double fertilisation

• when one male gamete fuses with the female gamete

  how is a diploid zygote produced
• they fuse with 2 polar bodies

  what happens to the second male gamete in order to form a triploid primary endosperm nucleus
• a triploid primary endosperm nucleus

  what is formed when the second male gamete fuses with two polar nuclei
• Antipodals


  what is A

  
• egg cell


  what is B

  
• synergids


  what is C

  
• polar nuclei


  what is D

  
• sperm (male gametes) from the stigma is entering the embryo sac

  What happens at E

  
• triploid primary Endosperm(3n)


  what is F ,how many nuclei are found

  
• zygote(2n)


  what is G , how many nuclei are found

  
• double fertilisation


  what does H show

  
• they both involve the fusing of haploid gametes to form a zygote,they both involve internal fertilization in the female and they both involve the secretion of digestive enzyme for the male gamete


  list three similarities between fertilisation in humans and fertilisation in plants
• in plants


  where can double fertilization take place
• no

  can double fertilisation take place in humans
• the acrosome reaction


  what is the human comparison of the formation of the pollen tube in plants