14620 + Mcqs in Biology McqOptions

1.	What is the final pathway followed by all carbon atoms derived from carbohydrates, lipids and proteins when they are oxidised during respiration?
A.	The Calvin cycle
B.	The Electron transport system
C.	The Kreb?s cycle
D.	The Ornithine cycle
Answer» D. The Ornithine cycle

Discussion

2.	What is degraded by Peroxisomes [RPMT 1997]
A.	Carbon dioxide
B.	Hydrogen peroxide
C.	Litheum oxide
D.	Carbon monoxide
Answer» C. Litheum oxide

Discussion

3.	\[2({{C}_{51}}{{H}_{98}}{{O}_{6}})+145{{O}_{2}}\to 100C{{O}_{2}}+98{{H}_{2}}O+Energy\]The R.Q. of above reaction is:
A.	1
B.	0.7
C.	1.45
D.	1.62
Answer» C. 1.45

Discussion

4.	Seventh cranial nerve enters:
A.	Jugular ganglion
B.	Geniculate ganglion
C.	Gasserian ganglion
D.	Femoral ganglion
Answer» C. Gasserian ganglion

Discussion

5.	Read the assertion and reason carefully: Assertion : Xerophytic leaves may contain stomatal crypts or sunken stomata. Reason : Spongy parenchyma is more in xerophytic leaves.
A.	If both the assertion and the reason are true and the reason is a correct explanation of the assertion
B.	If both the assertion and reason are true but the reason is not a correct explanation of the assertion
C.	If the assertion is true but the reason is false
D.	If both the assertion and reason are false
E.	If the assertion is false but reason is true
Answer» D. If both the assertion and reason are false

Discussion

6.	Read the assertion and reason carefully: Assertion : Coconut tree is distributed in coastal areas over a large part of the world. Reason : Coconut fruit can float and get dispersed over thousands of kilometers before losing viability. [AIIMS 2004]
A.	If both the assertion and the reason are true and the reason is a correct explanation of the assertion
B.	If both the assertion and reason are true but the reason is not a correct explanation of the assertion
C.	If the assertion is true but the reason is false
D.	If both the assertion and reason are false
E.	If the assertion is false but reason is true
Answer» C. If the assertion is true but the reason is false

Discussion

7.	Read the assertion and reason carefully to mark the correct option out of the options given below: Assertion : Tobacco is a local irritant. Reason : It does not show stimulant behaviour.
A.	If both assertion and reason are true and the reason is the correct explanation of the assertion.
B.	If both assertion and reason are true but reason is not the correct explanation of the assertion.
C.	If assertion is true but reason is false.
D.	If the assertion and reason both are false.
E.	If assertion is false but reason is true.
Answer» D. If the assertion and reason both are false.

Discussion

8.	Assertion : The female cones are same in number as male cones. Reason : Male and female cones appears alternately on the same branch of the Pinus.
A.	If both the assertion and the reason are true and the reason is a correct explanation of the assertion
B.	If both the assertion and reason are true but the reason is not a correct explanation of the assertion
C.	If the assertion is true but the reason is false
D.	If both the assertion and reason are false
E.	If the assertion is false but reason is true
Answer» E. If the assertion is false but reason is true

Discussion

9.	Sexual reproduction in Spirogyra can be described as [CPMT 1987; MP PMT 2001]
A.	Morphological anisogamy and physiological isogamy
B.	Morphological as well as physiological isogamy
C.	Morphological as well as physiological anisogamy
D.	Morphological isogamy and physiological anisogamy
Answer» E.

Discussion

10.	One of the genes present exclusively on the X-chromosome in humans is concerned with [AIIMS 2003]
A.	Baldness
B.	Red-green colour blindness
C.	Facial hair/moustaches in males
D.	Night blindness
Answer» C. Facial hair/moustaches in males

Discussion

11.	Read the assertion and reason carefully: Assertion : Most common type of ovule is anatropous. Reason : Anatropous ovule is horse ? shoe shaped.
A.	If both the assertion and the reason are true and the reason is a correct explanation of the assertion
B.	If both the assertion and reason are true but the reason is not a correct explanation of the assertion
C.	If the assertion is true but the reason is false
D.	If both the assertion and reason are false
E.	If the assertion is false but reason is true
Answer» D. If both the assertion and reason are false

Discussion

12.	The interspersion of various degrees of chlorosis with the normal green colour of the leaf is called
A.	Spotting
B.	Yellowing
C.	Mosaic
D.	Rosetting
Answer» D. Rosetting

Discussion

13.	A duplicate of nomenclature type is termed by a taxonomist as:
A.	Syntype
B.	Neotype
C.	Paratype
D.	Isotype
Answer» E.

