Asexual reproduction

Question 1

asexual reproduction

Answer 1

• offspring genetically identical to parent and each other
• requires only one parent
• mainly used by unicellular organisms

Question 2

advantages

Answer 2

• quick reproduction without partner, good for immobile organisms
• good for harsh environments where little benefit for variation
• less energy required to produce offspring, good during food shortages
• small mating population/no need to find mate

Question 3

disadvantages

Answer 3

• little to no variation, susceptible to sudden environmental selection pressures

Question 4

alternation of generations

Answer 4

mechanism that involves alternating between sexual and asexual reproduction
- sexual gamete-bearing generation alternating with asexual spore-bearing generation

Question 5

fungi can…

Answer 5

reproduce both sexually and asexually

Question 6

isogamous

Answer 6

gametes are similar, not classified as female or male
- undergoes isogamy, has a ‘charge’; positive and negative come together to reproduce
- fungi sexual reproduction

Question 7

spores

Answer 7

single-celled reproductive unit of non-flowering plants
- asexual, distributed through wind, water, other agents
- does not require another gamete
- used by fungi