reproduction in flowering plants

Question 1

what are the differences between sexual reproduction and asexual reproduction?

Answer 1

read table on page 56

Question 2

what are the similarities between sexual and asexual reproduction?

Answer 2

1. they produce the same kind of organism to prevent species from becoming extinct
2. result in food being produced to feed growing population

Question 3

what are the advantages of sexual reproduction?

Answer 3

1. results in variation
2. basis for evolution
3. gives organisms better chance of survival in unstable environment due to adaptation
4. prevents the spread of diseases because of genetic resistance
5. reduces chances pf inheriting a disease from a parent

Question 4

what are the advantages of asexual reproduction?

Answer 4

1. all individuals can produce
2. process is simpler and faster
3. its useful in a unchanging environment
4. favourable mutation can be rapidly spread

Question 5

what are the disadvantages of sexual reproduction

Answer 5

1. high energy expenditure
2. reproduction is slower due to gametes fusion
3. unfavourable mutations and recessive genes may be expressed
4. outside agents are needed

Question 6

what are the disadvantages of asexual reproduction?

Answer 6

1. no offspring variation

2. overcrowinding

Question 7

what are the male parts of a flower?

Answer 7

anther, filament, male gametes

Question 8

what are the female parts of a flower?

Answer 8

style,ovary,ovules and stigma

Question 9

keep going

Answer 9

my boy

Question 10

what is the function of the anther?

Answer 10

forms pollen grains where male gametes are found

Question 11

what is the function of the filament?

Answer 11

holds anther in a favorable position so pollen can be released

Question 12

what is the function of the stigma?

Answer 12

sticky surface for pollen to adhere to

Question 13

what is the function of the style?

Answer 13

joins stigma to ovary an holds stigma in the best position to receive pollen

Question 14

what id the function of the ovary?

Answer 14

to form ovules which matures into a a fruit

Question 15

what is the function of the ovule?

Answer 15

contains females gametes and forms a seed

Question 16

what is pollination?

Answer 16

the transfer of pollen from an anther to a stigma which enables feralization and reproduction

Question 17

what is feralization?

Answer 17

the joining of two haploid cells to form a diploid cell

Question 18

how has sexual reproduction led to improved crops ?

Answer 18

breeders selected seeds from superior plants which eliminates those with undesirable traits through cross pollination of individuals of a species

Question 19

how has asexual reproduction led to improved crops

Answer 19

1. propagation is faster because there is no gamete formation
2. all the propagated plants of a consistent
3. large quantities of plants can be produced
4. using grafting techniques grows fruits more an they reach maturity sooner

Question 20

how did genetic engineering techniques benefit food production give examples?

Answer 20

it has resulted in genetically modified organisms

example 1: BT maize a soil bacterium that kills pests, the gene of this protein has been transplanted into crops giving the maize crop resistance to that pest

example 2:round up soy beans

Question 21

that sexual reproduction is used in the production of new and improved varieties of food crops including polypoid

Answer 21

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