natural cloning in plants

Question 1

asexual reproduction

Answer 1

form of cloning

results in gen id clones produced by mitosis

Question 2

vegetation propagating

Answer 2

production of structures in an organism that can grow into new indivi-clones of the parent

Question 3

prennating organs

Answer 3

contain stored food from photo and can remain dormant in soil

Question 4

bulbs

Answer 4

onion
leaf bases swell w/stored food
buds from internally which form into new plants

Question 5

runners

Answer 5

strawberry

lateral stem, roots dev where runner touches ground

Question 6

rhizomes

Answer 6

marram grass
underground stem
buds dev to form new vertical shoots

Question 7

stem tubers

Answer 7

potato
tip of underground stem swollen to from tuber
buds no tuber dev to prod shoots

Question 8

ways of increasing plant numbers cheaply

Answer 8

splitting up bulbs and rhizomes

removing young plants from runners

Question 9

what do all the new cloned plants have in common

Answer 9

genetic characteristics as their parents

Question 10

example of a simple cloning techniwue

Answer 10

taking plant cuttings

Question 11

how to take plant cuttings

Answer 11

healthy shoot
cut at angle bw nodes
dip in rooting powder- auxin
place in soil, then add water
cover w/plastic bag

Question 12

advantages of propagation from cuttings

Answer 12

quicker than planting+cropping

guaranteed quality

Question 13

disadvantage of propagation form cuttings

Answer 13

lack of genetic variation in offspring- new disease easily wipe out as all =ly susep

Question 14

ways to increase success of cuttings

Answer 14

non-flowering stem
oblique cut in stem
hormone rooting powder
reduce leaves to 2/4
keep cutting well water
cover cutting w/plastic bag 4 few days

Question 15

keep cuttings watered-
reduced leaves-
cover plastic bag-

Answer 15

minimise water loss
avoid water stress
minimise transpiration

Question 16

cut at angle

Answer 16

max SA 4 rootong powder

Question 17

non-flowering

Answer 17

all resources available 4 growing root

Question 18

rooting powder

Answer 18

seems to work

Question 19

why are cuttings useful for investigating the effect of growing conditions on plants

Answer 19

Cuttings are genetically identical so differences in rate of growth/ time to flowering down to
differences in conditions they are given

Question 20

advantages of cloning plants

Answer 20

quick
alternative if sexual reproduction is not possible
all clones inherit the same desirable characteristic

Question 21

disadvantages of cloning plants

Answer 21

no genetic variation- no natural selection

if new disease arises whole pop will be wiped out as all =ly susceptible