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Biological Classification Animals II MCQ
Quiz 4
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Q.1
Roundworms differ from flatworms in possessing
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a) Flame cells
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b) Pseudocoelom
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c) Segmented body
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d) Production of antienzymes
Explanation
Answer:(b)
Q.2
Match the columns:
Column I
Column II
a Ancylostoma
1 Hookworm
b Wuchereria
2 Filarial worm
c Ascaris
3 Roundworm
d Fasciola
4 Liver fluke
- - - -
5 Flatworms
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a) a →1 , b → 4, c → 3 , d → 5
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b) a →2 , b → 5, c → 1 , d → 3
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c) a →4 , b → 1, c → 5 , d → 3
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d) a →1 , b → 2, c → 3 , d → 4
Explanation
Answer:(d)
Q.3
Shizocoelomates and enterocoelomates are:
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a) Acoelomates.
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b) Invertebrates
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c) Pseudocoelomates.
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d) Molluscans and echinoderms.
Explanation
Answer:(d)
Q.4
Haemocoel is present in
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a) Metaphire
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b) Periplaneta
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c) Sponge
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d) Ascaris
Explanation
Answer:(b)
Q.5
Common larva of sponge is
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a) Tadpole
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b) Planula
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c) trochophore larva
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d) Parenchymula
Explanation
Answer:(d)
Q.6
Which phylum has none of freshwater form?
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a) Chordata
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b) Porifera
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c) Echinodermata
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d) Mollusca
Explanation
Answer:(c)
Q.7
Which of the following has correct grouping?
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a) Centipede, millipede, silverfish- Arthropoda
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b) Cuttlefish,silverfish,sea urchin –Coelenterata
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c) Taenia solium,roundworm,flatworm – Platyhelminthes
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d) Hydra, Spongia, Obelia-Cnidara
Explanation
Answer:(b)
Q.8
Identify the given figure labelled a ,b and c.
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a) a – Sycon, b – Spongilla, c – Euspongia.
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b) a- Scypha, b – Bath sponge, c – Fresh water sponge.
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c) a – Euspongia, b – Spongilla, c – Sycon.
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d) a – Fresh water sponge, b – Bath sponge, c – Scypha
Explanation
Answer:(b)
Q.9
Metagenesis is represented by:
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a) Medusae → Polyp → Egg → Planula → Medusae.
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b) Egg → Planula → Medusae → Polyp → Medusae.
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c) Polyp → Medusae → Egg → Planula → Polyp.
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d) Polyp → Egg → Medusae → Planula → Polyp.
Explanation
Answer:(c)
Q.10
Consider the statements: (i) Molluscans are triploblastic, coelomates and are usually dioecious. (ii) Molluscans are terrestrial, marine or fresh water inhabitants. (iii) In Molluscs, anterior head region has sensory tentacles.
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a) All are correct.
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b) Only (i) is wrong
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c) (i) and (ii) are wrong.
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d) (ii) and (iii) are wrong
Explanation
Answer:(a)
Q.11
Which of the following statement is wrong regarding Obelia?
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a) Exhibits alternation of generation or metagenesis.
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b) In their life cycle, the sexual phase alternates with the asexual phase.
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c) Polyp produces medusae sexually and medusae forms polyp asexually.
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d) Polyp produces medusae asexually and medusae forms polyp sexually
Explanation
Answer:(c)
Q.12
Which of the following statements are true/false: (i) Cell aggregates body plan is found in phylum Platyhelminthes. (ii) Radial symmetry is the most common symmetry found in animals. (iii) Pseudocoelom is found only in phylum Aschelminthes. (iv) All triploblastic animals have true coelom. (v) Haemocoel is sometimes observed in animals belonging to phylum Platyhelminthes.
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a) (i) and (v) are true and (ii), (iii) and (iv) are false.
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b) (ii), (iii) and (v) are true and (i) and (iv) are false.
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c) (i), (ii) and (iii) are true and (iv) and (v) are false
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d) (i), (ii), (iv) and (v) are false, only (iii) is true.
Explanation
Answer:(d)
Q.13
The stage absent in the file cycle of Schistosoma is
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a) Miracidium
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b) Redia
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c) Cercaria
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d) Both b and c
Explanation
Answer:(b)
Q.14
An insect differs from spider in having:
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a) 3 pairs of legs and 2 pairs of wings instead of 4 pairs of legs and no wings.
