Biology
Biology 11th Standard Multiple Choice Questions With Answers
1) Which is not a property of living being?
A) MetabolismB) DecayC) GrowthD) Reproduction
Ans : Decay
2) A particular plant is strictly seasonal plant. Which one of the following is best suited if it is to be studied in the laboratory?
A) HerbariumB) MuseumC) Botanical gardenD) Flower exhibition
Ans : Herbarium
3) A group of students found two cockroaches in the classroom. They had a debate whether they are alive or dead. Which life property will help them to do so?
A) MetabolismB) GrowthC) IrritabilityD) Reproduction
Ans : Irritability
4) Which of the following shows single stranded RNA and lacks protein coat?
A) BacteriophageB) Plant virusC) ViroidD) Animal virus
Ans : Viroid
5) Causative agent of red tide is ______.
A) DinoflagellateB) EuglenoidC) ChrysophyteD) Lichen
Ans : Dinoflagellate
6) Select odd one out for Heterotrophic bacteria.
A) Nitrogen fixing bacteriaB) LactobacilliC) MethanogensD) Cyanobacteria
Ans : Methanogens
7) Paramoecium : Ciliated Protist Plasmodium : ____________
A) Amoeboid protozoanB) CiliophoraC) Flagellate protozoanD) Sporozoan
Ans : Sporozoan
8) Which is the dominant phase in Pteridophytes?
A) CapsuleB) GametophyteC) SporophyteD) Embryo
Ans : Sporophyte
9) The tallest living gymnosperm among the following is ______.
A) Sequoia sempervirensB) Taxodium mucronatumC) Zamia pygmaeaD) Ginkgo biloba
Ans : Sequoia sempervirens
10) In Bryophytes ______.
A) Sporophyte and gametophyte generation are independentB) Sporophyte is partially dependent upon gametophyteC) Gametophyte is dependent upon SporophyteD) Ginlgo biloba
Ans : Sporophyte is partially dependent upon gametophyte
11) A characteristic of Angiosperm is ______.
A) Colloteral vascular bundlesB) Radial vascular bundlesC) Seed formationD) Double fertilization
Ans : Double fertilization
12) Angiosperms and Gymnosperms resemble in having ______.
A) Vessels in woodB) Mode of nutritionC) SiphonogamyD) Nature of seed
Ans : Siphonogamy
13) Which of the following belongs to a minor phylum?
A) Comb jellyB) Jelly fishC) HerdmaniaD) Salpa
Ans : Comb jelly
14) Select the animal having venous heart.
A) CrocodileB) SalamanderC) RohuD) Toad
Ans : Rohu
15) In Ascaris, ___________.
A) Mesoglea is presentB) Endoderm is a discontinuous layerC) Mesoderm is present in patchesD) Body cavity is absent
Ans : Mesoderm is present in patches
16) Which of the following is incorrect in case of birds?
A) Presence of teethB) Presence of scalesC) Nucleated RBCsD) Hollow bones
Ans : Presence of teeth
17) Chitinous exoskeleton is a characteristic of ___________.
A) DentaliumB) AntedonC) MillipedeD) Sea urchin
Ans : Millipede
18) Growth of cell wall during cell elongation take place by ______.
A) AppositionB) IntussusceptionC) Both a & bD) Superposition
Ans : Intussusception
19) Cell Membrane is composed of ______.
A) Proteins and celluloseB) Proteins and PhospholipidC) Proteins and carbohydratesD) Proteins, Phospholipid and some carbohydrates
Ans : Proteins, Phospholipid and some carbohydrates
20) Plasma membrane is Fluid-structure due to presence of ______
A) CarbohydratesB) LipidC) GlycoproteinD) Polysaccharide
Ans : Lipid
21) Cell Wall is present in
A) Plant cellB) Prokaryotic cellC) Algal cellD) All of the above
Ans : All of the above
22) Plasma membrane is ______.
A) Selectively permeableB) PermeableC) ImpermeableD) Semipermeable
Ans : Selectively permeable
23) Mitochondria DNA is.
A) NakedB) CircularC) Double-strandedD) All of the above
Ans : All of the above
24) Lysosomes are not help full in ______.
A) OsteogenesisB) Cellular digestionC) MetamorphosisD) Lipogenesis
Ans : Lipogenesis
25) Which of the following set of organelles contain DNA?
