Zoology Questions: Animal Kingdom, Cockroach, Structural Organization in Animals, Reproductive Health
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Animal Kingdom: Non-Chordata-Porifera, Coelenterata, Platyhelminthes, Nemathelminthes
1. Radial symmetry occurs in
(a) Fishes
(b) Molluscs
(c) Coelenterata
(d) Sponges
Answer: (c)
2. Level of organization in sponges is
(a) cellular level
(b) acellular level
(c) tissue level
(d) organ-system level
Answer: (a)
3. Sponges and coelenterates resemble each other in being
(a) monoblastic and acoelomate
(b) diploblastic and acoelomate
(c) triploblastic and acoelomate
(d) triploblastic and pseudocoelomate
Answer: (b)
4. Evolution of porifera from protozoan is evidenced by the animals like
(a) Euglena
(b) Chlamydomonas
(c) Volvox
(d) Paramecium
Answer: (c)
5. In sponges, free swimming larva is called as
(a) veliger
(b) trochophore
(c) parenchymula
(d) bipinnaria
Answer: (c)
6. Water currents in Leucosolunia are produced by
(a) choanocytes
(b) pinacocytes
(c) archaeocytes
(d) thesocytes
Answer: (a)
7. The common bath sponge belongs to the genus
(a) Sycon
(b) Leucosolenia
(c) Euspongia
(d) Spongilla
Answer: (c)
8. Path of water in a sponge is
(a) Dermal ostia Gastral ostia Osculum.
(b) Dermal ostia Gastral ostia Spongocoel Osculum.
(c) Osculum Spongocoel Choanocytes Ostia.
(d) Pinacocytes Choanocytes Enteron Osculum.
Answer: (b)
9. Choanocytes in ascon-type of canal system form lining of
(a) spongocoel
(b) porocyte
(c) apopyle
(d) Incurrent canal
Answer: (b)
10. Which of the following are ‘multicellular grade’ organisms?
(a) Sponges
(b) Coelenterates
(c) Prokaryotes
(d) Vertebrates
Answer: (a)
11. Sycon belongs to a group of animals which are best described as
(a) Unicellular or acellular.
(b) Multicellular without any tissue organization.
(c) Multicellular with a gastro vascular cavity.
(d) Multicellular having tissue organization, but no body cavity.
Answer: (b)
12. Which is not applicable to coelenterate?
(a) Coelenterons
(b) Choanocytes
(c) Nematocyst
(d) Radial symmetry
Answer: (c)
13. Budding is a normal mode of asexual reproduction in
(a) Starfish and hydra
(b) Hydra and sponges
(c) tapeworm and Hydra
(d) Sponges and starfish
Answer: (b)