14620 + Mcqs in Biology Page 246 McqOptions

12251.	Assertion : The sex organs in the bryophytes are jacketed. Reason : Bryophytes are land plants.
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

12252.	Animals belonging to the order ?rodentia? have [DPMT 1985]
A.	Long incisors
B.	long canines
C.	short incisors
D.	long molars
Answer» B. long canines

Discussion

12253.	A green manure is
A.	Rice
B.	Sorghum
C.	Maize
D.	Sesbania
Answer» E.

Discussion

12254.	Which one has a sweet taste, but is not a sugar?
A.	Starch
B.	Lactose
C.	Protein
D.	Saccharine
Answer» E.

Discussion

12255.	Assertion : Double fertilization is unique to angiosperms. Reason : Triple fusion occurs in double fertilization.
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

12256.	The careers of hereditary material are [MP PMT 2002]
A.	Chromosomes
B.	Gene
C.	Gametes
D.	Gametocytes
Answer» B. Gene

Discussion

12257.	Gametes formed by meiosis are called [AFMC 1994, 95]
A.	Coenogametes
B.	Meiogametes
C.	Mitogametes
D.	None of these
Answer» C. Mitogametes

Discussion

12258.	Assertion : Bryophytes and tracheophytes have an embryo stage in their life cycle. Reason : Embryophyta are terrestrial plants.
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

12259.	Assertion : Power house of cell is mitochondria. Reason : ATP is produced in mitochondria
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

12260.	The term blastocyst is applied to the blastula of which one of the following [MP PMT 1995]
A.	Kangaroo
B.	Platypus
C.	Monkey
D.	Both kangaroo and monkey
Answer» D. Both kangaroo and monkey

Discussion

12261.	Red rust of tea is caused by [CPMT 1999; JIPMER 2001; BHU 2003]
A.	Cephaleuros
B.	Synchytrium
C.	Mucor
D.	Fusarium
Answer» B. Synchytrium

Discussion

12262.	Which of the following form contain algae [BHU 2005]
A.	Equisetum
B.	Selaginella
C.	Marsilea
D.	None of these
Answer» E.

Discussion

12263.	One of the following plant species is in endangered list [Haryana PMT 2000]
A.	Eucalyptus
B.	Nepenthes
C.	Ceratophyllum
D.	Delonix
Answer» C. Ceratophyllum

Discussion

12264.	Assertion : Homologous organs have common ancestry and similar function. Reason : Analgous organs have unlike origin and dissimilar function.
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

12265.	Avena coleoptile test detects the presence of [RPMT 1999; JIPMER 2002]
A.	IAA
B.	GA
C.	NAA
D.	BA
Answer» B. GA

Discussion

12266.	Alpine tundra is found in
A.	Siberia
B.	Greenland
C.	Both a and b
D.	Himalayas
Answer» E.

Discussion

12267.	Read the assertion and reason carefully to mark the correct option out of the options given below: Assertion : AIDS and Hepatitis B are common in drug addicts. Reason : Drugs serve as vector for AIDS and Hepatitis.
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

12268.	The cell organelles are found in [MP PMT 1996]
A.	Bacterial cells
B.	Cyanobacterial cells
C.	Prokaryotic cells
D.	Eukaryotic cells
Answer» E.

Discussion

12269.	Assertion : Basidiocarps are called fungus flowers. Reason : The beautiful fruit bodies are found in Basidiomycotina.
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

12270.	Leaf abscission, fruit fall, bud dormancy occurs by which phytohormone [AFMC 2004]
A.	Auxin
B.	Cytokinin
C.	Gibberellins
D.	Abscisic acid
Answer» E.

Discussion

12271.	The following is a naturally occuring growth inhibitors [CPMT 1981, 84, 96; AFMC 1980; AMU 1986; JIPMER 1986]
A.	IAA
B.	ABA
C.	NAA
D.	GA
Answer» C. NAA

Discussion

12272.	In the phosphorus cycle, phosphate becomes available by weathering of rocks first to [Pb. PMT 2004]
A.	Consumers
B.	Producers
C.	Decomposers
D.	None of these
Answer» C. Decomposers

Discussion

12273.	The thallus of Volvox is called [Pb. PMT 2004]
A.	Trichome
B.	Coenobium
C.	Coenocyte
D.	Parenchymatous
Answer» C. Coenocyte

Discussion

12274.	Chromosome number is [MP PMT 2003]
A.	Fixed for a species
B.	Fixed for an ecosystem
C.	Fixed for a community
D.	Fixed for a biosphere
Answer» B. Fixed for an ecosystem

