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Assertion Reason Test: Animal Kingdom


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19 Questions MCQ Test Additional Documents & Tests for NEET | Assertion Reason Test: Animal Kingdom

Assertion Reason Test: Animal Kingdom for NEET 2022 is part of Additional Documents & Tests for NEET preparation. The Assertion Reason Test: Animal Kingdom questions and answers have been prepared according to the NEET exam syllabus.The Assertion Reason Test: Animal Kingdom MCQs are made for NEET 2022 Exam. Find important definitions, questions, notes, meanings, examples, exercises, MCQs and online tests for Assertion Reason Test: Animal Kingdom below.
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Assertion Reason Test: Animal Kingdom - Question 1

A: Cysticercosis is caused by accidental ingestion of onchospheres.

R: Taenia solium is a monogenetic parasite.

Detailed Solution for Assertion Reason Test: Animal Kingdom - Question 1 Assertion is true, i.e. cysticercosis is caused by accidental ingestion of onchosphere larvae. Reason is false as Taenia solium is a digenetic parasite, having humans as primary host and pig as a secondary host.

 

Assertion Reason Test: Animal Kingdom - Question 2

A: Mantle of pearl oyster is three-layered.

R: Nacre secreting cells are present just below the nacreous layer.

Detailed Solution for Assertion Reason Test: Animal Kingdom - Question 2 Assertion is true, i.e. Mantle of pearl oyster is three-layered.

Reason is also true, i.e. Nacre secreting cells are present just below the nacreous layer.

But reason is not the correct explanation for assertion. 

 

Assertion Reason Test: Animal Kingdom - Question 3

A: Annelids, arthropods and molluscs are protostomial coelomates.

R: All three phyla include members with bilateral symmetry and true coelom.

Detailed Solution for Assertion Reason Test: Animal Kingdom - Question 3 Assertion is true, i.e. Annelids, arthropods, and molluscs are protostomial coelomates. In all three mouths develops first in an embryonic digestive tube.

Reason is also true, i.e. all three phyla include members with bilateral symmetry and true coelom.

But the reason is not the correct explanation for assertion.

 

Assertion Reason Test: Animal Kingdom - Question 4

A: In Balanoglossus, the proboscis is involved in excretion.

R: Glomerulus is present is probosis.

Detailed Solution for Assertion Reason Test: Animal Kingdom - Question 4 Assertion is true, i.e. In Balanoglossus, the proboscis is involved in excretion.

Balanoglossus belong to phylum hemichordate where proboscis gland performs an excretory function.

Reason is also true, i.e. Glomerulus is present in proboscis responsible for or mediating the excretory function of proboscis gland. Both Assertion and reason are correct, and reason is the correct explanation for assertion.

 

Assertion Reason Test: Animal Kingdom - Question 5

A: Echinoderms are the only radially symmetrical animals with true coelom.

R: Echinoderms have secondarily adapted to radial symmetry.

Detailed Solution for Assertion Reason Test: Animal Kingdom - Question 5 Assertion is true; Echinoderms are only radially symmetrical animals with true coelom.

Reason is also true as echinoderms have secondarily adapted to radial symmetry because larval forms of echinoderm are bilaterally symmetric, but adults are radially symmetric.

Both assertion and reason are correct, but reason is not the correct explanation for assertion. 

 

Assertion Reason Test: Animal Kingdom - Question 6

A: Hydra has a nerve net, but no brain.

R: All its neurons are apolar and connected.

Detailed Solution for Assertion Reason Test: Animal Kingdom - Question 6 Assertion is true, In Hydra, nerve cells are present which join to form nerve net, but nerve cells are not organized to form brain in Hydra.

Reason is also true as neurons in Hydra are apolar. These apolar neurons (with no axon terminals) can join to form nerve net. Hence both Assertion and Reason are correct, and Reason is the correct explanation for Assertion.

 

Assertion Reason Test: Animal Kingdom - Question 7

A: Radula is rasping organ of all molluscs.

R: It is made up of vitrodentine.

Detailed Solution for Assertion Reason Test: Animal Kingdom - Question 7 Assertion is false as radula is not present in all molluscs.

Radula is absent in class pelecypoda (Bivalvia) of molluscs.

Reason is also false as radula bears chitinous teeth.

Both assertion and reason are false. 

 

Assertion Reason Test: Animal Kingdom - Question 8

A: True coelom originated for the first time in phylum Annelida.

R: It allowed the animal to have an alimentary canal longer than the body & space for storing gametes.

Detailed Solution for Assertion Reason Test: Animal Kingdom - Question 8 Assertion is true, True coelom (lined by mesoderm) on both sides for first time originated in phyla Annelida.

Reason is true, and Annelids have longer alimentary canal than body and space for storing gametes.

Both Assertion and Reason are correct, but Reason is not the correct explanation for Assertion. 

 

Assertion Reason Test: Animal Kingdom - Question 9

 

A: Chitinous exoskeleton is a characteristic feature of arthropods.

R: It allows diffusion of water vapour from the atmosphere to the body.

Detailed Solution for Assertion Reason Test: Animal Kingdom - Question 9 Assertion is true, Chitinous exoskeleton is a characteristic feature of arthropods.

Reason is false as chitin is impermeable to water and does not allow water vapour diffusion from atmosphere to body or vice-versa.

