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  • During the development of embryo in angiosperms, the suspensor cell is derived fromOption: 1 Basal cell

During the development of embryo in angiosperms, the suspensor cell is derived from

Option: 1

Basal cell


Option: 2

Terminal cell


Option: 3

Coleoptile


Option: 4

Coleorhiza


Answers (1)

best_answer

As we have learnt -

Embryogeny in Monocots:

  • The zygote elongates and then divides trans­versely to form basal and terminal cells. 
  • The basal cell (towards the micropylar end) produces a large swollen, vesicular suspensor cell. It may function as haustorium. 
  • The terminal cell divides by another transverse wall to form two cells.
  • The top cell after a series of divisions forms plumule and a single cotyledon. 
  • Cotyledon called scutellum grows rapidly and pushes the terminal plumule to one side.
  • The plumule comes to lie in a depression.
  • The middle cell, after many divisions, forms hypocotyl and radicle. It also adds a few cells to the suspensor. 
  • In some cereals both plumule and radicle get covered by sheaths developed from scutellum called coleoptile and coleorhiza respectively.

-Wherein, 

  • The zygote elongates and divides trans­versely to form basal and terminal cells. 
  • The basal cell (towards the micropylar end) produces a large swollen, vesicular suspensor cell.

Hence, the correct answer is option a.

Posted by

Gaurav

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