5751 + Mcqs in General Page 33 McqOptions

1601.	Photosynthesis in C4 plants is relatively less limited by atmospheric CO2 levels because :
A.	Four carbon acids are the primary initial CO2 fixation production.
B.	The primary fixation of CO2 is mediated via PEP carboxalase.
C.	Effective pumping of CO2 into bundlesheath cells.
D.	Rubisco in C4 plants has higher affinity for CO2.
Answer» C. Effective pumping of CO2 into bundlesheath cells.

Discussion

1602.	Hill reaction takes place
A.	in the absence of CO2
B.	in the presence of carbon dioxide
C.	in the absence of a suitable electron acceptor
D.	none above
Answer» E.

Discussion

1603.	Photorespiration in C3 plants starts from.
A.	phosphoglycerate
B.	phosphosglycolate
C.	glycerate
D.	glycine
Answer» C. glycerate

Discussion

1604.	Who is that scientist who gave the Law of limiting factors ?
A.	Blackman
B.	Hill
C.	Liebig
D.	Von Mohi
Answer» B. Hill

Discussion

1605.	During photosynthessis, plants
A.	absorb O2, release CO2
B.	release O2, absorb CO2
C.	absorb N2, release O2
D.	absorb N2 and release NH3
Answer» C. absorb N2, release O2

Discussion

1606.	In Blackmann’s ‘Law of Limiting Factors’ the rate of photosynthesis continues to increase with the successive increase in the amounts of
A.	carbon dioxide, light, temperature
B.	temperature, light, carbon dioxide
C.	light, temperature, carbon dioxide
D.	light, carbon dioxide, temperature
Answer» B. temperature, light, carbon dioxide

Discussion

1607.	Which option is correct for the few statements are given for the function of cerebram, which of few following option is shows all correct statements.
A.	(i),(ii),(iii)
B.	(iii),(iv),(i)
C.	(i),(iii),(iv)
D.	(i),(ii)
Answer» C. (i),(iii),(iv)

Discussion

1608.	column I lists the part of the human brain and column II lists the functions. Match the two column and identify the correct choice from those given. (K.C.E.T 2005)
A.	(a=s);(b=t);(c=p);(d=q)
B.	(a=t);(b=s);(c=r);(d=q)
C.	(a=t);(b=r);(c=p);(d=q)
D.	(a=t);(b=s);(c=q);(d=p)
Answer» B. (a=t);(b=s);(c=r);(d=q)

Discussion

1609.	Which of the following cranial nerve is not a motor nerve.
A.	XII
B.	IV
C.	II
D.	III
Answer» D. III

Discussion

1610.	Nerve related to diaphragm is (M.P.P.M.T 1999)
A.	trigeminal
B.	vagus
C.	glossopharyngeal
D.	phrenic
Answer» E.

Discussion

1611.	One of the examples of the action of the autonomous nervous system is : (C.B.S.E 2005)
A.	peristalsis of the intestine
B.	knee-jerk response
C.	swallowing of food
D.	pupillary reflex
Answer» B. knee-jerk response

Discussion

1612.	How many pairs of spinal nerve are found in human? (Guj C.E.T 2006)
A.	33
B.	32
C.	31
D.	30
Answer» D. 30

Discussion

1613.	Which of the following is not strictly considered a part of neuron? (C.P.M.T 1998)
A.	dendrite
B.	myelin sheath
C.	axon
D.	Nissle's bodies
Answer» C. axon

Discussion

1614.	What is Nissl's granule consist of ? (C.B.S.E 2007)
A.	DNA
B.	RNA
C.	protein
D.	lipid
Answer» D. lipid

Discussion

1615.	In hypothalamus are located various centres of (J.I.P.M.E.R 2004)
A.	circulation
B.	sleep
C.	memory
D.	body tempreature
Answer» E.

