Gymnosperms Flashcards
1
Q
Characteristics of gymnosperms?
A
Naked seeds (no protective covering)
Have vascular tissue (xylem, phloem)
Do not produce flowers or fruit
Pollinated by wind (pollen lands on female cones)
2
Q
Uses of gymnosperms?
A
Remove CO2 and add O2 to atmosphere Food and shelter for animals Control flooding by absorbing water Provide 85% of all wood in building or furniture Medicines
3
Q
Functions of bark?
A
Protects against fire, animals eating them
4
Q
Function of stem?
A
Elevates the gymnosperm for better access to light, sperm
5
Q
What is the function of leaves/needles?
A
Retain water, stay on year round
6
Q
What is meiosis (conifers)?
A
Organism has a set of 2 chromosomes (2n), and splits into two sets of 1 chromosome (2x1n)
7
Q
How do conifers prevent dehydration?
A
Cuticle (waxy coating) on the conifer, and stomata to keep water from leaking
