Asexual & Sexual reproduction Flashcards
Asexual reproduction
Asexual reproduction is when an organism produces offspring identical to itself without a partner.
different types of asexual reproduction?
Parthenogenesis Budding Binary fission Fragmentation Spores:
Spores:
When a spore is released from the parent organism are carried by the wind then settle and reproduce as a seed.
Fragmentation:
This is when a piece of the parent organism breaks off forming a new organism
Binary fission
Occurs the parent cell splits into two equal identical daughter cells.
Budding:
When an organism grows off the side of the parent organism.
Parthenogenesis:
occurs when an unfertilized egg develops into an embryo
advantages of asexual reproduction
Takes less time and energy
Easy dispersal
Only requires one parent
-more offspring(additional answer)
disadvantages of asexual reproduction
Dangerous mutations in DNA
Less chance of survival
No variation of offspring
sexual reproduction
Sexual reproduction is when the sperm meets the egg to produce genetically unique offspring.
gametes
Gametes are sex cells eg. sperm and ovum
fertilization
Fertilization is when the sperm unites with the egg.
zygote
A zygote is a fertilsied egg
internal fertilization
nternal fertilization is when sperm meets the egg inside the female’s body.
external fertilization
External fertilisation is when sperm meets the egg outside the female’s body.
hermaphrodites
Hermaphyrdoties are organisms with both female and male reproductive systems
advantages of sexual reproduction
- Variation in offspring
- Greater chance of survival
- A disease is less likely to wipe out a whole species
disadvantages of sexual reproduction
- Need to search for a mate
- Takes more time and energy
- Organisms take time to grow
Example of parthenongensis
Honey bee
Example of budding
yeast
Example of spore
Flower seed
Example of binary fission
bacteria like coli
Example of fragmentation
starfish