A) Mitochondria, PeroxysomeB) Plasma membrane, ribosomeC) Mitochondria, chloroplastD) Chloroplast, dictyosome
Ans : Mitochondria, chloroplast
26) Golgi body is absent in
A) ProkaryotesB) Mature mammalian RBCC) AkaryotesD) All of the above
Ans : All of the above
27) Sugar, amino acids and nucleotides unite to their respective subunits to form ______.
A) BioelementsB) MicromoleculesC) MacromoleculesD) All of these
Ans : Micromolecules
28) Glycosidic bond is found in ______.
A) DisaccharideB) NucleosidesC) PolysaccharideD) All of these
Ans : All of these
29) Amino acids in a polypeptide are joined by _____ bond.
A) DisulphideB) GlycosidicC) Hydrogen bondD) None of these
Ans : None of these
30) Lipids associated with cell membrane are ______.
A) SpingomyelinB) IsoprenoidsC) PhospolipidsD) Cholesterol
Ans : Phospolipids
31) Linoleic, Linolenic and _______ acids are referred as essential fatty acids since they cannot be synthesized by the body and hence must be included in daily diet.
A) ArachidonicB) OleicC) StericD) Palmitic
Ans : Arachidonic
32) Haemoglobin is a type of ______ protein, which plays indispensible part in respiration.
A) SimpleB) DerivedC) ConjugatedD) Complex
Ans : Conjugated
33) When inorganic ions or Metallo-organic molecules bind to apoenzyme, they together form ______.
A) IsoenzymeB) HoloenzymeC) Denatured enzymeD) None of these
Ans : Holoenzyme
34) In enzyme kinetics, Km= Vmax/2. If Km value is lower, it indicates ______.
A) Enzyme has less affinity for substrateB) Enzyme has higher affinity towards substrateC) There will be no product formationD) All active sites of enzyme are saturated.
Ans : Enzyme has higher affinity towards substrate
35) The connecting link between Meiosis-I and Meiosis-II is ______.
A) Interphase - IB) Interphase - IIC) InterkinesisD) Anaphase - I
Ans : Interkinesis
36) Synapsis is pairing of ______.
A) Any two chromosomesB) Non-homologous chromosomesC) Sister chromatidsD) Homologous chromosomes
Ans : Homologous chromosomes
37) Spindle apparatus is formed during which stage of mitosis?
A) ProphaseB) MetaphaseC) AnaphaseD) Telophase
Ans : Metaphase
38) Chromosome number of a cell is almost doubled up during ______.
Ans : S - phaseA) G1 - phaseB) S - phaseC) G2 - phaseD) G0 - phase
39) How many meiotic divisions are necessary for the formation of 80 sperms?
A) 80B) 40C) 20D) 10
Ans : 20
40) How many chromatides are present in anaphase-I of meiosis-I of a diploid cell having 20 chromosomes?
A) 4B) 6C) 20D) 40
Ans : 40
41) In which of the following phase of mitosis chromosomes are arranged at the equatorial plane?
A) ProphaseB) MetaphaseC) AnaphaseD) Telophase
Ans : Metaphase
42) Find incorrect statement.
A) Condensation of chromatin material occurs in prophase.B) Daughter chromatids are formed in anaphaseC) Daughter nuclei are formed at metaphase.D) Nuclear membrane reappears in telophase.
Ans : Daughter nuclei are formed at metaphase.
43) Histone proteins are synthesized during ______.
A) G1 phaseB) S - phaseC) G2 phaseD) Interphase
Ans : S - phase
44) Location or position of meristematic regions is divided into ______ types.
A) OneB) TwoC) ThreeD) None of the above
Ans : Three
45) Cambium is also called ______.
A) Apical meristemB) Intercalary meristemC) Lateral meristemD) None of the above
Ans : Lateral meristem
46) Collenchyma is a type of ______ tissue.
A) LivingB) DeadC) Living and deadD) None of the above
Ans : Living
47) ______ is a complex permanent tissue.
A) ParenchymaB) SclerenchymaC) ChlorenchymaD) Xylem
Ans : Xylem
48) Mesophyll tissue is present in ______.
A) RootB) StemC) LeafD) Flower
Ans : Leaf
49) Which one of the following will grow better in moist and shady region?
A) OpuntiaB) OrchidC) MangrooveD) Lotus
Ans : Orchid
50) ________ is a gland which is both exocrine and endocrine.
A) SebaceousB) MammaryC) PancreasD) Pituitary
Ans : Pancreas