Discussion

1616.	which of the following cranial nerve controls the movement of eye boll ? (B.H.U 2002)
A.	trocheclar
B.	oculomotor
C.	abducen
D.	all of the given
Answer» C. abducen

Discussion

1617.	Match the following human spinal nerves in column I with their respective number in column II and choose the correct option (Kerala 2005)
A.	(P-iv),(Q-iii),(R-i),(S-ii)
B.	(P-iii), (Q-i), (R-ii), (S-iv)
C.	(P-iv),(Q-i),(R-ii),(S-iii)
D.	(P-ii), (Q-iv), (R-i), (S-iii)
Answer» B. (P-iii), (Q-i), (R-ii), (S-iv)

Discussion

1618.	What is true for the following statements ?
A.	True False False
B.	False True False
C.	True True True
D.	True True False
Answer» B. False True False

Discussion

1619.	Node of ranvier is the place where (C.B.S.E.P.M.T 2002)
A.	myelin sheath and neurilemma are discontinuous
B.	axolemma is absent
C.	axolemma is discontinuous
D.	myelin sheath is discontinuous
Answer» E.

Discussion

1620.	Name the animals with freshwater habit in which
A.	Fresh water fishe
B.	ophiocephalus
C.	Crustacean astucus
D.	None of these
Answer» D. None of these

Discussion

1621.	undirectional transmission of a nerve impulse through nerve fibre is due to the fact that:
A.	sodium pump starts operating only at the cyton and then continues into the nerve fiber
B.	nerve fiber is insulated by a medullary sheath
C.	neurotransmitters are released by the axon endings
D.	neurotransmitters are released by dendrites
Answer» D. neurotransmitters are released by dendrites

Discussion

1622.	Centres for sense of smell are located (M.P.P.M.T 1999)
A.	cerebellum
B.	midbrain
C.	olfactory lobes
D.	cerebrum
Answer» D. cerebrum

Discussion

1623.	Which of the following is correct for motor nerve? (A.I.E.E.E 2004)
A.	trochelar
B.	hypoglossal
C.	oculomotor
D.	All the given
Answer» E.

Discussion

1624.	Four healthy people in their twenties got involved in injuries resulting in damage and death of a few cells of the following . Which of the cells are least likely to be replaced by new cells ?(C.B.S.E 2005)
A.	liver cell
B.	osteocytes
C.	neurons
D.	malpighian layer of the skin
Answer» D. malpighian layer of the skin

Discussion

1625.	Injury vagus nerve in humams is not likely to affect: (C.B.S.E 2004)
A.	gastrointestinal movement
B.	cardiac movement
C.	tongue movement
D.	pancreatic movememt
Answer» D. pancreatic movememt

Discussion

1626.	In the resting state of the neural membrane,diffusion due to concentration gradients,if allowed woulddrive: (C.B.S.E 2004)
A.	Na+ out of the cell
B.	k+ into the cell
C.	Na+ into the cell
D.	k+ and Na+out of the cell
Answer» C. Na+ into the cell

Discussion

1627.	What is true for the given statements ?
A.	True False True
B.	True True False
C.	True True True
D.	False True True
Answer» E.

Discussion

1628.	Mouth becomes watery when we look at a delocious food due to
A.	optic respon
B.	olfactory response
C.	Hormonal response
D.	neural response
Answer» B. olfactory response

Discussion

1629.	“Spiny lizard” absorbs water from the atmosphere which is appropriate similar functional option for the statement ?
A.	Tongue of Human
B.	Hygroscpic roots of orchid
C.	Roots of plants
D.	None of these
Answer» C. Roots of plants

Discussion

1630.	Visual area is localised in (A.I.E.E.E 2004)
A.	occipital lobe
B.	parietal lobe
C.	frontal lobe
D.	temporal lobe
Answer» B. parietal lobe

Discussion

1631.	Which of the following is not possible in ecosystem where microflora is absent
A.	Photosynthesi
B.	Decomposition
C.	Assimillation
D.	None of these
Answer» E.

