Objective Questions & Answers for APSC Geology Examination

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

View Answer

Answer: non-conformity

17 A limited area of older rocks surrounded by younger rocks is called

1 outlier

2 overlap

3 inlier

4 offlap

View Answer

Answer: inlier

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18 Very closely spaced joints in rocks is known as

1 fracture cleavage

2 shear cleavage

3 strain-slip cleavage

4 crenulation cleavage

View Answer

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

View Answer

Answer: trellis

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

View Answer

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

Answer: Cyprea

22 A well-known gastropod shell having sinistral coiling is

1 Oliva

2 Physa

3 Nerita

4 Conus

View Answer

Answer: Physa

23 Pedicle opening is present in

1 cephalopod shell

2 brachiopod shell

3 gastropod shell

4 bivalved shell

View Answer

Answer: brachiopod shell

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

Answer: Below the beak

25 Orthis is a genus of

1 Cephalopoda

2 Gastropoda

3 Trilobita

4 Brachiopoda

View Answer

Answer: Brachiopoda

26 _____________ surrounds the mouth in Echinoidea.

1 Periproct

2 Madreporite

3 Ambulacrum

4 Peristome

View Answer

Answer: Periproct

27 The toothless form of dentition of Lamellibranchia is known as

1 isodont

2 taxodont

3 schizodont

4 edentulous

View Answer

Answer: edentulous

28 ____________possesses monomyarian type of adductor muscle.

1 Lucina

2 Unio

3 Area

4 Exogyra

View Answer

Answer: Exogyra

29 The bivalvia shells are joined together at the dorsal side by

1 adductor muscle

2 hinge plate

3 ligament

4 delthyrium

View Answer

Answer: ligament

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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