(16)
If igneous rocks are unconformably overlain by younger sedimentary rocks, the resulting unconformity is known as
1
disconformity
2
non-conformity
3
angular unconformity
4
offlap
(17)
A limited area of older rocks surrounded by younger rocks is called
1
outlier
2
overlap
3
inlier
4
offlap
(18)
Very closely spaced joints in rocks is known as
1
fracture cleavage
2
shear cleavage
3
strain-slip cleavage
4
crenulation cleavage
Answer: fracture cleavage
(19)
When stream valleys are guided by folds and are parallel to the trend of fold axes, the pattern of drainage is called
1
dendritic
2
radial
3
trellis
4
annular
(20)
In an asymmetrical fold, the axis
1
coincides with the crest of an anticline
2
coincides with the trough of the syncline
3
does not coincide with the crest of an anticline
4
coincides with both the trough and the crest of an anticline
Answer: does not coincide with the crest of an anticline
(21)
Which one of the following is not a microfossil?
1
Radiolaria
2
Diatom
3
Cyprea
4
Coccolithophore
View Answer
(22)
A well-known gastropod shell having sinistral coiling is
1
Oliva
2
Physa
3
Nerita
4
Conus
View Answer
(23)
Pedicle opening is present in
1
cephalopod shell
2
brachiopod shell
3
gastropod shell
4
bivalved shell
View Answer
(24)
Cardinal teeth in Lamellibranchia is situated at which place?
1
Below the beak
2
At the ligament
3
Away from the beak
4
Cardinal teeth were not present
View Answer
(25)
Orthis is a genus of
1
Cephalopoda
2
Gastropoda
3
Trilobita
4
Brachiopoda
View Answer
(26)
_____________ surrounds the mouth in Echinoidea.
1
Periproct
2
Madreporite
3
Ambulacrum
4
Peristome
View Answer
(27)
The toothless form of dentition of Lamellibranchia is known as
1
isodont
2
taxodont
3
schizodont
4
edentulous
View Answer
(28)
____________possesses monomyarian type of adductor muscle.
1
Lucina
2
Unio
3
Area
4
Exogyra
View Answer
(29)
The bivalvia shells are joined together at the dorsal side by
1
adductor muscle
2
hinge plate
3
ligament
4
delthyrium
View Answer
(30)
Which of the following is arranged properly based on the evolution of suture lines in Ammonoidea?
1
Ammonitic, Goniatitic,
Ceratitic
2
Goniatitic, Ceratitic,
Ammonitic
3
Ceratitic, Ammonitic,
Goniatitic
4
Ammonitic, Ceratitic
Goniatitic
View Answer
Answer: Goniatitic, Ceratitic,
Ammonitic
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