Topic 7

• Ovules are enclosed in ovary
• flowers first bloomed in cretaceous period
• Archaefructus liaoningensis is the first fossil records for angiosperms
• accessory fruit - forms from flower parts other than the ovary
• pollen is produced in the anther
• mature embryo sac is polygonum type
• monoscporic development - develops from a single spore
• one sperm fuses with the egg to make a diploid zygote which is the sporophyte embryo
• other sperm fuses with polar nuclei to form primary endosperm nucleus
• Proboscis - tube like mouthpart used to suck up sweet fluids
• lacewing - pioneered the relationship between the rise of flowering plants
• flase blister beetles - crossover stars of the second pollination revolution
• beetles carry the firet pollen grain from angiosperms