PrepBharat

1. Platyhelminthes are called flat worms because
a) They are triploblastic
b) They are without coelom
c) They have organ level of organization
d) Their body is dorsoventrally flattened

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2. Which of the following are characters present in platyhelminthes?
(1) Some absorb nutrients from the host directly through their body surface.
(2) Digestive system is incomplete, branched and without anus.
(3) Flame cells/solenocyte protonephridia help in the excretion and osmoregulation.
(4) Hooks and suckers are present in parasitic form.
(5) Hermaphrodites
(6) Fertilization is internal.
(7) Indirect development through many larva stages.
a) 1, 2, 3, 5, 6
b) 2, 3, 4, 5, 7
c) All except 1
d) All

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3.Which platyhelminthes posses high power of regeneration?
a) Planaria/Dugesia
b) Taenia
c) Fasciola
d) Liver fluke

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4. Flame cells helps in excretion and osmoregulation in
a) Earthworm
b) Hookworm
c) Roundworm
d) Tapeworm

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5. Internal fertilization is seen in
a) Pleurobrachia
b) Fasciola
c) Ctenoplana
d) All of these

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6. (1) Fertilization ______.
(2) Development ______.
(3) Excretion and osmoregulation by ______.
Fill in the blanks for organism given in the figure.

a) Internal, direct, rennett cells
b) Internal, indirect, flame cells
c) External, direct, nephridia
d) External, indirect, protonephridia

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7.Phylum whose organism are mostly endoparasites is
a) Platyhelminthes
b) Annelida
c) Arthropoda
d) Mollusca

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8. Which of the following are pseudocoelomate?
a) Roundworm
b) Hookworm
c) Filarial worm
d) All of these

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9. The body of the aschelminthes is circular in cross section. Hence, it is named as
a) Tapeworm
b) Earthworm
c) Hookworm
d) Roundworm

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10. Roundworms/Nematodes are
a) Free living
b) Aquatic or terrestrial
c) Parasitic on animals and plants
d) All of these

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