Discussion

14.	Lignified cells are stained by
A.	Saffranine
B.	Methyl blue
C.	Acetocarmine
D.	Light green
Answer» B. Methyl blue

Discussion

15.	Cartilage is made up of [Pb. PMT 2000]
A.	Collagen
B.	Dermin
C.	Matrigen
D.	None of these
Answer» B. Dermin

Discussion

16.	Most studies on human genetics have been made through [MP PMT 1990]
A.	Genetic engineering
B.	Eugenics
C.	Microscopic study of chromosomes
D.	Pedigree charts
Answer» E.

Discussion

17.	Sex-linked characters are[DPMT 1985; CPMT 1980, 86, 93]
A.	Dominant
B.	Recessive
C.	Lethal
D.	Not inherited
Answer» C. Lethal

Discussion

18.	Permafrost is the most distinctive feature of:
A.	Taiga
B.	Temperate grasslands
C.	Tundra
D.	Pacific northwest
Answer» D. Pacific northwest

Discussion

19.	Assertion : Angiosperms are most recent plants. Reason : Angiosperms lack archegonia.
A.	If both the assertion and the reason are true and the reason is a correct explanation of the assertion
B.	If both the assertion and reason are true but the reason is not a correct explanation of the assertion
C.	If the assertion is true but the reason is false
D.	If both the assertion and reason are false
E.	If the assertion is false but reason is true
Answer» C. If the assertion is true but the reason is false

Discussion

20.	Most important character of Brassica campesteris is [AFMC 1992; APMEE 1995; RPMT 2002]
A.	False septum
B.	Parietal placentation
C.	Ebracteate
D.	Imbricate aestivation
Answer» C. Ebracteate

Discussion

21.	Oldest cultivated organism yeasts was discovered by
A.	Aristotle
B.	Linnaeus
C.	Leeuwenhoeck
D.	Theophrastus
Answer» D. Theophrastus

Discussion

22.	Sieve tubes have [BHU 1991]
A.	Apical and oblique septa
B.	Perforated and longitudinal septa
C.	Perforated and oblique septa
D.	Simple oblique wall
Answer» D. Simple oblique wall

Discussion

23.	The process of formation of blood corpuscles is called [AFMC 2005]
A.	Haemopoiesis
B.	Heamolysis
C.	Heamozoin
D.	None of these
Answer» B. Heamolysis

Discussion

24.	Erythrocyte maturing factor is: (AMU 2005)
A.	folic acid
B.	vitamin C
C.	vitamin\[{{B}_{2}}\]
D.	Cyanocobalamin
Answer» E.

Discussion

25.	Classification based on sequencing of DNA and chemical nature of protein is:
A.	Chemotaxonomy
B.	Cytotaxonomy
C.	Adansonian taxonomy
D.	Karyotaxonomy
Answer» B. Cytotaxonomy

Discussion

26.	Which of the following plants have a watery latex
A.	Papaya
B.	Plantain
C.	Opium
D.	Ficus
Answer» C. Opium

Discussion

27.	Assertion : Ribosomes came to our knowledge after the discovery of electron microscope. Reason : Electron microscope has a high magnification and resolving power.
A.	If both the assertion and the reason are true and the reason is a correct explanation of the assertion
B.	If both the assertion and reason are true but the reason is not a correct explanation of the assertion
C.	If the assertion is true but the reason is false
D.	If both the assertion and reason are false
E.	If the assertion is false but reason is true
Answer» B. If both the assertion and reason are true but the reason is not a correct explanation of the assertion

Discussion

28.	The plant body constituting a holdfast, stipe and frond are seen in:
A.	Volvox
B.	Chara
C.	Laminaria
D.	Chlamydomonas
Answer» D. Chlamydomonas

Discussion

29.	Radial vascular bundle can be seen in [CPMT 1996; MP PMT 2005]
A.	Leaf
B.	Dicot root
C.	Stem
D.	Flower
Answer» C. Stem

Discussion

30.	Indian species of Spirogyra in which Prof. Iyengar discovered direct lateral conjugation is
A.	Spirogyra sahnii
B.	Spirogyra indica
C.	Spirogyra jogensis
D.	Spirogyra karnalae
Answer» D. Spirogyra karnalae

