Multiple Choice Questions

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Which is present in vascular bundle ofPinus?

  • Tracheids

  • Vessels

  • Companion cells

  • All of the above


A.

Tracheids

Tracheids are present in the phloem of all gymnosperms like Cycas, Pinus, etc. These are elongated cells in the xylem of vascular plants that serve in the transport of water and mineral salts.


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Water is not necessary for the fertilisation of

  • algae

  • bryophyta

  • Cycas

  • None of these


Respiratory roots (pneumatophores) are present in

  • mesophytes

  • halophytes

  • xerophytes

  • None of these


In algae, the bacteriological filter is

  • Oscillatoria

  • Batrachospermum

  • Nostoc

  • Cosmarium


This place in India is called 'The Golden Mine of Liverworts'

  • Eastern Himalayas

  • Western Himalayas

  • Western Ghats

  • Eastern Ghats


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Which one of the following pairs of plants are not seed producers?

  • Fern and Funaria

  • Funaria and Ficus

  • Ficus and Pinus

  • All of the above


In Pinus

  • seed is winged but pollen grains are not

  • both seed and pollen grains are wingless

  • pollen grains are winged but seed is not

  • both seeds and pollen grains are winged


One of the set is wrongly matched

  • Chrysanthemum - Sucker

  • Garlic  - Cloves

  • Cyanodon - Stolon

  • None of the above


The naked seeded plants are the

  • gymnosperms

  • monocots

  • dicots

  • All of these


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Desert can be converted into green land by planting

  • oxylophytes

  • psammophytes

  • halophytes

  • trees


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