26. Name the second largest phylum of animal kingdom.
Answer : Mollusca
27. What is the name of central cavity found in the body of members of phylum porifera?
Answer : Spongocoel
28. Acavity in which mesoderm is found in scattered form is called as:
Answer : Pseudocoelom
29. Name the organism which produces silk?
Answer : Bombyx
30. Water vascular system is a characteristic of which phylum?
Answer : Echinodermata
31. Which class of vertebrates possesses dry and cornified skin with epidermal scales or scutes?
Answer : Reptilia
32. Name the cell that is used for defense purposes in coelenterates.
Answer : Cnidoblast
33. What is the main function of malpighian tubules?
Answer : Excretion
34. Name a fish which has electric organ.
Answer : Torpedo
35. In which phylum organisms alter their symmetry from bilateral to radial during the development?
Answer : Echinodermata
36. The undifferentiated layer present between ectoderm and mesoderm in diploblastic animals is known as:
Answer : Mesoglea
37. Name the cap which covers the gills in fishes:
Answer : Operculum
38. In which class of fishes mouth is located ventrally?
Answer : Chondrichthyes
39. Which structures help in osmo regulation and excretion in Annelids?
Answer : Nephridia
40. In which subphylum notochord extends from head to tail and persistent throughout the life?
Answer : Cephalochordata
41. The alternation of Polyp and Medusa forms in coelenterates is called as
Answer : Metagenesis
42. Members of which phylum have ventral mouth and dorsal anus?
Answer : Echinodermata
43. Members of which phylum are also known as roundworms?
Answer : Aschelminthes
44. Members ofwhich phylum are commonly known as sea walnuts or comb jellies?
Answer : Ctenophora
45. Which types of scales are foundon the body of cartilagenous fishes?
Answer : Placoid scales
46. The property of a living organism to emit light is called as:
Answer : Bioluminescence
47. Presence of water transport system is characteristic of which phylum?
Answer : Porifera
48. What is the name of structure that prevents the bony fishes from sinking?
Answer : Air bladder
49. The soft and spongy layer of skin overthe visceral hump of molluscs is known as:
Answer : Mantle
50. Snakes and lizards shed off their scales often.This phenomenonis called as:
Answer : Skin cast
Answer : Mollusca
27. What is the name of central cavity found in the body of members of phylum porifera?
Answer : Spongocoel
28. Acavity in which mesoderm is found in scattered form is called as:
Answer : Pseudocoelom
29. Name the organism which produces silk?
Answer : Bombyx
30. Water vascular system is a characteristic of which phylum?
Answer : Echinodermata
31. Which class of vertebrates possesses dry and cornified skin with epidermal scales or scutes?
Answer : Reptilia
32. Name the cell that is used for defense purposes in coelenterates.
Answer : Cnidoblast
33. What is the main function of malpighian tubules?
Answer : Excretion
34. Name a fish which has electric organ.
Answer : Torpedo
35. In which phylum organisms alter their symmetry from bilateral to radial during the development?
Answer : Echinodermata
36. The undifferentiated layer present between ectoderm and mesoderm in diploblastic animals is known as:
Answer : Mesoglea
37. Name the cap which covers the gills in fishes:
Answer : Operculum
38. In which class of fishes mouth is located ventrally?
Answer : Chondrichthyes
39. Which structures help in osmo regulation and excretion in Annelids?
Answer : Nephridia
40. In which subphylum notochord extends from head to tail and persistent throughout the life?
Answer : Cephalochordata
41. The alternation of Polyp and Medusa forms in coelenterates is called as
Answer : Metagenesis
42. Members of which phylum have ventral mouth and dorsal anus?
Answer : Echinodermata
43. Members of which phylum are also known as roundworms?
Answer : Aschelminthes
44. Members ofwhich phylum are commonly known as sea walnuts or comb jellies?
Answer : Ctenophora
45. Which types of scales are foundon the body of cartilagenous fishes?
Answer : Placoid scales
46. The property of a living organism to emit light is called as:
Answer : Bioluminescence
47. Presence of water transport system is characteristic of which phylum?
Answer : Porifera
48. What is the name of structure that prevents the bony fishes from sinking?
Answer : Air bladder
49. The soft and spongy layer of skin overthe visceral hump of molluscs is known as:
Answer : Mantle
50. Snakes and lizards shed off their scales often.This phenomenonis called as:
Answer : Skin cast