--%>
Assignment Help - homework help

Fecundation in angiosperms

After the pollination, explain how does the fecundation takes place within the angiosperms and whether fecundation depends upon the water?

E

Expert

Verified

After the pollination, one of sperm nuclei from the pollen tube joins the oosphere of embryonic sac making the diploid (2n) zygote. Other sperm nucleus fuses along with the polar nuclei of embryonic sac developing a triploid (3n) cell which through the mitosis will turn in the secondary endosperm of the seed. The antipodal cells and the synergids degenerate after the fecundation process completes. Fecundation within these plants is independent from the water.

   Related Questions in Biology

  • Q : Immunization against antigen How

    How organism which had once undergone contact with an antigen can be immunized against the future infections by the same agent?

    		•
  • Q : Perceptual Process and Modification

    Although personality tends to be consistent and enduring, it may still change under certain circumstances. For instance, an individual's personality may be altered by major life events, such as the birth of a child, the death of a loved one, a divorce, or a major career promotion.

    		•
  • Q : What do you mean by blind spot What do

    What do you mean by blind spot? Illustrate.

    		•
  • Q : Denaturalizing a protein What are the

    What are the limitations and precautions of De naturalizing proteins

    		•
  • Q : Describe Database Administration

    Database Administration: It is a job whose primary function is the general support of a computer database. Such support tasks are executed by a person termed as a database administrator, or DBA. Databases need constant management and up-keep, and a DB

    		•
  • Q : Other means for transport of substances

    What is the other means for transport of substances in animals devoid of a circulatory system? Why is blood significant for bigger animals?

    		•
  • Q : What is Phenyl ketonuria Phenyl

    Phenyl ketonuria is autosomal recessive metabolic genetic disorder characterised by the mutation in the gene of hepatic enzyme phenylalanine hydroxylase,which is an important enzyme to metabolize phenylalanine and tyrosine.Mutation in this gene causes

    		•
  • Q : What is heat of Combustion What is heat

    What is heat of Combustion?

    		•
  • Q : Cytoplasmic inclusions Briefly define

    Briefly define cytoplasmic inclusions?

    		•
  • Q : How kidney contribute in regulation of

    How do kidneys contribute in the regulation of acid-basic equilibrium of the body? How are acidosis and alkalosis correspondingly corrected by the kidneys?

    		•