Discussion

12275.	A fat called blubber could be obtained from [Kerala PMT 2001]
A.	Bat
B.	Dolphin
C.	Shark
D.	Blue whale
Answer» E.

Discussion

12276.	Which of the following is used as a source of protein or Major source of protein is [MP PMT 1998]
A.	Cicer arietinum
B.	Beta vulgaris
C.	Rizobium leguminosarum
D.	Oryza sativa
Answer» B. Beta vulgaris

Discussion

12277.	One of the following bacterial groups are exploited in biogas production [JIPMER 2000]
A.	Methogens
B.	Methanotrophs
C.	Organotrophs
D.	Eubacteria
Answer» B. Methanotrophs

Discussion

12278.	The giant algae or sea weeds belong to class [Bihar MDAT 1995]
A.	Phaeophyceae
B.	Rhodophyceae
C.	Chlorophyceae
D.	Xanthophyceae
Answer» B. Rhodophyceae

Discussion

12279.	Assertion : The concentration of\[{{O}_{2}}\]in the atmosphere is inhibitory to photosynthesis. Reason : Oxygen inhibitory effect is due to Warburg effect.
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

12280.	Number of (approximately) genes in E. coli are [CPMT 2005]
A.	4000
B.	6000
C.	10000
D.	18000
Answer» C. 10000

Discussion

12281.	Which one of the following plant function is not generally governed or controlled by auxin [RPMT 1985]
A.	Apical dominance
B.	Phototropism
C.	Photosynthesis
D.	Growth
Answer» D. Growth

Discussion

12282.	In honey bees the drones (males) are produced from [MP PMT 1996, 99; CPMT 1999]
A.	Unfertilized eggs
B.	Fertilized eggs
C.	Larvae fed by royal jelly
D.	Fasting larvae
Answer» B. Fertilized eggs

Discussion

12283.	A blastula which is solid, is known as
A.	Stereoblastula
B.	Coeloblastula
C.	Superficial blastula
D.	Discoblastula
Answer» B. Coeloblastula

Discussion

12284.	Assertion : Enzyme becomes inactive below minimum temperature. Reason : The inactivity of the enzymes is due to denaturation.
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

12285.	Period of active mitosis ranges from [DPMT 1991]
A.	10 minutes to a few hours
B.	A few hours to a one day
C.	One day to a week
D.	Less than a minute
Answer» B. A few hours to a one day

Discussion

12286.	Assertion : The female cone of Cycas is not true cone. Reason : Its formation checks the growth of the stem.
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

12287.	The smallest living cells with cell wall are [MP PMT 1994]
A.	Viroids
B.	Algae
C.	Bacteria
D.	Mycoplasma
Answer» D. Mycoplasma

Discussion

12288.	Assertion : Copulatory bursa is present is male Ancylostoma. Reason : Copulatory bursa helps in copulation.
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

12289.	Assertion : Specialization of cells is advantageous for the organism. Reason : It increase the operational efficiency of an organism. [AIIMS 2002]
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

12290.	Read the assertion and reason carefully: Assertion : Ovary is surrounded by integument. Reason : Endothelium is a modified integument.
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» F.

Discussion

12291.	Assertion : In a monohybrid cross, generation indicate dominant characters. Reason : Dominance occurs only in heterozygous state.
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

12292.	Assertion : In septate mycelium, the septa are complete partition walls between the cells. Reason : There is no cytoplasmic connections between adjacent cells.
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

12293.	Which one has the maximum biomass [Haryana PMT 1993; DPMT 1999; Orissa 2004]
A.	Temperate forest
B.	Tropical rain forest
C.	Alpine vegetation
D.	Taiga
Answer» C. Alpine vegetation

Discussion

12294.	Read the assertion and reason carefully: Assertion : In caducous plants, leaves are never formed. Reason : In deciduous plants, all leaves fall together.
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» F.

Discussion

12295.	Identify the correct pair of an animal and its habital region [AIEEE 2004]
A.	Elephant - Ranthmbore
B.	Flamingo - Rann of Kutch
C.	Wild - Dachigam
D.	Great Indian Bustard - Assam
Answer» C. Wild - Dachigam

Discussion

12296.	Assertion : First time Darwin used the phrase "survival of the fittest". Reason : The survival of the fittest is the reuslt of natural selection.
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» F.

Discussion

12297.	Assertion : Funaria is monoecious. Reason : Cross fertilization occurs in Funaria.
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

12298.	Sea horse is [RPMT 1995,CPMT 2003]
A.	Fish
B.	Reptile
C.	Mammal
D.	Bird
Answer» B. Reptile

Discussion

12299.	Assertion : Acraniata is a group of organisms which do not have distinct cranium. [AIIMS 1997] Reason : It includes small marine forms without head.
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

12300.	Assertion : Bats and whales are classified as mammals. Reason : Bats and whales have four-chambered heart. [AIIMS 2003]
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

Explore topic-wise MCQs in NEET.

