Multiple Choice Questions

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Number of chromosomes in an angiospermic plant is 14, then the number of chromosomes in synergid cells will be

  • 14

  • 7

  • 28

  • 21


B.

7

The number of chromosomes in root cells is 2n while it is n in synergids because it develops by reductional division.

Therefore, the number of chromosomes in synergid cells is 7.


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What happened when we inoculated Rhizobium in wheat field?

  • No increase in production (nitrogen content of soil remains same)

  • A lot of increase in production (nitrogen content of soil increases)

  • Fertility of soil decreases

  • Fertility of soil increases


Which of the following plant is LDP?

  • Xanthium

  • Soybean

  • Wheat

  • Tobacco


Meristematic tissue in vascular bundle is

  • phellem

  • procambium

  • interfascicular cambium

  • fascicular cambium


Male gamete in angiosperm is produced by

  • generative cell

  • microspore cell

  • vegetative cell

  • tube cell


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Systema Naturae was written by

  • Linnaeus

  • Aristotle

  • Hippocrates

  • Darwin


Phytochrome is present in

  • vascular cryptogam

  • prokaryotes

  • flowering plants

  • algae


The mineral present in cell wall is

  • Na

  • Ca

  • K

  • Mg


Which organelle is present in higher number in secretory cells?

  • Dictyosome

  • ER

  • Lysosome

  • Vacuole


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Vessels and companion cells are found in

  • angiosperm

  • pteridophytes

  • bryophytes

  • thallophytes