Spermatophyte Flashcards

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1
Q

What two Phyla make up the spermatophyte

A

gymnosperms andangiosperms

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2
Q

What are some basic characteristics for a Gymnosperm

A

flowers areabsent –all seeds, therefore, form externallyand not in the fruit.

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3
Q

What is the difference between female and male cones

A

Female cones arelargerthan male conesand are usually located much higher up in a tree. Female cones containovuleswhereas male cones containpollen.

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4
Q

What makes Angiosperm the most successful Phyla

A

their ability to produce flowers which attract pollinators. They also have ahighlyevolved

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5
Q

What do each part of an Angiosperm do

A
  • Petals: Collectively called thecorolla, are usually bright in colour to attract pollinators such as birds and bees.
  • Stamen: The male part of the flower that consists of an anther and a filament.
  • Theanthercontains the male gametes in pollen grains.
  • Thefilamentis a supportive structure that holds the anther in an upright position.
  • Sepals: Collectively called thecalyx, which is the green leaves at the base of a flower that offers protection to a newly formed, budding flower.
  • Carpel: The female part of the flower that consists of a stigma, style, ovule and ovary.
  • Thestigmais a sticky, receptive structure that receives pollen from the anther of the flower.
  • Thestyleis a supportive structure that holds the stigma in an upright position.
  • Theovuleis a structure that holds the female gametes and develops into aseedafter fertilisation.
  • Theovaryis a structure that contains the ovule and that becomes thefruitafter fertilisation.
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