Discussion

31.	Modified stem present in Gladiolus is [Orissa JEE 2004]
A.	Bulb
B.	Rhizome
C.	Corm
D.	Bulbil
Answer» D. Bulbil

Discussion

32.	Assertion : Cro-magnon man has more intelligence than the man of present time. Reason : He is regarded as most recent ancestor of today's man.
A.	If both the assertion and the reason are true and the reason is a correct explanation of the assertion
B.	If both the assertion and reason are true but the reason is not a correct explanation of the assertion
C.	If the assertion is true but the reason is false
D.	If both the assertion and reason are false
E.	If the assertion is false but reason is true
Answer» C. If the assertion is true but the reason is false

Discussion

33.	Thorns, spines and prickles are
A.	Organs of defence
B.	Organs of offence
C.	Organs of clinging
D.	Specialised for gaseous exchange
Answer» B. Organs of offence

Discussion

34.	Cyanocobalamin is essential for the maturation of: (JIPMER 2002)
A.	RBCs
B.	Lymph
C.	WBCs
D.	Platelets
Answer» B. Lymph

Discussion

35.	Synthesis of Vitamin A in the body takes place in:
A.	liver
B.	blood
C.	retina
D.	pancreas
Answer» B. blood

Discussion

36.	Leaves fall from the branches on account of [DPMT 1991]
A.	Completing their duration of life
B.	Formation of abscission layer external to cork
C.	Shortening of day time
D.	Fall in atmospheric temperature
Answer» C. Shortening of day time

Discussion

37.	When the count of W.B.C. falls below the optimum number in blood, it is called [Orissa JEE 2005]
A.	Leukopenia
B.	Leukemia
C.	Anaemia
D.	All of the above
Answer» B. Leukemia

Discussion

38.	Rainfall is absent but precipitation occurs in:
A.	Arctic desert
B.	Tropical desert
C.	Chaparral
D.	Savannah
Answer» B. Tropical desert

Discussion

39.	Assertion : Zygospore of Ulothrix forms meiozoospores and meioaplanospores. Reason : Both are motile.
A.	If both the assertion and the reason are true and the reason is a correct explanation of the assertion
B.	If both the assertion and reason are true but the reason is not a correct explanation of the assertion
C.	If the assertion is true but the reason is false
D.	If both the assertion and reason are false
E.	If the assertion is false but reason is true
Answer» D. If both the assertion and reason are false

Discussion

40.	PGA as the first \[C{{O}_{2}}\] fixation product was discovered in photosynthesis of:
A.	Bryophyte
B.	Gymnosperm
C.	Angiosperm
D.	Alga
Answer» E.

Discussion

41.	Function of suspensor of embryo is:
A.	Absorption of nourishment.
B.	Push the embryo into nutritive endosperm region.
C.	Formation of secondary embryos.
D.	All of the above
Answer» C. Formation of secondary embryos.

Discussion

42.	Determination of sex of a child depends upon [CPMT 1980]
A.	Nature of sperm
B.	Nature of egg
C.	Health of father
D.	Age of mother
Answer» B. Nature of egg

Discussion

43.	Actinostele is a modification of
A.	Siphonostele
B.	Dictyostele
C.	Protostele
D.	Solenostele
Answer» D. Solenostele

Discussion

44.	Loranthus is a [DPMT 1987]
A.	Total stem parasite
B.	Partial stem parasite
C.	Total root parasite
D.	Partial root parasite
Answer» C. Total root parasite

Discussion

45.	A negative effect of transpiration is:
A.	Development of water stress.
B.	Increase in mineral absorption.
C.	Maintenance of leaf temperature.
D.	Causing cooling.
Answer» B. Increase in mineral absorption.

Discussion

46.	Which of the following element is a component of ferredoxin?
A.	Copper
B.	Manganese
C.	Zinc
D.	Iron
Answer» E.

Discussion

47.	Savannahs are:
A.	Tropical rain forests
B.	Desert scrubs
C.	Grassland with scattered trees
D.	Dense forests with closed canopy
Answer» D. Dense forests with closed canopy

Discussion

48.	Which is employed for artificial ripening of banana fruits?
A.	Auxin
B.	Coumarin
C.	Ethylene
D.	Cytokinin
Answer» D. Cytokinin

Discussion

49.	What is a clone?
A.	A heterozygote produced by sexual means.
B.	A homozygote produced by asexual means.
C.	A heterozygote produced by asexual means.
D.	A homozygote produced by sexual means.
Answer» C. A heterozygote produced by asexual means.

