List of practice Questions

Archaeal cell membranes contain lipids that are

Which of the following are producers in an ecological system?

Which of the following acts as wound hormones in plants?

The enriched media used to facilitate the growth of fastidious microorganisms are

Match the bacterial structure to function

(i)	Cell wall	(a)	Virulence factor
(ii)	Glycocalyx	(b)	Selective permeability
		(c)	Attachment to surfaces
		(d)	Protection from osmotic lysis

Identify the correct pairs:
(i) Thermophile            (a) grows optimal at 37 °C
(ii) Mesophile                 (b) grows optimal at low temperature
(iii) Psychrophile             (c) grows optimal at high saline conditions
(iv) Halophile                  (d) grows optimal at 67 °C

A single copy of an allele in sickle-cell heterozygous individuals reduces the frequency and severity of malaria. The reason for this is

The correct statement/s for bimolecular nucleophilic substitution reactions is/are

Which one of the following is a geochronologic unit?

Which one of the following must have thickness less than 1 cm?

Which one of the following organisms became extinct during the Cretaceous- Tertiary mass extinction event?

Match the geomorphic features in Group I with the related processes in Group II.

Group I		Group II
P	Cirque	1	Fluvial
Q	Ventifact	2	Glacial
R	Point bar	3	Volcanic
S	Tephra	4	Aeolian

Which one of the given textural features results from exsolution?

In the holosymmetric class of the Cubic System, how many more faces does the{110} form have compared to the {111 } form?

Which one of the following scismic Waves involves compression and rarefaction (but not rotation) of the material that it passes through?

Realgar and orpiment are both minerals of arsenic (As) and have the same chemical composition. Which one of the following properties can be used to distinguish between the two minerals in hand specimen?

Buckle folds result from

Sandstone beds above a magmatic body are domal in shape, while the beds below arc horizontal. The mae,:matic bod.v is a

Match the geomorphic features in Group I with the related processes in Group II.

Group I		Group II
P	Pedicle Foramen	1	Trilobita
Q	Pallial Sinus	2	Cephalopoda
R	Pygidium	3	Pelecypoda
S	Siphuncle	4	Brachiopoda

The Triassic-Jurassic boundary lies Within which one of the following stratigraphic units?

Which one is the correct order of stability of the minerals (arranged from the most stable to the least stable) during chemical Weathering?

Match the following sedimentary rocks in Group I with their compositions in Group II

Group I		Group II
P	Packstone	1	< I5% matrix, > 25% rock fragments
Q	Cirainstone	2	> 15<½! matrix, >259t feldspar
R	Lithic arenite	3	Grain supported, contains no mud
S	Arkosic wacke	4	Grain supported, contains mud

Match the parameters in Group I with their corresponding dimensions in Group II.

Group I		Group II
P	Shear modulus	1	\(M^\circ L^\circ T^\circ\)
Q	Hydraulic conductivity	2	\(M^1L^{-3}T^\circ\)
R	Volumetric strain	3	\(M^0 L^1 T^{-1}\)
S	Dry density	4	\(M^1 L^{-1} T^{-2}\)

Match the countries in Group I with the plate tectonic features in Group II that cause seismic activity in them.

Group I		Group II
P	Iceland	1	Subduction Zone
Q	Indonesia	2	Transform Fault
R	Nepal	3	Mid-Oceanic Ridge
S	New Zealand	4	Continental Collision

Which one of the magnitude scales given below DOES NOT saturate while estimating size of carthquakes?