Question

Angiosperms do not need water for fertilization. Why?

Flagellated sperm travel to the ovary inside the pistil

Pollen stays inside the cone scales to fertilize eggs

A pollen tube grows from the pollen grain into the ovary

The sporophytes grow directly from the gametophytes

Answer 1

because reasons

Answer 2

thats the only things it has

Answer 3

this has to do with the male gametes (i.e. sperm cells) and how they get to point A (the male parts of a plant) to point B (the female parts). Once upon a time, all plants lived in water, so the sperm cells could just swim over and do their business. But angiosperms have conquered land, so they needed to develop a strategy that would allow them to safely transfer their gametes without water.

Answer 4

The pollen grains protect the gametophyte and gametes so they can safely travel through the air without drying out and dying, and then when the pollen lands on the female parts of a flower, the pollen tube grows out and transports the male gametes inside. That way, they don't have to swim.

Answer 5

Angiosperms do not need water for fertilization. cause
A pollen tube grows from the pollen grain into the ovary
i think

Answer 6

It's actually interesting to compare the sperm cells of really simple plants with more complicated ones. Mosses and ferns both have sperm cells with flagella, and if you see flagella on a sperm cell, you know right away that it probably uses them to swim, and you can't swim without water! Therefore, you know right away that mosses and ferns need water for fertilisation.

Different story with angiosperms and gymnosperms. There is actually one gymnosperm, Ginkgo, which still has flagellated sperm cells, but Ginkgo is a very old species, so the flagella are probably left over from a long time ago when they were needed. Other angiosperms and gymnosperms have sperm cells without flagella: flagella aren't needed because they have nowhere to swim. Instead, they need pollen tubes!

Answer 7

u bet me here prae cause i am stuck in math :)

Answer 8

THUS
A pollen tube grows from the pollen grain into the ovary

Answer 9

ewwww maths :/

Answer 10

well helping peeps

Answer 11

i got pulled over by cops today

Answer 12

yummm maths <3333

Answer 13

whyyyyy???

Answer 14

random drug test

Answer 15

lol they took one look at me and sent me on for further testing

Answer 16

bad boy PRAESSIE !

Answer 17

they said they were gonna be 5 mins
20 mins later they say i can go

Answer 18

i was freaking out lol, i had never been pulled over before

Answer 19

what did u do ?!?!

Answer 20

nothing its a random test thy do in Aussie

Answer 21

oh lol

Answer 22

then u need not to worry ;)

Answer 23

i dont now but at the time i was freaking out

Answer 24

yeah i would too probably :p

Answer 25

lol