C. All reptiles have a three-chambered heartD. All pisces have gills covered by an operaculum.

Answer» Correct Answer - B
1639.

The characteristic cells of coelentrates areA. colloblasts present in epidermis onlyB. Cnidoblasts present in epidermis onlyC. Cnidoblasts present in both epidermis and gastrodermisD. Flame cells

Answer» Correct Answer - B
Cnidoblasts present in epidermis only
1640.

Select the incorrect statement about the phylum aschelminthes.A. Alimentary canal complete with well-developed muscular pharynxB. Sexes are separate (dioecious)C. Often females are longer than malesD. Fertilization is external

Answer» Correct Answer - D
In Aschelminthes, fertilization is internal.
1641.

Which of the following is incorrect match?A. Physalia-portuguese man of warB. Meandrina- staghorn coralC. gorgonia-sea fanD. Pennatula-sea pen

Answer» Correct Answer - B
Meandrina- staghorn coral
1642.

Cell aggregate plan is found inA. CnidariansB. SpongesC. RoundwormsD. Flatworms

Answer» Correct Answer - B
(b) The cell aggregate plan is seen in simplest animals, such as sponge. This plan exhibits essentially cluster of cells with rudimentary of labour amongest them.
1643.

Tentacles of ctenophores containA. CnidoblastsB. ColloblastsC. Comb platesD. Statocysts

Answer» Correct Answer - B
Colloblasts
1644.

Assertion:Mammalian teeth are heterodont. Reason: Mammalian teeth are embedded in a socket of jaw.A. If both assertion and reason are true and reason is the correct explanation of assertion.B. If both assertion and reason are true but reason is not the correct explanation of assertion.C. If assertion is true but reason is false.D. If both assertion and reason are false.

Answer» Correct Answer - b
In class Mammalia, teeth are of different types (heterdont) and are embedded in the socket of jaw (thecodont). These are developed twice during the life time of the animal (diphyodont), i.e., milk and permanent teeth.
1645.

Enterocoelous coelom is found inA. DeuterostomiaB. AstomiaC. ProtostomiaD. Blastostomia

Answer» Correct Answer - A
(a) Echinodermates and chordates are deuterostomous animals, in which blastopore of gastrula forms anus, so anus is formed earlier then mouth.
1646.

Solenocytes and nephridia are respectively found inA. Platyhelminthes and AnnelidsB. Annelids and NematodaC. Cnidaria and MolluscaD. Mollusca and Echinodermata

Answer» Correct Answer - A
(a) Flame cell or solenocyte or protonephridia and nephridia are excretory organs of phylum platyhelminthes and annelida respectively.
1647.

To which of the following class Limulus belongsA. ChilopodaB. ArachnidaC. CrustaceaD. Merostomata

Answer» Correct Answer - D
(b) Posion of cobra is most virulent. It is a neurotoxin attacking nerve centres and causing paralysis of muscles, especially those of respiratory muscles.
1648.

Number of moults undergones by caterpillar of Bombys mori isA. 2B. 4C. 6D. 8

Answer» Correct Answer - B
(b) The loss of water form body is prevented by dry cornified scales on the body of reptiles It is a favorable land adaptation
1649.

Larva like stage of Hydra isA. HydrulaB. HydratubaC. ScyphulaD. Planula

Answer» Correct Answer - D
(d) During the development in Hydra, a solid gastrula is formed. The solid gastrula is neither ciliated nor free swimming because it is still attached to the parent body This type of gastrula is characteristically called stereogastrula which represents the planula stage of hydrula.
1650.

The larva of hydra isA. PlanulaB. RhabditoidC. TrochophoreD. None of these

Answer» Correct Answer - D
(d) Larval stage is absent in Hydra.