1. the level of organization found in coelentrata is
a. organ system
b.organ
c. tissue
d. cellular
2. Cavity of coelentrata is called
a. cavity
b. coelom
c. coelenteron
d. cnidocoel
note: the cavity is also called gastrovascular cavity
3. coelentrates differs from other organism in having
a. skeleton
b. nematocyts
c. polymorphism
d. bilateral symmetry
4. symmetry in the Cnidarians is
a. radial
b. bilateral
c. spherical
d. biradially symmetrical
6. Which of the following does not have a radial symmetry?
a. jellyfish
b. Hydra
c. Sea anaemone
d. all
7. The class of coelentrate which exhibit polymorphism is
a. hydrazoa
b. Scyphozoa
c. Anthozoa
d. All
8. which of the following are radially symmetrical organism?
a. coelenterata
b. echinodermata
c. Both of the above
d. mollusca
9. coelentrata are charaterized by
a. aquatic habit
b. stinging cells
c. intracellular digestion
d. all of the above
10. mesoglea is present in the phylum
a. hydrozoa
b. porifera
c. annelida
d. coelenterate
11. cnidoblast are present in
a. epidermis
b. endodermis
c. both a and b
d. mesoglea
12. Obelia, sea anaemone belongs to the class
a. siphonophorea a. coelentrata
b. hydrozoa b. hydrozoa
c. coelentrarata c. scyphozoa
d. anthozoa d. none
13. In sea anaemone , the symmetry is
a. radiall
b. biradial
c. spherical
d. absent
14. Hydra is
a. fresh water(stagnant water) diploblastic and radially symmetrical
b. marine diploblastic and radially symmetrical
c. freshwater(running water) diploblastic and radially symmetrical
d. marine triploblastic and bilateral
15. True for coelentrata is
a. has nerve cell but no brain
b. has nerve cell as well as brain
c. has polar nerve cell
d. has non polar nerve cell as well as brain
16. Hydra has no special strructure for
a. food capture
b.respiration
c. offense and defence
d. attachement
17. nematocyst of the hydra are important for
a. digestion of food
b.catching and paralyzing the prey
c. testing the quality of the food
d. only locomotion
18. hydra can not digest
a.starch
b.protein
c. fat
d.none
19. tentacles of the hydra helps in
a.locomotion
b. food capture
c. defence
d. all of the above
20.the tentacles of the hydra is
a.solid
b.hollow
c. branched
d.frilled
Note: tentacles are solid in Obelia
21. hydra recognizes its prey by
a. special organs
b. nematocysts
c. chemical stimulus secreted by prey
d. mechanical stimulus of prey
22. the type of asexual reproduction found in the hydra is
a.. budding
b. multiple fission
c. sporulation
d. binary fission
23. coelenteron of the hydra serves the double purpose of thee
a. digestion and circulation
b. excretion and circulation
c. digestion and storage
d. circulation and storage
24. in the bisexual hydra the testes and ovary are located in
a.basal end and distal end
b.distal end and basal end
c. proximal end and distal end
d. none of them
25. the fertilization in the hydra is
a.cross pollination
b.self pollination
c. can be both of them
d.none
26.in the coelentrata the charaterisrics larvae is
a. onchosphere
b.cysticerous
c.planula
d.rhabditiform
27. In an electric field ,the tentacular end of hydra bends towrds
a. anode
b. cathode
c. both
d. none
28. A single hydra bears
a. one ovary and one testes
b. several tstes and one ovary
c. one ovary and several testes
d. several ovaries and one testes
29. largest nematocyst of hydra is
a.volvent
b. penetrant
c.atrichous isohriza
d.holotrious isorhiza
30. sometimes the hydra moves upon its tentacles using them as legs .this is known as
a.looping
b.gliding
c.walking
d. somersaulting