Free Animal Kingdom (Monthly Quiz: 2) NEET Biology Questions & Answers with Detailed Explanation & Full Review

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Question-1

Refer the types of cells present in some animals. Each cell is specialized to perform a single specific function except

(a)

(b)

(c)

(d)

Explanation:

Answer: (a)

Interstitial cell refers to any one of a number of different types of cells characterized by their interstitial nature (i.e., their interposition between other cells that were usually characterized earlier or more completely). Cnidocytes is present in coelenterates as an organ used for prey capture and defense from predators. Choanocytes are flagellated cells, present in porifera and function as the sponge's digestive system. Gastrodermal cells are present in cnidarians and helps in digestion.

Question-2

A wood boring mollusc/shipworm is

(a)

(b)

(c)

(d)

Explanation:

Answer: (c)

The common name of Teredo is shipworm which belongs to the Class Bivalvia of the Phylum Mollusca. In it, head is absent and foot is wedge-shaped for burrowing. Shell consists of two valves. The common name of Chiton is the coat of mail shell (Class Amphineura), Limax is the grey slug (Class Gastropoda) and Patella is the true limpet (Class Gastropoda).

Question-3

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

(a)

(b)

(c)

(d)

Explanation:

Answer: (b)

Echinoderms are a phylum of marine animals. The adults are recognizable by their (usually five-point) radial symmetry, whereas the larvae are bilaterally symmetrical. For example starfish, sea urchins, sand dollars, and sea cucumbers, as well as the sea lilies or "stone lilies".

Question-4

Radial symmetry is often exhibited by animals having

(a)

(b)

(c)

(d)

Question-5

The larva stage shown by coelenterate is called

(a)

(b)

(c)

(d)

Question-6

Which one of the following is a matching pair of a body feature and the animal possessing it?

(a)

(b)

(c)

(d)

Question-7

In which of the following animals dimorphic nucleus is found?

(a)

(b)

(c)

(d)

Explanation:

Answer: (d)

Dimorphic nucleus means two types of nuclei are present in P. caudatum – large macronucleus and small micronucleus. The macronucleus is roughly kidneyshaped and with inconspicuous nuclear membrane. Macronucleus is the somatic or vegetative nucleus and controls the daytoday metabolic activities of the cell. The micronucleus is lodged in a depression on the surface of the macronucleus. It is usually spherical, with a nuclear membrane and with diploid number of chromosomes. It controls the reproductive activities of the organism. Amoeba, Trypanosoma and Plasmodium have only one nucleus.

Question-8

Metamorphosis of insects is regulated through hormone

(a)

(b)

(c)

(d)

Question-9

Assertion:
Coelenterates are triploblastic.
Reason:
Coelenterates contain mesoderm in between ectoderm and endoderm.

(a)

(b)

(c)

(d)

Question-10

In amphibians, respiration occurs through

(a)

(b)

(c)

(d)

Explanation:

Answer: (d)

In amphibia, respiration occurs through gills, lungs and skins. With the exception of a few frog species that lay eggs on land, all amphibians begin life as completely aquatic larvae. Respiratory gas exchange is conducted through thin, gas-permeable skin and the gills. As amphibian larvae develop, the gills (and in frogs, the tail fin) degenerate, paired lungs develop, and the metamorphosing larvae begin making excursions to the water surface to take air breaths.

Question-11

One character is given wrongly for phylum chordata mark it –

(a)

(b)

(c)

(d)

Explanation:

Answer: (a)

Vertebral column is present in the vertebrates only. It is not present in all the chordates.

Question-12

In case of poriferans, the spongocoel is lined with flagellated cells called

(a)

(b)

(c)

(d)

Explanation:

Answer: (c)

Spongocoel is the central body cavity of the sponges. It is lined by highly specialised flagellated cells called choanocytes.

Question-13

All are flying birds from the following except

(a)

(b)

(c)

(d)

Question-14

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

(a)

(b)

(c)

(d)

Explanation:

Answer: (c)

Prawn, scorpion and locusta belong to phylum Arthropoda. Arthropoda is the largest phylum of animalia, and includes the insects arachnids, crustaceans and others. It is a group of animals with features including bilaterally symmetrical, triploblastic tube within tube plan, organ system level of organization and metemerically segmented body.

Question-15

Match the name of the animal (column I), with one characteristic (column II) and the phylum/ class (column III) to which it belongs.
 Column IColumn IIColumn III
(a)Limulus Body covered by chitinous exoskeletonPisces
(b)AdamsiaRadially symmetricalPorifera
(c)PetromyzonEctoparasiteCyclostomata
(d)IchthyophisTerrestrial Reptilia

(a)

(b)

(c)

(d)

Question-16

Star fish belongs to

(a)

(b)

(c)

(d)

Question-17

Which of the following is correct about cyclostomes?

(a)

(b)

(c)

(d)

Question-18

Which of the following animals is not vivipa- rous?

(a)

(b)

(c)

(d)

Explanation:

Answer: (b)

Duckbilled platypus is an egg laying mammal. It is found in the rivers in eastern Australia and Tasmania. It is a beaver like monotreme about 5060 cm long and well adapted to live in water. Usually, two eggs are laid at a time. The female curls around them for incubation and remains inactive for about two weeks. Newly hatched young ones are very immature, naked, blind and each is 2.5 cm long.

Question-19

Tracheae of cockroach and mammal are similar in having

(a)

(b)

(c)

(d)

Explanation:

Answer: (c)

Tracheae act as passage of air during respiration in both cockroach and mammals. In cockroach, the cuticular lining is spirally thickened forming taenidia which prevents the tracheal tubes from collapsing. In mammals, cartilaginous rings supporting the walls of the tracheae prevent their collapsing.

Question-20

Radial symmetry is shown by

(a)

(b)

(c)

(d)

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