Plant repoduction (sexual & asexual)

• The male part of a plant -stamen ,contuines the anther ,filament and sepal
• Two features of a pollinated plant is coulorful petals ,scent and nectary
• Pollination can be done by wind or insects
• Defention of fertilisation :union of male and female gametes to form a diploid zygote
• The female part of the plant -carpel includes the stigma ,style ,ovary ,ovule and nectary
• Anther consists of 4 chambers called pollen sacs
• Pollen grain divide by mitosis to form two haploid nuclei ,called tube nucleus and generative nucleus
• The tube necleus forms pollen tube ,then degenerates
• After the tube cells degenerates ,the generates cell divides by mitosis to produce 2 male gametes also known as sperm nuclei
• 2nd male gamete +2 polar nuclei = triple fusion
• Triple fusion is when the second male gamete fuses with the two polar nuclei