reproduction (sexual + asexual) Flashcards
1
Q
asexual reproduction
A
genetically identical offspring
2
Q
advantages of a.r
A
- mates not required
- rapid reproduction process
- positive genetic traits passed on
3
Q
disadvantages of a.r
A
- lack of diversity so susceptible to sam diseases as parent
- can’t adapt to environmental changes
4
Q
sexual reproduction
A
- involves fusion of two nuclei to form zygote
- genetically different offspring
5
Q
fertilisation
A
fusion of nuclei of two gametes
6
Q
nuclei of gametes are
A
haploid
7
Q
nucleus in zygote is
A
diploid
8
Q
advantages of s.r
A
- variation so can adapt and have higher survival chance
- new varieties can have resistance to diseases
- plants: seeds are produced which allow dispersal away from parent reducing competition
9
Q
disadvantages of s.r
A
- two parents usually needed
- growth of new plant to maturity from seed is slow