Final Review Flashcards
(13 cards)
1
Q
What are the main crop foods?
A
-wheat, rice, corn
2
Q
Why are bryophytes useful in medicine?
A
- some bryophtyes have antioxidant and antimicrobial properties
3
Q
Describe marchantias branching and sexual orientation?
A
- dichotomously branched and unisexual
4
Q
What plant is the resurrection plant?
A
- the spike moss is the resurrection plant
5
Q
what species are the ginkgos?
A
- only one living member: ginkgo biloba (AKA maiden hair)
- has antioxidant and medicinal properties
6
Q
Do ferns require dry or wet conditions for dispersal?
A
dry: think annulus, when it dries it snaps back and spreads the spores
7
Q
what are the two classes pop psilotopsida?
A
- ophiogossales and psilotales
- psilotales has nations, homosporous bisexual, gametophyte is small underground
- tmesipteris grows as an epiphytes
8
Q
How does the microspore land on the stigma?
A
- the megasporangium produces a droplet of liquid which catches the pollen
- as it evaporates the pollen is brought to the micropyle
9
Q
what are the four ferns of interest?
A
- liquorice fern: medicinal properties, tea
- ostrich fern: fiddle heads: one of the few edible parts of the fern
- brake fern: absorbs arsenic from the soil
- azolla: mutualistic relationship with cyanobacteria
10
Q
when did cycads develop?
A
The permian period: the age of cycads and dinosaurs
11
Q
When did angiosperms develop?
A
- cretaceous period: although most have developed in the last 50 million years
12
Q
How is beer created?
A
- the barley seeds are germinated at an optimal temperature for the production of hydrolytic enzymes by the aleurone layer
13
Q
Describe the flower types of angiosperms pollinated by specific pollinators
A
- beetles: no nectar guides,
bees: nectar guides, landing platform - moth: closed at night, smells sweet, no nectar guides
- butterfly: tubular, landing grip
- hummingbird: no landing pad, no odour, copious nectar production
wind: copious pollen production
wasps: mimic scent of wasps