Discussion

50.	Doctor's son [CPMT 1972]
A.	Will always be a doctor
B.	Will never be a doctor
C.	Can be a doctor
D.	Will not be a doctor at all
Answer» D. Will not be a doctor at all

Discussion

Explore topic-wise MCQs in Testing Subject.

What is the final pathway followed by all carbon atoms derived from carbohydrates, lipids and proteins when they are oxidised during respiration?

What is degraded by Peroxisomes [RPMT 1997]

\[2({{C}_{51}}{{H}_{98}}{{O}_{6}})+145{{O}_{2}}\to 100C{{O}_{2}}+98{{H}_{2}}O+Energy\]The R.Q. of above reaction is:

Seventh cranial nerve enters:

Read the assertion and reason carefully: Assertion : Xerophytic leaves may contain stomatal crypts or sunken stomata. Reason : Spongy parenchyma is more in xerophytic leaves.

Read the assertion and reason carefully: Assertion : Coconut tree is distributed in coastal areas over a large part of the world. Reason : Coconut fruit can float and get dispersed over thousands of kilometers before losing viability. [AIIMS 2004]

Read the assertion and reason carefully to mark the correct option out of the options given below: Assertion : Tobacco is a local irritant. Reason : It does not show stimulant behaviour.

Assertion : The female cones are same in number as male cones. Reason : Male and female cones appears alternately on the same branch of the Pinus.

Sexual reproduction in Spirogyra can be described as [CPMT 1987; MP PMT 2001]

One of the genes present exclusively on the X-chromosome in humans is concerned with [AIIMS 2003]

Read the assertion and reason carefully: Assertion : Most common type of ovule is anatropous. Reason : Anatropous ovule is horse ? shoe shaped.

The interspersion of various degrees of chlorosis with the normal green colour of the leaf is called

A duplicate of nomenclature type is termed by a taxonomist as:

Lignified cells are stained by

Cartilage is made up of [Pb. PMT 2000]

Most studies on human genetics have been made through [MP PMT 1990]

Sex-linked characters are[DPMT 1985; CPMT 1980, 86, 93]

Permafrost is the most distinctive feature of:

Assertion : Angiosperms are most recent plants. Reason : Angiosperms lack archegonia.

Most important character of Brassica campesteris is [AFMC 1992; APMEE 1995; RPMT 2002]

Oldest cultivated organism yeasts was discovered by

Sieve tubes have [BHU 1991]

The process of formation of blood corpuscles is called [AFMC 2005]

Erythrocyte maturing factor is: (AMU 2005)

Classification based on sequencing of DNA and chemical nature of protein is:

Which of the following plants have a watery latex

Assertion : Ribosomes came to our knowledge after the discovery of electron microscope. Reason : Electron microscope has a high magnification and resolving power.

The plant body constituting a holdfast, stipe and frond are seen in:

Radial vascular bundle can be seen in [CPMT 1996; MP PMT 2005]

Indian species of Spirogyra in which Prof. Iyengar discovered direct lateral conjugation is

Modified stem present in Gladiolus is [Orissa JEE 2004]

Assertion : Cro-magnon man has more intelligence than the man of present time. Reason : He is regarded as most recent ancestor of today's man.

Thorns, spines and prickles are

Cyanocobalamin is essential for the maturation of: (JIPMER 2002)

Synthesis of Vitamin A in the body takes place in:

Leaves fall from the branches on account of [DPMT 1991]

When the count of W.B.C. falls below the optimum number in blood, it is called [Orissa JEE 2005]

Rainfall is absent but precipitation occurs in:

Assertion : Zygospore of Ulothrix forms meiozoospores and meioaplanospores. Reason : Both are motile.

PGA as the first \[C{{O}_{2}}\] fixation product was discovered in photosynthesis of:

Function of suspensor of embryo is:

Determination of sex of a child depends upon [CPMT 1980]

Actinostele is a modification of

Loranthus is a [DPMT 1987]

A negative effect of transpiration is:

Which of the following element is a component of ferredoxin?

Savannahs are:

Which is employed for artificial ripening of banana fruits?

What is a clone?

Doctor's son [CPMT 1972]