91 + Mcqs in Biology Page 1 McqOptions

1.	Which one of the following is not an insect:~!
A.	Bed bug
B.	House fly
C.	Mosquitoes
D.	Spider
Answer» E.

Discussion

2.	Reflex actions are controlled by :~!
A.	The cells
B.	The Spinal Chord
C.	The Brain
D.	The Nerves
Answer» C. The Brain

Discussion

3.	Reflex actions are controlled by :~!
A.	The cells
B.	The Spinal Chord
C.	The Brain
D.	The Nerves
Answer» C. The Brain

Discussion

4.	Pollination by wind is called
A.	anemophily
B.	hydrophily
C.	zoophily
D.	entomophily
Answer» B. hydrophily

Discussion

5.	Plants receive their nutrients mainly from%!
A.	chlorophyll
B.	atmosphere
C.	light
D.	soil
Answer» E.

Discussion

6.	Pollination by wind is called%!
A.	anemophily
B.	hydrophily
C.	zoophily
D.	entomophily
Answer» B. hydrophily

Discussion

7.	Ramapithecus and Cro-Magnon man are considered
A.	ancestors of modern man
B.	ancestors of monkey
C.	ancestors of lion
D.	None of the above
Answer» B. ancestors of monkey

Discussion

8.	Myopia is connected with%!
A.	ears
B.	eyes
C.	lungs
D.	None of these
Answer» C. lungs

Discussion

9.	Ramapithecus and Cro-Magnon man are considered%!
A.	ancestors of modern man
B.	ancestors of monkey
C.	ancestors of lion
D.	None of the above
Answer» B. ancestors of monkey

Discussion

10.	Radical vascular bundles are those in which%!
A.	xylem is surrounded by phloem
B.	phloem is surrounded by xylem
C.	xylem and phloem occur on the same radius
D.	xylem and phloem occur on the different radii
Answer» E.

Discussion

11.	Process of cell division can take place by%!
A.	heterosis
B.	fusion
C.	mitosis
D.	None of these
Answer» D. None of these

Discussion

12.	Nucleus, the genetic material containing rounded body in each cell, was first discovered in 1831 by%!
A.	Robert Hooke
B.	Robert Brown
C.	Rudolf Virchow
D.	Theodore Schwann
Answer» C. Rudolf Virchow

Discussion

13.	O2 released in the process of photosynthesis comes from%!
A.	CO2
B.	water
C.	sugar
D.	pyruvic acid
Answer» C. sugar

Discussion

14.	N2 content is kept constant in the biosphere due to%!
A.	N2 fixation
B.	industrial pollution
C.	nitrogen cycle
D.	absorption of N2
Answer» D. absorption of N2

Discussion

15.	Plants absorb dissolved nitrates from soil and convert them into%!
A.	free nitrogen
B.	urea
C.	ammonia
D.	proteins
Answer» B. urea

Discussion

16.	/_Plants receive their nutrients mainly from?
A.	chlorophyll
B.	atmosphere
C.	light
D.	soil
Answer» E.

Discussion

17.	/_Biotic component of the environment does not include-?
A.	Soil system
B.	Animal system
C.	Micro-organism system
D.	Plant system
Answer» B. Animal system

Discussion

18.	/_Plants absorb dissolved nitrates from soil and convert them into?
A.	free nitrogen
B.	urea
C.	ammonia
D.	proteins
Answer» B. urea

Discussion

19.	/_Number of chromosomes in Down's syndrome is?
A.	46
B.	47
C.	48
D.	49
Answer» C. 48

Discussion

20.	/_Nymph is the name of young one of?
A.	butterfly
B.	beetle
C.	housefly
D.	cockroach
Answer» E.

Discussion

21.	/_Radish is a?
A.	bulb
B.	conn
C.	modified root
D.	tuber
Answer» D. tuber

Discussion

22.	/_Radioactivity is a phenomenon of the spontaneous emission of?
A.	protons (alpha particles)
B.	electrons (beta particles)
C.	gamma rays (short wave electromagnetic waves)
D.	All of the above
Answer» E.

