Biology - One Mark Question Paper

11th Standard

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Biology

Time : 01:00:00 Hrs
Total Marks : 50

    Answer ALL Questions

    50 x 1 = 50
  1. Identify the incorrect statement about the Gram positive bacteria

    (a)

    Techoic acid absent

    (b)

    High percentage of peptidoglycan is found in cell wall

    (c)

    Cell wall is single layered

    (d)

    Lipopolysaccharide is present in cell wall

  2. Identify the correctly matched pair

    (a)

    Actinomycete - Late blight

    (b)

    Mycoplasma - Lumpy jaw

    (c)

    Bacteria - Crown gall

    (d)

    Fungi - Sandal spike

  3. Monotropa derives nutrition by ___________

    (a)

    Root Nodules

    (b)

    Lichens

    (c)

    Mycorrhizae

    (d)

    Roots

  4. Living organisms constitute __________

    (a)

    Living world

    (b)

    Non-living world

    (c)

    Animal kingdom

    (d)

    Plant kingdom

  5. TMV has a molecular weight of _____________ Daltons.

    (a)

    39 \(\times\) 106

    (b)

    38 \(\times\) 105

    (c)

    39 \(\times\) 107

    (d)

    39 \(\times\) 1010

  6. A marine cyanobacterjal species _______________

    (a)

    Trichodesmium

    (b)

    Gloeocapsa

    (c)

    Nostoc

    (d)

    Cycas

  7. Tobacco mosaic virus is a:

    (a)

    romboid shaped helical virus

    (b)

    rod shaped helical virus

    (c)

    rectangular shaped virus

    (d)

    triangular shaped helical virus

  8. Give an example for cuboid symmetry.

    (a)

    Adeno virus

    (b)

    Influenza virus

    (c)

    TMV

    (d)

    Bacteriophage.

  9. Prions are infections

    (a)

    Nucleic acid

    (b)

    Lipids

    (c)

    Proteins

    (d)

    Carbohydrates

  10. Blue green algae is otherwise called ___________.

    (a)

    Xanthophyceae

    (b)

    Batillariophyceae

    (c)

    Cyanophyceae

    (d)

    Myxophyceae

  11. Viroids differ from viruses in having:

    (a)

    DNA molecules with protein coat

    (b)

    DNA molecules without protein coat

    (c)

    RNA molecules with protein coat

    (d)

    RNA molecules without protein coat

  12. Which of following represent generation in pteridophytes?

    (a)

    Prothallus

    (b)

    Thallus.

    (c)

    Cone

    (d)

    Rhizophore

  13. The haploid number of chromosome for an Angiosperm is 14, the number of chromosome in its endosperm would be

    (a)

    7

    (b)

    14

    (c)

    42

    (d)

    28

  14. Tubers store food materials in _____

    (a)

    Oedogonium

    (b)

    Chara

    (c)

    Ulothrix

    (d)

    Fucus

  15. Pulmonary tuberculosis is caused by:

    (a)

    Funaria hygrometrica

    (b)

    Sphagnu

    (c)

    Marchantia polynmorpha

    (d)

    Riccia

  16. In Red algae female sex organ is called as ___________ .

    (a)

    Trichogine

    (b)

    Ovule

    (c)

    Oogamete

    (d)

    Carpogonium

  17. When the root is thick and fleshy, but, does not taken a definite shape, it said to be

    (a)

    Nodulose root

    (b)

    Tuberous root

    (c)

    Monilliform root

    (d)

    Fasiculated root

  18. Curcuma amada, Curcuma domestica, Asparagus, Maranta are example of

    (a)

    Tuberous root

    (b)

    Beaded root

    (c)

    Moniliform root

    (d)

    Nodulose root

  19. Opposite decussate phyllotaxy is found in ____

    (a)

    Calotropis

    (b)

    Mango

    (c)

    Hibiscus

    (d)

    Nerium

  20. The cells of this region undergo active cell division____________.

    (a)

    root hair zone

    (b)

    maturation zone

    (c)

    elongation zone

    (d)

    meristematic zone

  21. In Polyalthia longifolia, the stem is_____________.

    (a)

    decurrent

    (b)

    caudex

    (c)

    excurrent

    (d)

    culm

  22. In an inflorescence where flowers are borne laterally in an acropetal succession the position of the youngest floral bud shall be

    (a)

    Proximal

    (b)

    Distal

    (c)

    Intercalary

    (d)

    Anywhere

  23. The taxonomy which involves the similarities and dissimilarities among the immune system of different taxa is termed as

    (a)

    Chemotaxonomy

    (b)

    Molecular systematics

    (c)

    Serotaxonomy

    (d)

    Numerical taxonomy

  24. Many cells function properly and divide mitotically even though they do not have

    (a)

    plasma membrane

    (b)

    cytoskeleton

    (c)

    mitochondria

    (d)

    plastids

  25. Digestion of cell organelles by the cell is called_____

    (a)

    Phagocytosis

    (b)

    Pinocytosis

    (c)

    Autophagy

    (d)

    Autolysis

  26. Compound microscope was invented by___________________________________

    (a)

    Z. Jansen

    (b)

    Compound microscope

    (c)

    Microscope

    (d)

    Bright field microscope.

  27. Unique characteristic of__________________________is that they are inherited from female parent only.

    (a)

    Golgi bodies

    (b)

    Mitochondria

    (c)

    Mitochondrial DNA

    (d)

    Chloroplasts

  28. _____________________was discovered by Harry Beevers.

