Plant Biodiversity Flashcards
1
Q
Bryophyta : Moss plant
Structure and characteristics
A
- no vascular tissue
- rhizoids
- thallus structure
- dependent on water
2
Q
How do Bryophytes reproduce?
A
- Under wet conditions sperm swims to the ova.
- A zygote grows on top of the female branch to produce sporophyte
- spores produce in the capsule
- spores are released when the calyptra breaks off
3
Q
Pteridophytes : ferns
Structure and characteristics
A
- true roots
- vascular tissue
- dependent on water
- asexual reproduction
4
Q
How do pteridophyes reproduce?
A
- sorry produce spores
- when spores mature , sporangia snap and fling out spores
- spores dispersed by wind
- germinate when they land in moist habitat
- spore grows into -> prothallus
- sperm swim to ova in water
5
Q
What are spermatophytes
A
- seed bearing plants
- ## most highly advanced group of plants
6
Q
Gymnosperms : pine cone
A
- true roots
- vascular tissue
- water independent
- reproduce sexually
7
Q
How do gymnosperms reproduce?
A
- A male gamete fuses with an ovum to form a zygote.
- zygote forms into an embryo
8
Q
Angiosperms : flowers
A
- vascular tissue
- water dependent
- true roots
9
Q
How do angiosperms reproduce?
A
- Anthers (male) produce pollen grains
- pollen grains are transferred by pollinators to the stigma (female)
- zygote forms into embryo
- ovary develops into fruit