Discussion

1632.	Parasitic animal which is part of bio-geo community and included as zoo planktons and mesofauna of tenestrial ecosystem is ....
A.	Mole
B.	mites
C.	Earthworms
D.	leech
Answer» C. Earthworms

Discussion

1633.	It control auditory reflex
A.	pon
B.	inferior colliculi
C.	pineal body
D.	superior colliculi
Answer» C. pineal body

Discussion

1634.	In a population of salmon fish, potential Natality is 10,000 while realised mortality is 200, then the Vitlal Index =
A.	50,
B.	less then 50
C.	mor then 50
D.	None of these
Answer» C. mor then 50

Discussion

1635.	What is the vital Index, if Birht rate is 0 and Death rate = 5 ?
A.	0
B.	100
C.	1
D.	None of these
Answer» B. 100

Discussion

1636.	In snakes realised (actual) natality is less than potential natality; because.....
A.	all the eggs are not incubated
B.	enviornmental boomrang (resistance)
C.	Though eggs are incubated they donot reach upto adult stage.
D.	All of these.
Answer» E.

Discussion

1637.	If the Birth rate is 10 and death rate is 0 then what is VITAL INDEX ?
A.	0
B.	100
C.	Infinative
D.	1
Answer» D. 1

Discussion

1638.	In given chart,what is the problem seen in living organism staying in‘X’ denoted area ?
A.	endosmosis
B.	exosmsis
C.	a & b both
D.	geting water and maintaing it.
Answer» D. geting water and maintaing it.

Discussion

1639.	Mycobiont Supplies X to phycobiont and phycobiont supplies Y to mycobiont, then what is true for X and Y ?
A.	X : Mineral element ; Y : Habitat
B.	X : organic nutrients ; Y : Inorganic Nutrient
C.	X : Habitat Y : protection
D.	X : Minerals Y : organic nutrients
Answer» E.

Discussion

1640.	Which animal is capable of obtaining water by oxidation of lipid.
A.	Rat
B.	Earthworm
C.	Mole
D.	Kangaroo rat
Answer» E.

Discussion

1641.	In birthrate and deathrate is equal, then what will be the Vital Index ?
A.	= 1
B.	= 100
C.	>100
D.	<100
Answer» C. >100

Discussion

1642.	The given graph shows seasonal changes in the population of Birds of Gujarat in the year 2002. In the given graph what is true for point X ?
A.	Vital Index <100
B.	Vital Index >100
C.	Vital Index =100
D.	None of these
Answer» E.

Discussion

1643.	Which option is correct for the given statement . Statement X : Density dependent factors are intrinsic Reason R : They are generated in population only
A.	Both statement are true
B.	Both statement are false
C.	X is true, y is false
D.	X is false, Y is true
Answer» B. Both statement are false

Discussion

1644.	Indentify me “ My functioning is like an orchid.
A.	Protopteru
B.	Spiny lizard
C.	uromastrix
D.	Spiny platypus
Answer» C. uromastrix

Discussion

1645.	Which is appropriate for the following statement ?
A.	True True
B.	False False
C.	True False
D.	False True
Answer» D. False True

Discussion

1646.	Find out population density. Since last 4 years number of lions in a squre forest is 500 (length of forest =10 km)
A.	1.25 lions/year . 2k meter
B.	12.5 lions/ k meter2 - year
C.	1.025 lions/ cm2 month
D.	12.5 lions/ k meter2 - month
Answer» B. 12.5 lions/ k meter2 - year

Discussion

1647.	Crustacian Astacus = Green land Marine turtle what is ‘X’ accroding to the information given ?
A.	Salt gland
B.	Kidney
C.	None of these
D.	chlorine secretory cells
Answer» C. None of these

Discussion

1648.	Which living organism is seen in the hot water spring having temperature more than 100 C ..
A.	Methanogen
B.	Thermoacidophils
C.	Helophytes
D.	spirokit
Answer» C. Helophytes

Discussion

1649.	In a population of frog ‘J’ type of population growth curve is seen than which information from the given graph can be true for “ point A”
A.	I
B.	II, III
C.	I, III
D.	I, II
Answer» E.

