Multiple Choice Questions

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Spliceosomes are not found in cells of

  • Plants

  • Animals

  • Fungi

  • Fungi


D.

Fungi

Spliceosomes are used in removal of introns during post-transcriptional processing of hnRNA in eukaryotes only as split genes are absent as prokaryotes.

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An example of colonial alga is

  • Chlorella

  • Volvox

  • Ulothrix

  • Ulothrix

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Viroids differ from viruses in having :

  • DNA molecules with protein coat

  • DNA molecules without protein coat

  • RNA molecules with protein coat

  • RNA molecules with protein coat

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Root hairs develop from the region of

  • Maturation

  • Elongation

  • Root cap

  • Root cap

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Which of the following represents order of 'Horse'?

  • Equidae

  • Perissodactyla

  • Caballus

  • Caballus

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Plants which produce characterstic pneumatophores and show vivipary belong to

  • Mesophytes

  • Halophytes

  • Psammophytes

  • Psammophytes

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Which of the following cell organelles is responsible for extracting energy from carbohydrates to form ATP?

  • Lysosome

  • Ribosome

  • Chloroplast

  • Chloroplast

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Which of the following facilitates opening of stomatal aperture?

  • Contraction of outer wall of guard cells

  • Decrease in turgidity of guard cells

  • Radial orientation of cellulose microfibrils in the cell wall of guard cells

  • Radial orientation of cellulose microfibrils in the cell wall of guard cells

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Select the mismatch

  • Pinus – Dioecious

  • Cycas – Dioecious

  • Salvinia – Heterosporous

  • Salvinia – Heterosporous

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Life cycle of Ectocarpus and Fucus respectively are

  • Haplontic, Diplontic

  • Diplontic, Haplodiplontic

  • Haplodiplontic, Diplontic

  • Haplodiplontic, Diplontic

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