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NEET • BIOLOGY • ANIMAL KINGDOM

Animal kingdom practice · Mixed difficulty

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Showing 31-60 of 176 questions

31 Medium

31 of 176

Remembering +4 | -1

In Leucosolenia, gametes develop from

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Correct option: B

Archaeocytes

Option B (Archaeocytes) is correct because archaeocytes are totipotent cells in sponges that can differentiate into gametes.

32 Hard

32 of 176

Understanding +4 | -1

Which of the following statements are true/false?
I. Cell aggregate body plan is found in phylum-Platyhelminthes
II. Radial symmetry is the most common symmetry found in animals
III. Pseudocoelom is only found in phylum-Aschelminthes
IV. All triploblastic animals have a true coelom
V. Haemocoel is sometimes observed in animals belonging to phylum-Platyhelminthes

View answer and explanation

Correct option: D

I, II, IV and V are false, only III is true

Option D (I, II, IV and V are false, only III is true) is correct because only statement III is accurate: Pseudocoelom is indeed only found in phylum-Aschelminthes.

33 Hard

33 of 176

Remembering +4 | -1

Engulfing of food either in solid or liquid is called

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Correct option: B

Holozoic nutrition

Option B (Holozoic nutrition) is correct because holozoic nutrition involves the ingestion of solid or liquid food particles.

34 Medium

34 of 176

Understanding +4 | -1

Consider following features
a) Organ system level of organisation
b) Bilateral symmetry
c) True coelomates with segmentation of body
Select the correct option of animal groups which possess all the above characteristics

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Correct option: A

Annelida, Arthropoda and Chordata

Option A (Annelida, Arthropoda and Chordata) is correct because these three phyla exhibit organ system level organization, bilateral symmetry, true coelom, and segmentation.

35 Hard

35 of 176

Understanding +4 | -1

Which of the following statement(s) is/are correct regarding phylum coelenterata?

(i) They are aquatic, mostly marine, sessile or free- swimming, radially symmetrical animals.

(ii) They have a central gastro-vascular cavity with a single opening called hypostome.

(iii) Digestion is extracellular and intracellular.

(iv) Examples are Sycon, Spongilla and Euspongia.

View answer and explanation

Correct option: C

(i), (ii) and (iii)

Option C ((i), (ii) and (iii)) is correct because coelenterates are aquatic, radially symmetrical, have a gastrovascular cavity with a hypostome, and exhibit both extracellular and intracellular digestion.

36 Medium

36 of 176

Understanding +4 | -1

How many of the following are characteristic of at least some members of the phylum cnidaria?
(A) A gastrovascular cavity (B) A Polyp stage (C) A Medusa stage (D) Cnidocytes (E) A Peudocoelom

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Correct option: D

Four of these

Option D (Four of these) is correct because Cnidaria possess a gastrovascular cavity, can have a polyp stage, can have a medusa stage, and possess cnidocytes.

37 Easy

37 of 176

Understanding +4 | -1

Tissue level of organisation is seen in

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Correct option: D

None of these

Option D (None of these) is correct because tissue level of organization is seen in Coelenterates (Cnidaria). Platyhelminthes have organ level of organization, Chordata have organ system level of organization and Arthropoda also have organ system level of organization.

38 Medium

38 of 176

Remembering +4 | -1

Which of the following does not belong to the class-Hexactinellida?

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Correct option: B

Cliona

Option B (Cliona) is correct because Cliona belongs to the class Demospongiae, not Hexactinellida.

39 Medium

39 of 176

Analyzing +4 | -1

Which set of animals doesn’t belong to the same phylum?

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Correct option: D

Devil fish, King crab, Chiton

Option D (Devil fish, King crab, Chiton) is correct because Devil fish (Octopus) belongs to Mollusca, King crab belongs to Arthropoda, and Chiton belongs to Mollusca.

40 Easy

40 of 176

Understanding +4 | -1

Choose the incorrect match.

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Correct option: D

Pteropus - Air bladder is present

Option D (Pteropus - Air bladder is present) is the incorrect match because Pteropus (a bat) is a mammal and possesses lungs for respiration, not an air bladder which is found in bony fishes.

41 Easy

41 of 176

Understanding +4 | -1

Which of the following have porous body and are diploblastic?

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Correct option: C

Sycon and spongilla

Option C (Sycon and spongilla) is correct because both Sycon and Spongilla are sponges (Porifera) with porous bodies and are diploblastic.

42 Hard

42 of 176

Remembering +4 | -1

The nitrogeneous metabolic waste in Hydra is mostly

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Correct option: A

Ammonia and is removed from whole surface of body

Option A (Ammonia and is removed from whole surface of body) is correct because Hydra excretes ammonia as its primary nitrogenous waste, and it's removed directly through the body surface.

43 Hard

43 of 176

Remembering +4 | -1

A sponge harmful to oyster industry is

View answer and explanation

Correct option: A

Cliona

Option A (Cliona) is correct because Cliona, a boring sponge, can damage oyster shells, harming the oyster industry.

44 Hard

44 of 176

Understanding +4 | -1

Which one is correct?

