sexual reproduction in the flowering plant

Question 1

another name for flowering plants

Answer 1

angiosperms

Question 2

where are the male gametes formed?

Answer 2

within the pollen grains found in the anther

Question 3

where are female gametes found?

Answer 3

found within embryo sacs found in the ovule

Question 4

what is pollination?

Answer 4

pollination occurs when pollen from an anther is deposited onto the stigma

Question 5

what is fertilization?

Answer 5

fertilization occurs when the male gametes from the pollen fuses with the female gametes in the ovary

Question 6

what are the two parts of the stamen?

Answer 6

the anther
filament

Question 7

function of the anther

Answer 7

contains male gametes with pollen grains

Question 8

function of the filament

Answer 8

to support the anther

Question 9

what are the three parts of the pistil?

Answer 9

stigma
style
ovary

Question 10

function of the stigma

Answer 10

captures pollen grains during pollination

Question 11

function of the style

Answer 11

supports the stigma

Question 12

function of the ovary

Answer 12

Contains female gametes, found in embryo sacs in ovules

Question 13

describe the structure of the anther

Answer 13

1. It is typically located at the tip of a slender stalk called the filament.
2. The anther is made up of fourchambers or sacs called microsporangia, which are the sites of pollen grain production
3. The anther is often covered by a protective layer called the tapetum

Question 14

describe the formation of pollen grains

Answer 14

occur when a POLLEN MOTHER CELL undergoes MEIOSIS to form a TETRAD of haploid cells called MICROSPORES. These then undergo MITOSIS to form two types of
nuclei within each, eventually maturing to form the protective walls of the pollen grain.

Question 15

fibrous layer

Answer 15

Thickened cellulose walls that eventually separates to release pollen grains.

Question 16

tapetum

Answer 16

Inner layer of pollen sac that provides nutrition to developing grains.
helps in the formation of the exine

Question 17

stomium

Answer 17

The point at which dehiscence occurs, to release the pollen grains.

Question 18

pollen mother cell/microsporocyte

Answer 18

undergoes meosis to provide 4 gamete nuclei

Question 19

what are the male parts of the flower?

Answer 19

fibrous layer
stomium
tapetum
pollen mother cell

Question 20

describe the structure of the pollen grain

Answer 20

it is made up of two walls - outer waterproof exine ( contains a polymer called sporopollenin) , a inner intine (usually containing enzymes), and two haploid nuclei call tube nucelus and generative nucelus

Question 21

what is the function of the generative nucleus?

Answer 21

undergoes mitosis to provide two male gamete nuclei

Question 22

function of the vegetative cell/tube nucleus

Answer 22

forms pollen tube

Question 23

function of the cytoplasm

Answer 23

This is the gel-like substance that fills the interior of the pollen grain and contains the male gametophyte

Question 24

microsporangia

Answer 24

sites of pollen grain production.

Question 25

what are the male gametophytes of flowering plants?

Answer 25

pollen grains

Question 26

what is the male reproductive organ?

Answer 26

stamen

Question 27

what are the two layers of the microsporangium

Answer 27

epidermis
endothecium

Question 28

function of the sporopollenin

Answer 28

helps protect the pollen grain from environmental stress

Question 29

what are the female parts of the flower?

Answer 29

funicle
integuments
antipodal cells
synergids
polar nuceli
micropyle

Question 30

where are the female gametes found?

Answer 30

in the embryo sac