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Biology

As we go lower from kingdom to species, the number of common characters at each taxon:
1. Goes on decreasing
2. Goes on increasing
3. Remains same
4. There is no pattern to this

In which one of the following, the genus name, its two characters and its phylum are not correctly matched, whereas the remining three are correct?

Genus Name	Two characters	Phylum
1.Pila	(i) Body segmented (ii) Mouth with Radula	Mollusca
2.Asterias	(i) Spinyskinned (ii) Watervascularsystem	Echinodermata
3.Sycon	(i) Pore bearing (ii) Canalsystem	Porifera
4. Periplaneta	(i) Jointed appendages (ii) Chitinous exoskeleton	Arthropoda

Select the correct sequence for hom*o erectus.
1. erectus → hom*o → Primata → Chordata → Animalia
2. hom*o → erectus → Primata → Animalia → Chordata
3. hom*o → erectus → Primata → Chordata → Animalia
4. erectus → hom*o → Animalia → Primata → Chordata

The largest and the second largest phylum of the animal kingdom are
(1) Arthropoda and Echinodermata
(2) Echinodermata and Mollusca
(3) Mollusca and vertebrata
(4) Arthropoda and Mollusca

In which of these examples are the members exclusively chondrichthyes
(1) Scoliodon, Pristis, Labeo, Betta
(2) Scoliodon, Pristis, Betta, Trygon
(3) Scoliodon, Trygon, Pristis, Carcharodon
(4) Scoliodon, labeo, Carcharodon, Pristis

Nomenclature is
a. assigning a single name to an organism valid all over the world.
b. Defining properties of an organism
c. Localizing the area of abundance for that organism
d. Assigning three sets of name applicable at different levels of classification.

What is prerequisite for nomenclature?

1.	Description of organism
2.	Knowledge of which organism is considered for a particular name
3.	Identification
4.	All are correct

Taxonomic groups or categories are not
1. Distinct Biological entities
2. Morphological aggregates
3. Part of overall taxonomic arrangement
4. Rank denoting entities

Sapindales is which taxon?
a. Order
b. Class
c. Genus
d. Species

10.

Taxonomic studies are not useful in
a. Agriculture
b. Industry
c. Knowing our bio-resources and their biodiversity
d. Measuring field capacity

11.

Which of the following statements about classification is not true?
(i)Members of a family are less similar than members of an included genus.
(ii)An order has more members than the number of members in an included genus.
(iii) Families have more members than phyla.
(iv)Members of a family share a common ancestor in the more distant past than members of an included genus.
(v) The number of species in a taxon depends on their relative degree of similarity.
1. Only (iii)
2. Only (iv)
3. Only (v)
4. None of these

See Also

Botany Full length Test

12.

Which of the given option is correct regarding the statements?

Statement I:	Cephalochordata bears notochord all along the body throughout life.
Statements II:	Urochordate bears vertebral column only in tail region throughout the life.

1. I wrong, II correct
2. I correct, II wrong
3. Both I and II are wrong
4. Both are correct

13.

Match the following entities of column I with their respective orders of column II and choose the correct combination from the option.

1. A-4 B-3 C-2 D-1
2. A-1 B-2 C-4 D-3
3. A-3 B-4 C-2 D-1
4. A-2 B-4 C-1 D-3

14.

Which of the following is true about the given organism?

1.It is a medusa form of Aurelia
2.It is Fresh water sponge
3.Central canal system is present in it
4.It’s mouth is formed first

15.

Which of the following helps in excretion and osmoregulation in Flatworms
1.Flame cells
2.Nephridia
3.Malphigian tubules
4.Green glands

16.

Which of the following is a gregarious pest?
1.Limulus
2.Locust
3.Laccifer
4.Palaemon

17.

Which of the following is not true for Earthworms?
1. Closed Circulatory
2. Hermaphrodite
3. Respire through Moist skin
4. Cross fertilisation is absent

18.

