Bio Test 3 Plant Sex

Front 1

size in nm of double eliz

Back 1

2nm

Front 2

a nucleosome contains

Back 2

nucleosome has 8 histone raped in dna

Front 3

steps in mitosis

Back 3

parent cell (2n_- prophase metaphase anaphase an two daugter cells each 2n.

Front 4

steps of meiosis

Back 4

parent cell that is 2n- phrophase I homologous chromosome pairs- metapase I- anaphaseI-telophase I- metaphase II four daughter cells each N

Front 5

name plant sex parts

Back 5

anther are on the top an dcontain microsporocyte- the lady parts are the ovary ovule- in more deep the megasporocyte (2n) and megasporangium-

Front 6

what is the main part of the seed

Back 6

endosperm nucleus (3n) and a zygote (2n)

Front 7

steps for growth of female parts

Back 7

surviving megaspore (n) leads to antipodal cells (3 of them) two polar nuclei , and egg and two synergids.

Front 8

how does pollen get to the egg

Back 8

through pollen tube the microgametophytes n-

Front 9

begining of megasspore mother cells

Back 9

go from a single megasporocye initially 2n and becomes 4n for meisis and ends in 4 cells 3 of whic degenerate then through mitosis of the n cell there are 8 haploid nuclei including the egg, antipodal , synergids, and 2 polar nuclei in the middle

Front 10

pollen tube compaired to pollen grain

Back 10

pollen tube is vastly long

Front 11

growing pollen tubes maintain a tip high in

Back 11

ca2+

Front 12

vesicle fusion always requires what

Back 12

lots of ca2+

Front 13

what happens after egg and sperm unite in plants

Back 13

the degenerating of synergid cells- and polar nuclei unite with sperm nucleus

Front 14

what is the first dvision of the zygote

Back 14

highly asymettric

Front 15

after a few divisions in a plant what forms

Back 15

embryo -the top cluster and th esuspender a long bit with a fat celled bottom

Front 16

what is the stage after suspender forms

Back 16

heart stage embryo forms looking like a heart with a suspender on the bottom

Front 17

after the heart stage what is the embryo called

Back 17

the torpedo-stage embryo

Front 18

what are the parts of the torpedo stage embryo

Back 18

cotyledons are the top bits, shoot apex is the center between the cotyledons, hypocotyl is the middle the root apex is the bottom with the suspensor anderything is surrounded by the seed cote

Front 19

what is gibberellic acid

Back 19

The release of nutrients from the endosperm requires the plant hormone, gibberellic acid , made by the cell it causes the cells of the aleurone layer to secrete a digestive enzyme called amylase, which breaks down starch to simple sugars.

Front 20

what is amylase

Back 20

brakes down simple sugars in seeds

Front 21

where does amylase get secreated from

Back 21

in the cell after the GA signal has been received cGMP is formed then triggers GA-MYB that attaches to the DNA to form amylase