    (a)

    Glyoxysome

    (b)

    Microbodies

    (c)

    Sphaerosome

    (d)

    Centrioles

  29. Chromatids are identical and are called______________________

    (a)

    Satellite

    (b)

    Kinetochore

    (c)

    Polycentric

    (d)

    Sister chromatids

  30. Anaphase promoting complex APC is a protein degradation machinery necessary for proper mitosis of animal cells. If APC is defective in human cell, which of the following is expected to occur?

    (a)

    Chromosomes will be fragmented

    (b)

    Chromosomes will not condense

    (c)

    Chromosomes will not segregate

    (d)

    Recombination of Chromosomes will occur

  31. Colchicine prevents the mitosis of the cells at which of the following stage

    (a)

    Anaphase

    (b)

    Metaphase

    (c)

    Prophase

    (d)

    interphase

  32. Which one is a incorrect pair?

    (a)

    G2 phase - Growth phase

    (b)

    M phase - Interphase

    (c)

    S phase - DNA synthesis

    (d)

    G1 phase - RNA and DNA synthesis

  33. Chromosome contains a short, constricted region called __________ .

    (a)

    Centromere

    (b)

    Homologous pairs

    (c)

    Chromatids

    (d)

    Haploid state

  34. The __________ eventually stretches right across the cell forming the middle lamella.

    (a)

    Cytokinesis

    (b)

    Cell plate

    (c)

    Genetic stability

    (d)

    Repair of tissues

  35. An example of feedback inhibition is

    (a)

    Cyanide action on cytochrome

    (b)

    Sulpha drug on folic acid synthesiser bacteria

    (c)

    Allosteric inhibition of hexokinase by glucose - 6 - phosphate

    (d)

    The inhibition of succinic dehydrogenase by malonate

  36. Proteins perform many physiological functions. For example some functions as enzymes. One of the following represents an additional function that some proteins discharge:

    (a)

    Antibiotics

    (b)

    Pigment conferring colour to skin

    (c)

    Pigments making colours of flowers

    (d)

    Hormones

  37. The middle lamella is made up of ___________.

    (a)

    Muramic acid

    (b)

    Calcium pectate

    (c)

    Phosphoglycerol

    (d)

    Hemicellulose

  38. RNA is the polymer of

    (a)

    Ribonucleotide

    (b)

    Ribonucleoside

    (c)

    Deoxyribonucleotide

    (d)

    Ribosome

  39. Glycogen is not seen in the organs of human body:

    (a)

    Muscle fibre

    (b)

    Liver

    (c)

    Brain

    (d)

    Kidney

  40. ____________ are those that are required for the basic metabolic processes like photosynthesis.

    (a)

    Water

    (b)

    Hydrogen

    (c)

    Organic compounds

    (d)

    Primary metabolites

  41. ____________ are made up of successive layers of amylose and amylopectin.

    (a)

    Polysaccharide

    (b)

    Glycosidic bond

    (c)

    Cellulose

    (d)

    Starch

  42. (a) Single bonded (i) Palmitic acid, Stearic acid
    (b) Double bonded (ii) Palmitic acid, Stearic acid
    (c) Single bonded (iii) Oleic acid, Linoleic acid
    (d) Double bonded (iv) Oleic acid, Linoleic acid
    (a)

    A & D are correct; B & C are incorrect

    (b)

    A & B are correct; C & D are incorrect

    (c)

    A & C are correct; B & D are incorrect

    (d)

    A & D are incorrect; B & C are correct

  43. The individual polypeptide chains of the protein are called ______________

    (a)

    Quaternary protein structure

    (b)

    Subunits

    (c)

    Enzymes

    (d)

    Antibodies

  44. ______________ could also be termed as poisons.

    (a)

    Activation energy

    (b)

    Inhibitors

    (c)

    Competitive inhibitors

    (d)

    Non - competitive inhibitors

  45. ______________ carries a copy of instructions for assembling amino acids into proteins.

    (a)

    Ribonucleic acid

    (b)

    messenger RNA

    (c)

    Prokaryotic mRNA

    (d)

    transfer RNA

  46. When a leaf trace extends from a vascular bundle in a dicot stem, what would be the arrangement of vascular tissues in the veins of the leaf?

    (a)

    Xylem would be on top and the phloem on the bottom

    (b)

    Phloem would be on top and the xylem on the bottom

    (c)

    Xylem would encircle the phloem

    (d)

    Phloem would encircle the xylem

  47. Usually, the monocotyledons do not increase their girth, because

    (a)

    They possess actively dividing cambium

    (b)

    They do not possess actively dividing cambium

    (c)

    Ceases activity of cambium

    (d)

    All are correct

  48. What is the fate of primary xylem in a dicot root showing extensive secondary growth?

    (a)

    It is retained in the center of the axis

    (b)

    It gets crushed

    (c)

    May or may not get crushed

    (d)

    It gets surrounded by primary phloem

  49. Which among the following is correct?
    i. apoplast is fastest and operate in nonliving part. 
    ii. The transmembrane route includes vacuole.
    iii. symplast interconnect the nearby cell through plasmadesmata.
    iv. symplast and transmembrane route are in living part of the cell

    (a)

    i and ii

    (b)

    ii and iii

    (c)

    iii and iv

    (d)

    i, ii, iii, iv

  50. For every CO2 molecule entering the C3 cycle, the number of ATP & NADPH required

    (a)

    2ATP + 2NADPH

    (b)

    2ATP + 3NADPH

    (c)

    3ATP + 2NADPH

    (d)

    3ATP + 3NADPH

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