B13.3 The best of both worlds Flashcards
How many parents are need in asexual reproduction?
Only 1 parents is needed - this is time and energy efficient as there is no need to find a mate or spread gametes this means it is faster than asexual reproduction
When is asexual reproduction disadvantaged?
If the environment changes it is a disadvantage - if one organism cannot survive none can due to them being genetically identical clones
How many parents are need for sexual reproduction?
2 parents or 2 gametes are needed and it takes time and energy to spread gametes
It is often slower than asexual reproduction
What are the advantages of sexual reproduction?
Produces variation in the offspring
What is natural selection?
The variation can give a survival advantage as some offspring will be able to survive and reproduce
What is the purpose of increasing the amount of asexual reproduction in the agriculture industry?
Increase food production
What is the purpose of speeding up natural slection?
To increase food production
What is the most common form of reproduction in fungi?
It is asexual
What are hyphae?
Thin threads that make up the fungi and hold the structures we can see
How are the fungal spores produced?
By mitosis and they are genetically idenitcal to the plant
How do fungi reproduce?
By using spores which they release into the environment
Spores germinate and undergo mitosis to form a fungi
When do fungi undergo sexual reproduction?
When it is dry - 2 hyphae from different fungi join and the nuclei fuse - it undergoes meiosis to make haploid spores - which are different from the original hyphae and then they germinate to form new fungus then by mitosis to produce the fungi
What are the sexual organs in plants?
The flower
What are the gametes in plants?
The pollen and egg cells - which are produced by meiosis
How does reproduction happen in plants?
The pollen from one flower must reach the female parts of another flower in a process called pollination