Match the following genera with their respective phylum :

	Column I		Column II
(a)	Ophiura	(i)	Mollusca
(b)	Physalia	(ii)	Platyhelminthes
(c)	Pinctada	(iii)	Echinodermata
(d)	Planaria	(iv)	Coelenterata

Select the correct option :

Options:	(a)	(b)	(c)	(d)
1.	iv	i	iii	ii
2.	iii	iv	i	ii
3.	i	iii	iv	ii
4.	iii	iv	ii	i

19.

Four chambered heart, hom*oiothermous, monocondylic skull, internal fertilization are feature associated with
1. Amphibia (salamander)
2. Reptilia (calotes)
3. Aves (psittacula)
4. Mammalia (canis)

20.

Which of the following feature can't be associated with phylum ctenophora (sea walnut)?
1. Exclusively marine, radially symmetrical
2. Shows bioluminescence (the property of a living organism to emit light)
3. Body bears eight external rows of ciliary comb plates which help in locomotion
4. Reproduction takes place both by asexual and sexual means

21.

Identify the organisms given below and mark the incorrect statement regarding them

1. A - Water vascular system for locomotion
2. B - Show retrogressive metamorphosis
3. C - Notochord present only in tail of larva
4. B - Migrate from sea to fresh water for spawning

22.

A mantle is
1. Present only in bivalves
2. A structure that acts as a lung or contains gills
3. A rasping tongue-like organ in Mollusca
4. Necessary for the molluscs to be motile

23.

Mark wrong set of comparison between chordates and non-chordates

Chordates	Non-chordates
1. Notochord present	Notochord absent
2. CNS is dorsal hollow and single	CNS is ventral, solid and double
3. Gill slits present	Gill slits absent
4. Heart is dorsal	Heart is ventral

24.

The correctly written binomial epithet of Mango is
1. Mangifera indica linn
2. Mangifera indica Linn.
3. Mangifera Indica L
4. Mangifera indica L

25. The branch of biology that deals with the relationships of different groups of organisms and examines their natural variation and relationships is known as:

1.	Cladistics	2.	Systematics
3.	Taxonomy	4.	Identification

26.
Given below are two statements:

Assertion(A):	There is a need to standardise the naming of living organisms such that a particular organisms such that a particular organism is known by the same name all over the world
Reason(R):	Local names vary from place to place which create confusion

1.	Both(A)and(R)are true and(R)is the correct explanation of(A).
2.	Both(A)and(R)are true but(R)is not the correct explanation of(A).
3.	(A)is true but(R)is false.
4.	Both(A)and(R)are false.

27. Regarding taxonomy and systematics which one is exclusive to systematics?
1. Internal structure
2. Development process
3. Evolutionary relationships between organisms
4. Ecological information of organisms

28. Different species of a genus
1. Are vary different from each other in their basic properties
2. Have morphological similarities
3. Can be placed in different families
4. Cannot be differentiated on the basis of their morphological features

29. Between which of the following taxa, there is greater difficulty of determining relationship?
1. Mangifera and Triticum
2. Dicotyledonae and Monocotyledonae
3. Sapindales and Poales
4. Convolvulaceae and Solanaceae

30. All of the following are poikilothermous animals except
1. Labeo
2. Hyla
3. Struthio
4. Alligator

Physics

31.

A particle moves in a force field given by $\vec{F} = \hat{r} F (r)$ , where r is the unit vector along with the position vector $\vec{r}$ , then which is true?
1. The torque acting on the particle is not zero
2. The torque acting on the particle produces an angular acceleration in it
3. The angular momentum of the particle is conserved
4. The angular momentum of the particle increases.

32.

A battery has e.m.f. 4 V and internal resistance r. When this battery is connected to an external resistance of 2 ohm, a current of 1 ampere flows in the circuit. How much current will flow if the terminals of the battery are connected directly?

1.	1 A	2.	2 A
3.	4 A	4.	Infinite

33.

While measuring the acceleration due to gravity by a simple pendulum, a student makes a positive error of 1% in the length of the pendulum and a negative error of 3% in the value of time period. His percentage error in the measurement of g by the relation $g = 4 π^{2} (l / T^{2})$ will be
(1) 2%
(2) 4%
(3) 7%
(4) 10%

34.