Discussion

23.	/_On which of the following plants did Gregor Mendal perform his classical experiment??
A.	Gram
B.	Maize
C.	Pea
D.	Wheat
Answer» D. Wheat

Discussion

24.	/_Ramapithecus and Cro-Magnon man are considered?
A.	ancestors of modern man
B.	ancestors of monkey
C.	ancestors of lion
D.	None of the above
Answer» B. ancestors of monkey

Discussion

25.	/_Myopia is connected with?
A.	ears
B.	eyes
C.	lungs
D.	None of these
Answer» C. lungs

Discussion

26.	/_Radical vascular bundles are those in which?
A.	xylem is surrounded by phloem
B.	phloem is surrounded by xylem
C.	xylem and phloem occur on the same radius
D.	xylem and phloem occur on the different radii
Answer» E.

Discussion

27.	/_Nucleus, the genetic material containing rounded body in each cell, was first discovered in 1831 by?
A.	Robert Hooke
B.	Robert Brown
C.	Rudolf Virchow
D.	Theodore Schwann
Answer» C. Rudolf Virchow

Discussion

28.	/_Process of cell division can take place by?
A.	heterosis
B.	fusion
C.	mitosis
D.	None of these
Answer» D. None of these

Discussion

29.	/_N2 content is kept constant in the biosphere due to?
A.	N2 fixation
B.	industrial pollution
C.	nitrogen cycle
D.	absorption of N2
Answer» D. absorption of N2

Discussion

30.	/_O2 released in the process of photosynthesis comes from?
A.	CO2
B.	water
C.	sugar
D.	pyruvic acid
Answer» C. sugar

Discussion

31.	%_Mutation is_%
A.	a factor responsible for plant growth
B.	a change which affects the offspring of F2 generation only
C.	a change that is inherited
D.	a change which affects the parents
Answer» D. a change which affects the parents

Discussion

32.	%_Photo-oxidation is_%
A.	photorespiration
B.	photolysis
C.	light and oxygen induced breakdown
D.	All of the above
Answer» E.

Discussion

33.	_ Pollination is best defined as$?
A.	transfer of pollen from anther to stigma
B.	germination of pollen grains
C.	growth of pollen tube in ovule
D.	visiting flowers by insects
Answer» B. germination of pollen grains

Discussion

34.	_ Mycobacterium leprae causes leprosy, Corynebacterium diphtheria causes diphtheria and Vibrio comma causes$?
A.	tetanus
B.	influenza
C.	cholera
D.	typhoid
Answer» D. typhoid

Discussion

35.	_ Plants synthesis protein from$?
A.	starch
B.	sugar
C.	amino acids
D.	fatty acids
Answer» D. fatty acids

Discussion

36.	_ Rain water helps to increase the ____ to some extent.$?
A.	phosphorous contents
B.	nitrogen contents
C.	calcium contents
D.	potash contents
Answer» D. potash contents

Discussion

37.	_ Oxygen in our blood is transported by a protein named$?
A.	haemoglobin
B.	keratin
C.	collagen
D.	myoglobin
Answer» B. keratin

Discussion

38.	_ Outer covering of virus made up of protein is$?
A.	capsid
B.	coat
C.	virion
D.	viriod
Answer» B. coat

Discussion

39.	_ Monocot root differs from dicot root in having$?
A.	open vascular bundles
B.	scattered vascular bundles
C.	well developed pith
D.	radially arranged vascular bundles
Answer» D. radially arranged vascular bundles

Discussion

40.	_ Photosynthesis is a process$?
A.	reductive and exergonic
B.	reductive and catabolic
C.	reductive, endergonic and catabolic
D.	reductive, endergonic and anabolic
Answer» E.

Discussion

41.	_ Our skin, when exposed to excess sunlight, becomes dark. This is because our skin pigments called$?
A.	flavoxanthin
B.	melanin
C.	carotene
D.	Xanthophyll
Answer» C. carotene

Discussion

42.	_ Prothrombin which helps in clotting of blood is released by$?
A.	lymphocytes
B.	erythrocytes
C.	monocytes
D.	blood platelets
Answer» E.

Discussion

43.	_ Poison glands of snakes are homologous to$?
A.	electric organs of fishes
B.	stings of rays
C.	sebaceous glands of mammals
D.	salivary glands of vertebrates
Answer» E.

Discussion

44.	_ Photosynthesis takes place faster in$?
A.	yellow light
B.	white light
C.	red light
D.	darkness
Answer» C. red light

Discussion

45.	_ Photo-oxidation is$?
A.	photorespiration
B.	photolysis
C.	light and oxygen induced breakdown
D.	All of the above
Answer» E.

