1.

Write a brief account of the structure of the ovule of angiosperms.

Answer»
  • A mature ovule of angiosperms is almost oval and has the following parts.
  • The body of the ovule is called the nucellus.
  • It remains covered by two integuments. 
  • These arise from the base of the ovule. 
  • At the free end of the ovule, the integuments are incomplete and so there is a minute opening called micropyle. 
  • The stalk of the ovule is called as funicle. 
  • The point of attachment of the body of an ovule with the stalk is called hilum. 
  • The base of the ovule from where integuments arise is called chalaza


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