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All important topics in angiosperm reproduction is summarized.
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Reproduction in flowering plants
A- sexual reproduction
→
1 parent
Offspring identical genes to
→
=
parent
↳ clones of parent
→
No gametes
→
Mitosis occurs
Advantages : .
large # of offspring produced quickly .
Energy expenditure low
'
=
Offspring adapt easily to parents environment
•
.
Disadvantages :
-
No genetic variation : difficult to adapt to
changed environmental conditions .
Disease out
can
wipe offspring
•
Overpopulation competition T
•
:
Sexual reproduction
2 parents genetic material
→
combine
→
Gametes used
→
Meiosis occurs
→
Fertilization =
zygote
Advantages More variation adapt easier greater chance of survival
'
: = :
.
can result in speciation
i
'
chances of inheriting disease =
lower
Disadvantages Longer process
•
:
'
Fewer offspring
Energy expenditure higher
•
=
Negative mutations phenotype
-
=
Need agents to disperse pollen or seeds
-
.
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