Asexual and Sexual Reproduction

Question 1

what is asexual reproduction

Answer 1

invovllves one parents (single organism) making a copy of itself with exactly the same genetic code (clone) e.g. spider plants, straberries, potatoes

Question 2

WHat are the trhee types of asexual reproduction

Answer 2

budding, fission, parthogenisis

Question 3

explain budding with eg

Answer 3

a new organism develops from an outgrowth or bud due to cell division at one particular site e,g hydra plant

Question 4

explain fission with eg

Answer 4

organism splits and grows (planarian, starfish)

Question 5

explain parthogenesis with eg

Answer 5

reproduction from an ovum without fertilization e,g, lower plants, invertebrates, fleas, scorpions, wasps

Question 6

what is sexual reproduction and whhy is it important

Answer 6

involves two parents producing sex cells (gametes)

occurs when egg is fertilised by sperm because it creates genetic diversity and therefore allows us to evolve

Question 7

what is fertilization

Answer 7

fusion of egg and sperm cells to produce an embyro

Question 8

what is pollination

Answer 8

sexual reproduction in flowering plants where a male and female sex cells to produce and offspring

Question 9

describe the 2 advantages and 3 disadvantage of asexual

Answer 9

advantage
 - fast
- only one parent needed
disadvantage
 - little variation
-harder for adaptation
- easily effected by disease or environmental change

Question 10

describe the 3 advantages and 4disadvantage of sexual

Answer 10

advantage
-removies harmful mutations from population
-variation
unique individuals
disadvantage
-2 organisms required
-slower repro rate
-more energy required
-fewer offspring produced