View answer and explanation

Correct option: D

Both (b) and (c)

Option D (Both (b) and (c)) is correct because the notochord is mesodermally derived and present in chordates, and arthropoda are indeed non-chordates.

45 Easy

45 of 176

Remembering +4 | -1

‘Portuguese man of war’ is

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Correct option: B

Physalia

Option B (Physalia) is correct because Physalia, commonly known as the Portuguese man-of-war, is a colonial hydrozoan belonging to the phylum Cnidaria.

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46 Easy

46 of 176

Remembering +4 | -1

Hydroskeleton is not found in

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Correct option: D

Cnidarian

Option A (Mollusca) is correct because Cnidarians use a hydrostatic skeleton, while Mollusca typically rely on shells or muscular hydrostats.

47 Medium

47 of 176

Remembering +4 | -1

Animals of the phyla ______ and – are exclusively marine

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Correct option: B

Ctenophora, Echinodermata

Option B (Ctenophora, Echinodermata) is correct because both Ctenophora (comb jellies) and Echinodermata (starfish, sea urchins, etc.) are exclusively marine phyla.

48 Medium

48 of 176

Understanding +4 | -1

The organisms with tissue grade level of organization and reproduce only by sexual means

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Correct option: C

Ctenophora

Option C is correct because Ctenophora have tissue-level organization and reproduce only sexually.

49 Hard

49 of 176

Remembering +4 | -1

Tube-within-tube body plan is found in which animal?

View answer and explanation

Correct option: B

Fasciola

Option B (Fasciola) is correct because Fasciola (a flatworm) exhibits a tube-within-a-tube body plan, having a mouth and an anus.

50 Easy

50 of 176

Analyzing +4 | -1

Select the odd one w.r.t. level of organisation.

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Correct option: C

Cnidaria

Option C (Cnidaria) is the odd one out because Cnidaria exhibits tissue level of organization, while Annelida, Mollusca, and Aschelminthes exhibit organ system level of organization.

51 Easy

51 of 176

Understanding +4 | -1

List the phyla in the correct order of their placement in classification
I. Chordata II. Annelida
III. Arthropoda IV. Platyhelminthes
V. Ctenophora VI. Aschelminthes

View answer and explanation

Correct option: C

V, IV, VI, II, III, I

Option C (V, IV, VI, II, III, I) is correct because it represents the correct evolutionary order of the listed phyla.

52 Easy

52 of 176

Remembering +4 | -1

Radial symmetry is NOT found in adults of phylum ______

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Correct option: D

Hemichordata

Option D (Hemichordata) is correct because adult hemichordates exhibit bilateral symmetry, while the other phyla listed (Coelenterata, Echinodermata, Ctenophora) exhibit radial symmetry.

53 Medium

53 of 176

Remembering +4 | -1

Which one of the following is not a characteristic feature of sponges?

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Correct option: D

Body supported by chitin

Option D (Body supported by chitin) is correct because sponges have spicules or spongin fibers for support, not chitin.

54 Easy

54 of 176

Understanding +4 | -1

Animals are classified on the basis of which of the following features?
I. Coelomic cavity II. Level of organisation
III. Notochord IV. Skeletal structure

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Correct option: C

I, II and III

Option C (I, II and III) is correct because coelomic cavity, level of organisation and notochord are all used in animal classification.

55 Medium

55 of 176

Understanding +4 | -1

Read the following statements and choose the correct answer.
A. The amphibians possess eyelids and tympanum represents ear in them
B. Animals which possess paired and unpaired fins are included in super class Pisces

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Correct option: A

Both statements A and B are correct

Option A (Both statements A and B are correct) is correct because amphibians do possess eyelids and a tympanum representing the ear, and Pisces includes animals with paired and unpaired fins.

56 Medium

56 of 176

Remembering +4 | -1

Feeding type of animals belonging to phylum-Porifera is

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Correct option: C

Filter feeders

Option C (Filter feeders) is correct because sponges filter water to obtain food particles.

57 Medium

57 of 176

Remembering +4 | -1

Which are the belongs to Asymmetry

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Correct option: C

Porifera

Option C (Porifera) is correct because sponges (Porifera) are asymmetrical, meaning they lack a defined symmetry.

58 Hard

58 of 176

Understanding +4 | -1

Assertion (A): Polymorphism is a speciality of coelenterates where alternation in generation occurs
Reason (R): It helps in species dispersal

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Correct option: C

Assertion is true but Reason is false

Option C (Assertion is true but Reason is false) is correct because polymorphism is a characteristic of coelenterates, but it's not primarily for species dispersal.

59 Medium

59 of 176

Understanding +4 | -1

Which one of the following groups of animals is bilaterally symmetrical and triploblastic?

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Correct option: B

Aschelminthes (roundworms)

Option B (Aschelminthes (roundworms)) is correct because Aschelminthes are bilaterally symmetrical and triploblastic.

60 Medium

60 of 176

Understanding +4 | -1

Which of the following animals have scattered cells with tissue grade organization?

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Correct option: B

Hydra

Option B is correct because Hydra (a cnidarian) exhibits tissue-level organization, with cells organized into tissues but lacking organs.

Revision notes and key takeaways

Review ANIMAL KINGDOM in your textbook or class notes, then use this set to check your understanding.

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