11th class (FSc) Biology Unit 10 MCQs
51. Flame cells are excretory cells in:
a. Round worms
b. Flat worms
c. Insects
d. Segmented worms
52. The presence of notochord is the character of;
a. Nematoda
b. Arthropoda
c. Chordate
d. Mollusca
53. Most spiders have eyes:
a. 6
b. 2
c. 8
d. 4
54. Balanoglossus and Saccoglossus are common examples of:
a. Mollusca
b. Hemichordata
c. Annelida
d. Echinodermata
55. Aquatic arthropods respire through:
a. Gills
b. Lungs
c. Spiracles
d. Skin
56. It is usually accepted by the biologists that mammals have evolved from reptilian ancestors called as:
a. Cyclostome
b. Cotylosaurs
c. Amphibians
d. Dinosaurs
57. The larva found in echinoderms is:
a. Bipinnaria
b. Trochophore
c. Planaria
d. Veliger
58. Number of legs in arachnids is:
a. 6
b. 2
c. 8
d. 4
59. The animal with exceptionally large brain is:
a. Snail
b. Star fish
c. Sepia
d. Octopus
60. The cartilaginous fishes contain scales:
a. Ganoid
b. Placoid
c. Ctenoid
d. Cycloid
61. Which is the sequence of bones in the mammalian ears:
a. Stapes and malleus
b. Malleus, incus and stapes
c. Malleus and stapes
d. Incus and stapes
62. In birds, the organs of voice is called:
a. Vocal cord
b. Larynx
c. Voice box
d. Syrinx
63. Primary host of tape worm is:
a. Sheep
b. Man
c. Snail
d. Cattle
64. The second largest phylum of invertebrates is:
a. Echinodermata
b. Annelida
c. Platyhelminthes
d. Mollusca
65. Kangroo belongs to sub-class:
a. Eutheria
b. Matatheria
c. Reptilian
d. Prototheria
66. The excretory system of flatworms is composed of:
a. Flame cells
b. Nephron
c. Ganglia
d. Nephridia
67. Common name for Ancylostoma dudenal is:
a. Earth worm
b. Pin worm
c. Hook worm
d. Tape worm
68. Ancylostoma duodenal is biological name of:
a. Round worm
b. Flat worm
c. Fluke
d. Hook worm
69. Round worms are:
a. Radial
b. Acoelomates
c. None of these
d. Bilateral
70. The animals which are on the border line between aquatic and true terrestrial animals belong to:
a. Amphibian
b. Reptilian
c. Aves
d. Mammalia
71. Dolphin is:
a. Amphibian
b. Fish
c. Mammal
d. Bird
72. The color of the blood of Molluscans is:
a. Green
b. Red
c. Blue
d. White
73. Blastocoel persists throughout the life in:
a. Annelida
b. Porifera
c. Nematode
d. Cnidaria
74. Which one of the following is not a sub phylum of chordate?
a. Cephalochordate
b. Urochordata
c. Vertebrate
d. Hemichordate
75. A free swimming trocheophore larva is produced during life cycle of:
a. Annelida
b. Coelenterate
c. Arthopoda
d. Porifera