Discussion

1650.	Average human population in a certain time area is 5000 in which 1111 children are produced during an years, find out the birth rate ?
A.	0.1111
B.	0.3333
C.	0.2222
D.	0.4444
Answer» D. 0.4444

Discussion

Explore topic-wise MCQs in Biology.

Photosynthesis in C4 plants is relatively less limited by atmospheric CO2 levels because :

Hill reaction takes place

Photorespiration in C3 plants starts from.

Who is that scientist who gave the Law of limiting factors ?

During photosynthessis, plants

In Blackmann’s ‘Law of Limiting Factors’ the rate of photosynthesis continues to increase with the successive increase in the amounts of

Which option is correct for the few statements are given for the function of cerebram, which of few following option is shows all correct statements.

column I lists the part of the human brain and column II lists the functions. Match the two column and identify the correct choice from those given. (K.C.E.T 2005)

Which of the following cranial nerve is not a motor nerve.

Nerve related to diaphragm is (M.P.P.M.T 1999)

One of the examples of the action of the autonomous nervous system is : (C.B.S.E 2005)

How many pairs of spinal nerve are found in human? (Guj C.E.T 2006)

Which of the following is not strictly considered a part of neuron? (C.P.M.T 1998)

What is Nissl's granule consist of ? (C.B.S.E 2007)

In hypothalamus are located various centres of (J.I.P.M.E.R 2004)

which of the following cranial nerve controls the movement of eye boll ? (B.H.U 2002)

Match the following human spinal nerves in column I with their respective number in column II and choose the correct option (Kerala 2005)

What is true for the following statements ?

Node of ranvier is the place where (C.B.S.E.P.M.T 2002)

Name the animals with freshwater habit in which

undirectional transmission of a nerve impulse through nerve fibre is due to the fact that:

Centres for sense of smell are located (M.P.P.M.T 1999)

Which of the following is correct for motor nerve? (A.I.E.E.E 2004)

Four healthy people in their twenties got involved in injuries resulting in damage and death of a few cells of the following . Which of the cells are least likely to be replaced by new cells ?(C.B.S.E 2005)

Injury vagus nerve in humams is not likely to affect: (C.B.S.E 2004)

In the resting state of the neural membrane,diffusion due to concentration gradients,if allowed woulddrive: (C.B.S.E 2004)

What is true for the given statements ?

Mouth becomes watery when we look at a delocious food due to

“Spiny lizard” absorbs water from the atmosphere which is appropriate similar functional option for the statement ?

Visual area is localised in (A.I.E.E.E 2004)

Which of the following is not possible in ecosystem where microflora is absent

Parasitic animal which is part of bio-geo community and included as zoo planktons and mesofauna of tenestrial ecosystem is ....

It control auditory reflex

In a population of salmon fish, potential Natality is 10,000 while realised mortality is 200, then the Vitlal Index =

What is the vital Index, if Birht rate is 0 and Death rate = 5 ?

In snakes realised (actual) natality is less than potential natality; because.....

If the Birth rate is 10 and death rate is 0 then what is VITAL INDEX ?

In given chart,what is the problem seen in living organism staying in‘X’ denoted area ?

Mycobiont Supplies X to phycobiont and phycobiont supplies Y to mycobiont, then what is true for X and Y ?

Which animal is capable of obtaining water by oxidation of lipid.

In birthrate and deathrate is equal, then what will be the Vital Index ?

The given graph shows seasonal changes in the population of Birds of Gujarat in the year 2002. In the given graph what is true for point X ?

Which option is correct for the given statement . Statement X : Density dependent factors are intrinsic Reason R : They are generated in population only

Indentify me “ My functioning is like an orchid.

Which is appropriate for the following statement ?

Find out population density. Since last 4 years number of lions in a squre forest is 500 (length of forest =10 km)

Crustacian Astacus = Green land Marine turtle what is ‘X’ accroding to the information given ?

Which living organism is seen in the hot water spring having temperature more than 100 C ..

In a population of frog ‘J’ type of population growth curve is seen than which information from the given graph can be true for “ point A”

Average human population in a certain time area is 5000 in which 1111 children are produced during an years, find out the birth rate ?