The value of g on the earth's surface is 980 cm/ $s e c^{2}$ . Its value at a height of 64 km from
the earth's surface is
1. $960.40 c m / s e c^{2}$
2. $984.90 c m / s e c^{2}$
3. $982.45 c m / s e c^{2}$
4. 980.45 cm/ $s e c^{2}$
(Radius of the earth R = 6400 kilometers)

35.

Which of the following combinations should be selected for better tuning of an L-C-R circuit used for communication?
(a) $R = 20 Ω, L = 1.5 H, C = 35 μ F$
(b) $R = 25 Ω, L = 2.5 H, C = 45 μ F$
(c) $R = 15 Ω, L = 3.5 H, C = 30 μ F$
(d) $R = 25 Ω, L = 1.5 H, C = 45 μ F$

36.

Two non-mixing liquids of densities $ρ$ and n $ρ$ (n>1) are put in a container. The height of each liquid is h. A solid cylinder floats with its axis vertical and length pL $(p < 1)$ in the denser liquid. The density of the cylinder is d.The density d is equal to:
1. {2+(n+1)p} $ρ$
2. {2+(n-1)p} $ρ$
3. {1+(n-1)p} $ρ$
4. {1+(n+1)p} $ρ$

37.

A photoelectric surface is illuminated successively by monochromatic light of wavelengths λ and λ/2.If the maximum kinetic energy of the emitted photoelectrons in the second case is 3 times that in the first case, the work function of the surface of the material will be:
(h = Planck’s constant, c = speed of light)
1. hc/2λ
2. hc/λ
3. 2hc/λ
4. hc/3λ

38.

A beam of cathode rays is subjected to crossed Electric (E) and magnetic fields(B). The fields are adjusted such that the beam is not deflected. The specific charge of the cathode rays is given by:
1. $\frac{B^{2}}{2 V E^{2}}$
2. $\frac{2 V B^{2}}{E^{2}}$
3. $\frac{2 V E^{2}}{B^{2}}$
4. $\frac{E^{2}}{2 V B^{2}}$
(where V is the potential difference between cathode and anode)

39.

If the velocity of sound in air is 350 m/s. Then the fundamental frequency of an open organ pipe of length 50 cm, will be
(1) 350 Hz
(2) 175 Hz
(3) 900 Hz
(4) 750 Hz

40.

Which one of the following is correct for one complete cycle of a thermodynamic process on a gas as shown in the $(P-V)$ diagram?

1.	$\Delta E_{int}= 0, Q<0$	2.	$\Delta E_{int}= 0, Q>0$
3.	$\Delta E_{int}>0, Q<0$	4.	$\Delta E_{int}< 0, Q>0$

41.

The molecules of an ideal gas at a certain temperature have
1. Only potential energy
2. Only kinetic energy
3. Potential and kinetic energy both
4. None of the above

42.

Vector $\vec{A}$ is of length 2 cm and is 60 $°$ above the x-axis in the first quadrant. Vector $\vec{B}$ is of length 2 cm and 60 $°$ below the x-axis in the fourth quadrant. The sum $\vec{A}$ + $\vec{B}$ is a vector of magnitude -
(A) 2 along + y-axis
(B) 2 along + x-axis
(C) 1 along - x-axis
(D) 2 along - x-axis

43.

The function $\sin^{2} (ωt)$ represents
1. A simple harmonic motion with a period $2 π / ω$
2. A simple harmonic motion with a period $π / ω$
3. A periodic but not simple harmonic motion with period $2 π / ω$
4. A periodic but not simple harmonic motion with a period $π / ω$

44.

Zener breakdown will occur if:
1. impurity level is low.
2. impurity level is high.
3. impurity is less on the n-side.
4. impurity is less on the p-side.

45.

The length of a wire is 2.01 m when 5 kg is hangingfrom it and 2.02 m when 10 kg is hanging, then the natural length of wire is:
(1) 2 m
(2) 1.95 m
(3) 1.9 m
(4) 2.005 m

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1.	\(\Delta E_{int}= 0, Q<0\)	2.	\(\Delta E_{int}= 0, Q>0\)
3.	\(\Delta E_{int}>0, Q<0\)	4.	\(\Delta E_{int}< 0, Q>0\)

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References