Multiple Choice Questions

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The interxylary phloem is found in the stem of

  • Cucurbita

  • Salvia

  • Calotropis

  • None of these


C.

Calotropis

Interxylary phloem is found in Calotropis stem. It is said to be interxylary due to its presence inside xylem. It is also found in the same member of family-Solanaceae.


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Which of the following supports a dense population of plankton and littoral vegetation?

  • Oligotrophic

  • Eutrophic

  • Lithotrophic

  • Agroecotrophic


In pteridophytes, phloem is without

  • bast fibers

  • Sieve tubes

  • Companion cells

  • Sieve cells


Lady finger belongs to family

  • Malvaceae

  • Cucurbitaceae

  • Brassicaceae

  • Liliaceae


Identify the wrong combination

  • Dryopteris → Rhizome

  • Cycas → Coralloid roots

  • Volvox → Colonial form

  • Marchantia →Pseudoelaters


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Wound healing is due to

  • Ventral Meristem

  • Secondary meristem

  • Primary meristem

  • All of these


Which one of the following is heterosporous?

  • Equisetum

  • Dryopteris

  • Salvinia

  • Adianturn


Which one is wrongly matched?

  • Uniflagellate gametes – Polysiphonia

  • Biflagellate zoospores – Brown algae

  • Unicellular organism – Chlorella

  • Gemma cups – Marchantia


 Fern spores are usually

  • Haploid

  • Diploid

  • Triploid

  • Tetraploid


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After karyogamy followed by meiosis, spores are produced exogenously in

  • Neurospora

  • Alternaria

  • Saccharomyces

  • Agaricus


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