Biology Chapter 6 Entry test MCQs
26. Body of porifera is tubular which is opened at its anterior end called:
a. Sponogocoel
b. Culum
c. Ostia
d. Osculum
27. All are the uses of sponges except:
a. In surgical operations
b. Washing and bathing
c. To absorb sound waves
d. Air pollution indicator
28. Asexual reproduction is more common in cnidarians. It is performed by:
a. Rarely by fragmentation.
b. Budding
c. Regeneration
d. All of these
29. The existence of a single species in more than two morphological forms (individual types) is termed as:
a. Polymorphism
b. Mutagenesis
c. Unicellular organism
d. Metagenisis
30. ——– develops gonads in which egg or sperms are formed.
a. Gastrozooids
b. Polyps
c. Blastostyle
d. Medusae
31. It is not the importance of coral reef:
a. Provide breeding habitat for fishes
b. Provide ecosystem to marine life
c. Used as sound absorber
d. Used as ornaments
32. The animals in grade bilateria and triploblastic are all except:
a. Arthropoda, and chordate
b. Platyhelminthes, nematode
c. Cnidaria
d. Annelida, mollusca
33. Gastrovascular cavity of coelenterates perform following function:
a. Excretion
b. Digestion
c. Respiration
d. All of these
34. The nematocysts are the organs of defense in———–
a. Annelida
b. Coelenterata
c. Tracheophytes
d. Echinodermata
35. It is not true for Phylum Platyhelminthes:
a. Dorsoventrally compressed body
b. Bilaterally symmetrical
c. Radially symmetrical body
d. Triploblastic metazoan
36. The body of Aschelminthes is covered by a hard layer of:
a. Cilia
b. Chitin
c. Spongin
d. Cuticle
37. ———–is a human parasite commonly known as pinworm.
a. Enterobius vermicularis
b. Fasciola hepatica
c. Aurelia aurita
d. Taenia solium
38. The nervous system in Aschelminthes consists of a nerve ring which encircles the:
a. Larynx
b. Mouth
c. Anus
d. Pharynx
39. Molluscs are soft bodied, triploblastic animals, most of them are protected by a shell of calcium carbonate secreted by:
a. Mesoderm
b. Mantle
c. Ectoderm
d. Ectoderm
40. The internal opening of nephridia is called:
a. Metanephridia
b. Nephridiopore
c. Nephropore
d. Nephrostome
41. Locomotary organs are———–in earthworm and———–in Neries respectively.
a. Setae
b. Setae, parapodia
c. Setae, chaetae
d. Parapodia, setae
42. The most successful group and the largest phylum of the animals:
a. Phylum Annelida
b. Phylum Mollusca
c. Phylum Arthropoda
d. Phylum Porifera
43. Natural silk is not:
a. Obtained from an insect
b. A protein
c. Glycolipid in nature
d. Produced by modified salivary glands
44. Scavenger insects may eat:
a. Dead plant matter only
b. Dead matter present on organism
c. Living animals only
d. Dead animals and plants
45. Members of this phylum are exclusively marine:
a. Mollusca
b. Porifera
c. Echinodermata
d. Cnidaria
46. The organ of locomotion in echinoderms are:
a. Parapodia
b. Muscle Feet
c. Tube feet
d. Jet propulsion
47. Water enters the water vascular system through:
a. Ostia
b. Radial canal
c. Madreporite
d. Ampulla
48. Fate of the blastomeres is foretold in:
a. Arthropods
b. Echinoderms
c. Chordates
d. Hemichordates
49. Which one of the following is the primary host of liver fluke?
a. Sheep
b. Man
c. Dog
d. Snail
50. Which one of the following is an example of a free-living carnivorous flatworm?
a. Dugesia
b. Liver fluke
c. Schistosoma
d. Tapeworm