PrepBharat

1. Select the total number of organism which shows internal fertilization.
Ascaris, Wuchereria, Ancylostoma, Taenia, Fasciola, Sycon, Euspongia, Spongilla, pleurobrachia, ctenoplana
a) 6
b) 7
c) 8
d) 5

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2. Which character does not belong to phylum Aschelminthes?
a) Excretory tube (branched ducts) removes body waste form the body cavity through excretory pore.
b) Usually sexes are separate (unisexual or dioecious).
c) Development may be direct or indirect
d) Alimentary canal is incomplete with a well-developed muscular pharynx.

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3. Match the following:
Column I          Column II
A. Ascaris    –      1. Intestinal round worm
B. Wuchereria    –  2. Filarial worm
C. Ancylostoma    –  3. Hook worm
D. Pheretima    –  4. Earth worm
a) A–2, B–4, C–3, D–1
b) A–1, B–2, C–3, D–4
c) A–4, B–3, C–1, D–2
d) A–2, B–1, C–4, D–3

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4. Which of the following is correct about ascaris?
a) Females are smaller than males
b) Posterior end of male curved dorsally
c) Females are longer than males
d) Fertilization is external

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5. Select the total number of organism from the following which contains well-developed muscular pharynx with complete alimentary canal.
Taenia, Fasciola, Planaria, Ascaris, Filarial worm, Hookworm
a) 1
b) 3
c) 4
d) 2

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6. Metamerism is found in
a) Ascaris
b) Leech
c) Loligo
d) Octopus

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7. Nephridia helps in the excretion and osmoregulation in
a) Nereis
b) Pheretima
c) Hirudinaria
d) All of these

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8. Closed circulatory system is present in
a) Nereis
b) Pheretima
c) Ascaris
d) Both (a) and (b)

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9. Animals having cylindrical body having an organ system level of organization showing metamerism belongs to phylum
a) Arthropoda
b) Mollusca
c) Annelida
d) Platyhelminthes

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10. Annelids may be
a) Aquatic (marine and fresh water), terrestrial
b) Free living
c) Parasite
d) All of the above

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