Multiple Choice Questions

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After karyogamy followed by meiosis, spores are produced exogenously in

  • Neurospora

  • Alternaria

  • Saccharomyces

  • Agaricus


D.

Agaricus

  1. In Agaricus (a genus of basidiomycetes), basidiospores or meiospores are produced exogenously.
  2. Neurospora (a genus of ascomycetes) produces ascospores as meiospores but endogenously inside the ascus.)
  3. Alternaria (a genus of Deuteromycetes) does not produce sexual spores.
  4. Saccharomyces (Unicellular ascomycetes) produces ascospores, endogenously.

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Stomata in grass leaf are

  • Dumb-bell shaped

  • Kidney Shaped

  • Barrel shaped

  • Rectangular


The difference between spermiogenesis and spermiation is

  • In spermiogenesis spermatids are formed, while in spermiation spermatozoa are formed.

  • In spermiogenesis spermatozoa are formed, while in spermiation spermatids are formed.

  • In spermiogenesis spermatozoa are formed, while in spermiation spermatozoa are released from sertoli cells into the cavity of seminiferous tubules.

  • In spermiogenesis spermatozoa from sertoli cells are released into the cavity of seminiferous tubules, while in spermiation spermatozoa are formed.


Secondary xylem and phloem in dicot stem are produced by

  • Apical meristems

  • Vascular cambium

  • Axillary meristems

  • Phellogen


Select the wrong statement :

  • Cell wall is present in members of Fungi and Plantae

  • Mushrooms belong to Basidiomycetes

  • Mitochondria are the powerhouse of the cell in all kingdoms except Monera

  • Pseudopodia are locomotory and feeding structures in Sporozoans


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Plants having little or no secondary growth are

  • Grasses

  • Deciduous angiosperms

  • Cycads

  • Conifers


Which one is wrongly matched?

  • Uniflagellate gametes – Polysiphonia

  • Biflagellate zoospores – Brown algae

  • Unicellular organism – Chlorella

  • Gemma cups – Marchantia


Casparian strips occur in

  • Epidermis

  • Pericycle

  • Endodermis

  • Cortex


Sweet potato is a modified

  • Stem

  • Adventitious root

  • Rhizome

  • Tap root


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Pneumatophores occur in

  • Halophytes

  • Free-floating hydrophytes

  • Submerged hydrophytes

  • Carnivorous plants