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b) 3 pairs of legs and 2 pairs of wings instead of 3 pairs of legs and no wings.
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c) 3 pairs of legs and no wings instead of 5 pairs of legs and generally one pair of wings.
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d) 6 pairs of legs and one pair of wings instead of 4 pairs of legs and no wings.
Explanation
Answer:(a)
Q.15
Sensory structure of cnidoblast is
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a) Cnidocil
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b) Refractile rods
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c) Myonemes
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d) Operculum
Explanation
Answer:(a)
Q.16
A list of animals are given below. Identify the animals with bilateral symmetry, Triploblasty and open circulation: (i) Liver flukes. (ii) Grasshopper (iii) Earthworm (iv) Oyster (v) Neries. (vi) Saccoglossus.
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a) (ii), (iii) and (vi)
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b) (ii), (iv) and (vi)
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c) (i), (iii) and (iv)
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d) (ii), (iii), (iv) and (vi)
Explanation
Answer:(b)
Q.17
The level of organisation seen in roundworms:
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a) Organ level
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b) Tissue level
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c) Protoplasmic level
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d) Organ system level
Explanation
Answer:(d)
Q.18
Find out the true description regarding ctenophores:
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a) Bilaterally symmetrical and diploblastic organisms.
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b) Sexes are separate.
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c) Flame cells helps in osmoregulation.
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d) External fertilization and indirect development.
Explanation
Answer:(d)
Q.19
Which of the following groups of animals are bilaterally symmetrical and triploblastic:
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a) Scypha, Meandrina, Physalia.
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b) Taenia, Pennatula, Antedon
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c) Ancylostoma, Locusta, Loligo.
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d) Antedon, Adamsia, Ascaris.
Explanation
Answer:(c)
Q.20
Metagenesis is:
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a) Form of asexual reproduction in cnidarians.
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b) Form of sexual reproduction in cnidarians.
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c) Alternation of sexual and asexual life stages in Cnidaria
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d) Metamorphosis of Planula larva into adult.
Explanation
Answer:(c)
Q.21
Members of which of the following phyla exhibit adaptations so widely varies environmental conditions
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a) Coelenterata
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b) Porifers
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c) Echinoddermata
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d) Mollusca
Explanation
Answer:(d)
Q.22
Nephridia develop from
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a) Ectoderm
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b) Mesoderm
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c) Endoderm
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d) Archenteron
Explanation
Answer:(a)
Q.23
Which of this is an insect?
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a) Pinworm
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b) Hookworm
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c) Silkworm
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d) Earthworm.
Explanation
Answer:(c)
Q.24
Which among the following statements is incorrect about metagenesis:
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a) Alternation of asexual and sexual phases in the life cycle of Obelia is called metagenesis
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b) Metagenesis is similar to alternation of generation found in plants
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c) Both Medusa and polyp are diploid
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d) Medusa is the sexual phase and polyp is the asexual phase
Explanation
Answer:(b)
Q.25
Which of the following animals is not Mollusca?
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a) Sea pen
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b) Sea hare
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c) Sea lemon
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d) Sea butterfly
Explanation
Answer:(a)
Q.26
An important characteristic that hemichordates share with chordates is:
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a) Ventral tubular nerve chord
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b) Pharynx with gill slits
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c) Closed circulatory system
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d) Joint appendages
Explanation
Answer:(b)
Q.27
The segmentation or metamerism means:
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a) Body is externally and internally divided into segments
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b) Each segment of body has serial repetition of atleast some organs
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c) Both A and B
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d) There is no repetition of any organ in successive segments
Explanation
Answer:(c)
Q.28
Ambulacral grooves are absent in the living forms of the calss
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a) Asteroidea
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b) Echinoidea
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c) Qphiuroidea
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d) All of these
Explanation
Answer:(c)
Q.29
Which group of protochordates contains Balanoglossus?
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a) Urochordata
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b) Caphalochordata
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c) Tunicata
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d) Hemichordata
Explanation
Answer:(d)
Q.30
Hydra does not feed on lower animals because
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a) They are so small
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b) They are distasteful
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c) They lack glutathione
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d) All of the above
Explanation
Answer:(c)
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