Discussion

46.	_ Phloem is a tissue found in$?
A.	reproductive organs of animals
B.	plants
C.	insects
D.	mammals
Answer» C. insects

Discussion

47.	_ Pyorrhoea is a disease of the$?
A.	nose
B.	gums
C.	heart
D.	lungs
Answer» C. heart

Discussion

48.	__Oxyreductases, transferases, hydrolases, lyases, isomerases and ligases are all classes of__
A.	hormones
B.	enzymes
C.	proteins
D.	vitamins
Answer» C. proteins

Discussion

49.	_Pine, fir, spruce, cedar, larch and cypress are the famous timber-yielding plants of which several also occur widely in the hilly regions of India. All these belong to$?
A.	angiosperms
B.	gymnosperms
C.	monocotyledons
D.	dicotyledons
Answer» C. monocotyledons

Discussion

50.	_Ptyalin is an enzyme produced in the$?
A.	salivary glands
B.	pituitary glands
C.	thyroid glands
D.	pancreas
Answer» B. pituitary glands

Discussion

Explore topic-wise MCQs in General Knowledge.

Which one of the following is not an insect:~!

Reflex actions are controlled by :~!

Reflex actions are controlled by :~!

Pollination by wind is called

Plants receive their nutrients mainly from%!

Pollination by wind is called%!

Ramapithecus and Cro-Magnon man are considered

Myopia is connected with%!

Ramapithecus and Cro-Magnon man are considered%!

Radical vascular bundles are those in which%!

Process of cell division can take place by%!

Nucleus, the genetic material containing rounded body in each cell, was first discovered in 1831 by%!

O2 released in the process of photosynthesis comes from%!

N2 content is kept constant in the biosphere due to%!

Plants absorb dissolved nitrates from soil and convert them into%!

*/*_Plants receive their nutrients mainly from?

*/*_Biotic component of the environment does not include-?

*/*_Plants absorb dissolved nitrates from soil and convert them into?

*/*_Number of chromosomes in Down's syndrome is?

*/*_Nymph is the name of young one of?

*/*_Radish is a?

*/*_Radioactivity is a phenomenon of the spontaneous emission of?

*/*_On which of the following plants did Gregor Mendal perform his classical experiment??

*/*_Ramapithecus and Cro-Magnon man are considered?

*/*_Myopia is connected with?

*/*_Radical vascular bundles are those in which?

*/*_Nucleus, the genetic material containing rounded body in each cell, was first discovered in 1831 by?

*/*_Process of cell division can take place by?

*/*_N2 content is kept constant in the biosphere due to?

*/*_O2 released in the process of photosynthesis comes from?

%_Mutation is_%

%_Photo-oxidation is_%

_ Pollination is best defined as$?

_ Mycobacterium leprae causes leprosy, Corynebacterium diphtheria causes diphtheria and Vibrio comma causes$?

_ Plants synthesis protein from$?

_ Rain water helps to increase the ____ to some extent.$?

_ Oxygen in our blood is transported by a protein named$?

_ Outer covering of virus made up of protein is$?

_ Monocot root differs from dicot root in having$?

_ Photosynthesis is a process$?

_ Our skin, when exposed to excess sunlight, becomes dark. This is because our skin pigments called$?

_ Prothrombin which helps in clotting of blood is released by$?

_ Poison glands of snakes are homologous to$?

_ Photosynthesis takes place faster in$?

_ Photo-oxidation is$?

_ Phloem is a tissue found in$?

_ Pyorrhoea is a disease of the$?

__Oxyreductases, transferases, hydrolases, lyases, isomerases and ligases are all classes of__

_Pine, fir, spruce, cedar, larch and cypress are the famous timber-yielding plants of which several also occur widely in the hilly regions of India. All these belong to$?

_Ptyalin is an enzyme produced in the$?

/_Plants receive their nutrients mainly from?

/_Biotic component of the environment does not include-?

/_Plants absorb dissolved nitrates from soil and convert them into?

/_Number of chromosomes in Down's syndrome is?

/_Nymph is the name of young one of?

/_Radish is a?

/_Radioactivity is a phenomenon of the spontaneous emission of?

/_On which of the following plants did Gregor Mendal perform his classical experiment??

/_Ramapithecus and Cro-Magnon man are considered?

/_Myopia is connected with?

/_Radical vascular bundles are those in which?

/_Nucleus, the genetic material containing rounded body in each cell, was first discovered in 1831 by?

/_Process of cell division can take place by?

/_N2 content is kept constant in the biosphere due to?

/_O2 released in the process of photosynthesis comes from?

Oxyreductases, transferases, hydrolases, lyases, isomerases and ligases are all classes of