CBSE
Multiple Choice QuestionsThe parasphenoid bone in frog forms :
base of cranium
floor of cranium
dorsal side of cranium
dorsolateral side of cranium
Which of the following structure in Pheretima posthuma plays the role of the liver of vertebrates ?
Calciferous glands
Gland cells
Chloragogen cells
Cliteller cells
In a vertebrate which germ layer forms the skeleton muscles ?
Ectoderm
Endoderm
Mesoderm
Both 'a' and 'c'
The peculiar pungent smell of cockroach is produced by the secretions of :
pheromones
flame cells
abdominal glands
cervical glands
Excretion in cockroach takes place by
nephridium
parotid gland
coxal glands
malpighian tubules
The function of pineal body is to :
lighten the skin colours
control sexual behaviour
regulates the period of puberty
all of the above
Debove's membrane is a layer of :
muscular tissue
epithelial tissue
connective tissue
all of the above
Number of cranial nerves in frog :
10 pairs
9 pairs
12 pairs
none of the above
Chloragogen cells of earthworms are analogous to vertebrate :
lungs
liver
gut
kidneys
Striped muscles are characterised by
syncytial
spindle shape
uninucleate
none of the above