Assertion : The sex organs in the bryophytes are jacketed. Reason : Bryophytes are land plants.

Animals belonging to the order ?rodentia? have [DPMT 1985]

A green manure is

Which one has a sweet taste, but is not a sugar?

Assertion : Double fertilization is unique to angiosperms. Reason : Triple fusion occurs in double fertilization.

The careers of hereditary material are [MP PMT 2002]

Gametes formed by meiosis are called [AFMC 1994, 95]

Assertion : Bryophytes and tracheophytes have an embryo stage in their life cycle. Reason : Embryophyta are terrestrial plants.

Assertion : Power house of cell is mitochondria. Reason : ATP is produced in mitochondria

The term blastocyst is applied to the blastula of which one of the following [MP PMT 1995]

Red rust of tea is caused by [CPMT 1999; JIPMER 2001; BHU 2003]

Which of the following form contain algae [BHU 2005]

One of the following plant species is in endangered list [Haryana PMT 2000]

Assertion : Homologous organs have common ancestry and similar function. Reason : Analgous organs have unlike origin and dissimilar function.

Avena coleoptile test detects the presence of [RPMT 1999; JIPMER 2002]

Alpine tundra is found in

Read the assertion and reason carefully to mark the correct option out of the options given below: Assertion : AIDS and Hepatitis B are common in drug addicts. Reason : Drugs serve as vector for AIDS and Hepatitis.

The cell organelles are found in [MP PMT 1996]

Assertion : Basidiocarps are called fungus flowers. Reason : The beautiful fruit bodies are found in Basidiomycotina.

Leaf abscission, fruit fall, bud dormancy occurs by which phytohormone [AFMC 2004]

The following is a naturally occuring growth inhibitors [CPMT 1981, 84, 96; AFMC 1980; AMU 1986; JIPMER 1986]

In the phosphorus cycle, phosphate becomes available by weathering of rocks first to [Pb. PMT 2004]

The thallus of Volvox is called [Pb. PMT 2004]

Chromosome number is [MP PMT 2003]

A fat called blubber could be obtained from [Kerala PMT 2001]

Which of the following is used as a source of protein or Major source of protein is [MP PMT 1998]

One of the following bacterial groups are exploited in biogas production [JIPMER 2000]

The giant algae or sea weeds belong to class [Bihar MDAT 1995]

Assertion : The concentration of\[{{O}_{2}}\]in the atmosphere is inhibitory to photosynthesis. Reason : Oxygen inhibitory effect is due to Warburg effect.

Number of (approximately) genes in E. coli are [CPMT 2005]

Which one of the following plant function is not generally governed or controlled by auxin [RPMT 1985]

In honey bees the drones (males) are produced from [MP PMT 1996, 99; CPMT 1999]

A blastula which is solid, is known as

Assertion : Enzyme becomes inactive below minimum temperature. Reason : The inactivity of the enzymes is due to denaturation.

Period of active mitosis ranges from [DPMT 1991]

Assertion : The female cone of Cycas is not true cone. Reason : Its formation checks the growth of the stem.

The smallest living cells with cell wall are [MP PMT 1994]

Assertion : Copulatory bursa is present is male Ancylostoma. Reason : Copulatory bursa helps in copulation.

Assertion : Specialization of cells is advantageous for the organism. Reason : It increase the operational efficiency of an organism. [AIIMS 2002]

Read the assertion and reason carefully: Assertion : Ovary is surrounded by integument. Reason : Endothelium is a modified integument.

Assertion : In a monohybrid cross, generation indicate dominant characters. Reason : Dominance occurs only in heterozygous state.

Assertion : In septate mycelium, the septa are complete partition walls between the cells. Reason : There is no cytoplasmic connections between adjacent cells.

Which one has the maximum biomass [Haryana PMT 1993; DPMT 1999; Orissa 2004]

Read the assertion and reason carefully: Assertion : In caducous plants, leaves are never formed. Reason : In deciduous plants, all leaves fall together.

Identify the correct pair of an animal and its habital region [AIEEE 2004]

Assertion : First time Darwin used the phrase "survival of the fittest". Reason : The survival of the fittest is the reuslt of natural selection.

Assertion : Funaria is monoecious. Reason : Cross fertilization occurs in Funaria.

Sea horse is [RPMT 1995,CPMT 2003]

Assertion : Acraniata is a group of organisms which do not have distinct cranium. [AIIMS 1997] Reason : It includes small marine forms without head.

Assertion : Bats and whales are classified as mammals. Reason : Bats and whales have four-chambered heart. [AIIMS 2003]