Final Flashcards
(280 cards)
What are seed plants?
Angiosperms
When did flowering plants first appear? What period?
160 million years ago during the late Jurassic period
What did most botanists hypothesize about primitive flowers?
That they had numerous spirally-arranged parts that weren’t fused
What makes angiosperms different from gymnosperms?
The angiosperm seeds are contained in a structure
What is the structure where seeds are contained called?
Carpel
What is the largest and most diverse phylum of the Plant Kingdom?
Angiosperms
Are angiosperms heterosporous or homosporous?
Hereosporous
Describe a female gametophyte
Wholly enclosed within sporophyte tissue and are reduced to only few cells
Describe a male gametophyte
Consist of a germinated pollen grain with three nuclei
Give an example of a compound carpel
Tomato, thinner pericarp several ovules
Give an example of a simple carpel
Avocado, thicker pericarp, one ovule
What is pollination?
The transfer of pollen grains from an anther to a stigma
What is fertilization?
The union of an egg and sperm
How long can fertilization take place after pollination?
Days, weeks, or months after
What color flowers do birds often visit? Smell?
Bright red or yellow, very little odor
How do flowers ensure the return of bird-pollinators?
The produce copious amounts of nectar
What kind of flowers do bats visit?
Ones that open at night
What is a herbaria?
Libraries of dried, pressed plants, algae, fungi arranged and labeled
How long can a properly prepared specimen remain in excellent condition?
300+ years
What is special about wild ginger?
The flower is located at the base of the plant
What does an embryonic primordium develop into?
A bud
What is another name for sepals?
Calyx
What is another name for petals?
Corolla
What are the calyx and corolla together called?
Perianth