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11th Standard Botany English Medium Free Online Test One Mark Questions 2020

11th Standard

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Botany

Time : 00:20:00 Hrs
Total Marks : 20

    Answer all the questions

    20 x 1 = 20
  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. Sum total of constructive reactions is called as _____________

    (a)

    Anabolism

    (b)

    Catabolism

    (c)

    Metabolism

    (d)

    Embolism

  3. Founder of modern Bacteriology _________________

    (a)

    Koch

    (b)

    Griffith

    (c)

    Lederberg

    (d)

    Gram

  4. The organisms isolated from pleural fluid of cattle ______________

    (a)

    Actinomycetes

    (b)

    Virus

    (c)

    Phage

    (d)

    Mycoplasma

  5. Lysogenic cycle is also called as _________.

    (a)

    Avirulent cycle 

    (b)

    Virulent cycle

    (c)

    Lytic cycle

    (d)

     Regenerative cycle

  6. Colour revealed by Gram positive bacteria after Gram staining is _________ .

    (a)

    red

    (b)

    indigo

    (c)

    dark violet

    (d)

    blue

  7. Amylum stars, root bulbils and amorphous bulbils are the vegetative reproductive organs of:

    (a)

    Chara

    (b)

    Oedogonium

    (c)

    Selaginella

    (d)

    Pinus

  8. Transgenic plants are the ones:

    (a)

    grown in artificial medium, after hybridization in the field.

    (b)

    produced by a somatic embryo in artificial medium.

    (c)

    generated by introducing foreign DNA into a cell and regenerating a plant from that cell.

    (d)

    produced after protoplast fusion in artificial medium.

  9. Type of vegetative reproduction seen in ulothrix is

    (a)

    bulbils

    (b)

    fission

    (c)

    fragmentation

    (d)

    tubers

  10. Carrageenan is obtained from__________

    (a)

    Chlorella

    (b)

    Chara

    (c)

    Chondrus

    (d)

    Chlamydomonas

  11. Amber is obtained from____________  

    (a)

    Angiosperm

    (b)

    Gymnosperm

    (c)

    Pteridophytes

    (d)

    Bryophytes

  12. Which is not a cryptogam?

    (a)

    Algae

    (b)

    Bryophytes

    (c)

    Pteridophyta

    (d)

    Angiospermae

  13. Example for negatively geotropic roots

    (a)

    Ipomoea, Dahlia

    (b)

    Asparagus, Ruellia

    (c)

    Vitis, Portulaca

    (d)

    Avicennia, Rhizophora

  14. Multiple root cap is seen in ____

    (a)

    Lemna

    (b)

    Pistia

    (c)

    Pandanus

    (d)

    Rhizophora

  15. Aestivation is the term used for

    (a)

    arrangement of flowers in inflorescence

    (b)

    arrangement of leaves in the stem

    (c)

    arrangement of sepals and petals in the flower bud

    (d)

    none of the above

  16. An inflorescence with shorter pedicellate flowers at the top ____________ .

    (a)

    Catkin

    (b)

    Spadix

    (c)

    Panicle

    (d)

    Corymb

  17. A flower contains only one of the essential whorls is called ______________.

    (a)

    Perfect flower

    (b)

    Imperfect flower

    (c)

    Staminate flowers

    (d)

    Hermaphroditic

  18. They develop from single ovary where the pericarp dry.

    (a)

    Hesperidium

    (b)

    Pome

    (c)

    Balausta

    (d)

    Dry Fruit

  19. Centromere is required for

    (a)

    transcription

    (b)

    crossing over

    (c)

    cytoplasmic cleavage

    (d)

    movement of Chromosome towards pole

  20. What type of transpiration is possible in the xerophyte Opuntia?

    (a)

    Stomatal

    (b)

    Lenticular

    (c)

    Cuticular

    (d)

    All the above

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