Assertion is true, but Reason is false.

 

Assertion Reason Test: Animal Kingdom - Question 10

A: In metatherians, scrotum is present in front of penis.

R: In prototherians, scrotum is present behind the penis.

Detailed Solution for Assertion Reason Test: Animal Kingdom - Question 10 Assertion is correct as in sub-class Metatheria of class Mammalia, penis in male is bifurcated and scrotum is present in front of penis.

Reason is false as in sub-class Prototheria of class Mammalia, testis is abdominal and remains inside abdominal cavity.

 

Assertion Reason Test: Animal Kingdom - Question 11

A: Birds have metanephric kidney and no urinary bladder.

R: South American Ostrich has urinary bladder.

Detailed Solution for Assertion Reason Test: Animal Kingdom - Question 11 Assertion is correct as birds have advanced metanephric kidneys and urinary bladder is absent as a flight adaptation.

Reason is correct as the south American ostrich (Rhea Americana) is a flightless bird with urinary bladder (Exception).

Both Assertion and Reason are true, but reason is not the correct explanation for assertion. 

 

Assertion Reason Test: Animal Kingdom - Question 12

A: All birds, except Koel (cuckoo), build nests for retiring and taking rest during night time.

R: Koel lays eggs in the nests of tailorbird.

Detailed Solution for Assertion Reason Test: Animal Kingdom - Question 12 Assertion is correct as all birds except koel (Cuckoo), build nest for retiring and rest during night time. Koel does not build his own nest.

Reason is false as Koel exhibit Brood Parasitism, as Koel lays egg in crow nest.

 

Assertion Reason Test: Animal Kingdom - Question 13

A: The duck-billed platypus and the spiny ant-eater are egg-laying animals yet are grouped under mammals.

R: Both of them have seven cervical vertebrae and mammary glands without teats.

Detailed Solution for Assertion Reason Test: Animal Kingdom - Question 13 Assertion is correct as a duck billed platypus and spiny anteater are oviparous mammals but are grouped under mammals due to other mammalian features, such as the presence of seven cervical vertebrae in the neck and mammary gland (without teats).

Both Assertion and Reason are correct, and Reason is the correct explanation for Assertion.

 

Assertion Reason Test: Animal Kingdom - Question 14

A: Bats and whales are classified as mammals.

R: Bats and whales show echolocation and four chambered heart.

Detailed Solution for Assertion Reason Test: Animal Kingdom - Question 14 Assertion is correct as bats (chiroptera order) and whales (cetacea order) are classified as mammals.

Reason is correct as bats and whales show echolocation and possess four chambered heart.

Both Assertion and Reason are correct, but Reason is not a correct explanation for Assertion. 

 

Assertion Reason Test: Animal Kingdom - Question 15

A: Piscean scales are similar to reptilian scales in origin.

R: Age of the animal can be deduced by lines of growth on both the scales.

Detailed Solution for Assertion Reason Test: Animal Kingdom - Question 15 Assertion is false, as scales in fishes are mesodermal in origin whereas scales in reptiles are epidermal.

Reason is true as animals' age can be deduced by lines of growth on both the scales.

 

Assertion Reason Test: Animal Kingdom - Question 16

A: Dicondylic skull is found in amphibians and mammals.

R: The number of cranial nerves in amphibians and mammals is same.

Detailed Solution for Assertion Reason Test: Animal Kingdom - Question 16 Assertion is correct as amphibian and mammals possess dicondylic skull.

Reason is false as amphibian possess 10 pairs of cranial nerves and mammals to possess 12 pairs of cranial nerves. 

 

Assertion Reason Test: Animal Kingdom - Question 17

A: Evolution of shelled eggs helped the reptiles to successfully adapt for terrestrial life.

R: The origin of shelled eggs occurred earlier than viviparity.

Detailed Solution for Assertion Reason Test: Animal Kingdom - Question 17 Assertion is true as reptiles are first successful land vertebrate and formation of shell around eggs helped reptiles in terrestrial adaptation.

Reason is wrong as viviparity is exhibited by mammals, some reptiles, and some lower animals even before shelled egged animals first evolved.

 

Assertion Reason Test: Animal Kingdom - Question 18

A: All chordates have kidneys as excretory organs.

R: Kidneys help in the removal of metabolic wastes along with regulating the osmolarity of body fluids.

Detailed Solution for Assertion Reason Test: Animal Kingdom - Question 18 Assertion is false, all chordates do not possess kidneys as excretory organs. e.g. Urochordata – neural glands for excretion Cephalochordata – protonephridia for excretion In vertebrates and other chordates, a specialized organ, kidney function in both osmoregulation and excretion. Assertion is false, Reason is true.

 

Assertion Reason Test: Animal Kingdom - Question 19

A: The lungs of birds are provided with air sacs.

R: Air sacs supplement respiration.

Detailed Solution for Assertion Reason Test: Animal Kingdom - Question 19 Assertion is true as air sacs are connected to lungs in birds. To bring fresh air to the lungs, birds use eight or nine air sacs situated on either side of the lungs.

Reason is also true as air sacs make ventilation in birds highly efficient. Air sacs ensure air flow over the gas exchange surface in only one direction and do not allow mixing of air. Thus air sacs supplement respiration in birds.

Both Assertion and Reason are true, but Reason is not the correct explanation for Assertion.

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