Which of the following is characteristic of all seed plants?
1. They have seeds enclosed and protected in fruits.
2. They do not have alternation of generations in their life cycle.
3. The male gametophyte is reduced to a structure called a pollen grain.
4. They produce flowers that are pollinated by certain animals.
3- the male gametophyte is reduced to a structure called a pollen grain
Thanks.
HAIL HYDRA!
The characteristic of all seed plants can be determined by analyzing each option provided.
1. They have seeds enclosed and protected in fruits: This characteristic applies to angiosperms, which are a type of seed plant also known as flowering plants. Angiosperms have seeds contained within fruits, such as apples or oranges. However, not all seed plants have fruits, so this option is not characteristic of all seed plants.
2. They do not have alternation of generations in their life cycle: This statement is incorrect. Seed plants, including gymnosperms and angiosperms, do exhibit alternation of generations in their life cycle. This cycle involves the alternation between a sporophyte generation (producing spores) and a gametophyte generation (producing gametes).
3. The male gametophyte is reduced to a structure called a pollen grain: This characteristic is true for all seed plants. Pollen grains contain the male gametes (sperm cells) and are produced by the male reproductive structures of seed plants.
4. They produce flowers that are pollinated by certain animals: This characteristic is only applicable to angiosperms, which have evolved flowers for the purpose of attracting pollinators like insects, birds, or bats. Gymnosperms, another type of seed plant, do not typically produce flowers.
Based on the analysis above, option 3, "The male gametophyte is reduced to a structure called a pollen grain," is the characteristic of all seed plants.
The parts of a flower are so constructive that
Very, very often the wind will cause pollination.
If not, then a bee or any other nectar
Gathering creature can create the same situation.
Yes, anything that gets the pollen
To the pistils, write it on the list.
I'll try to make it crystal-clear:
The flower's insatiable passion turns
It's life into a circus of debauchery!
Now you see just how the stamen gets it's lusty dust onto the stigma.
And why this frenzied
Chlorophyllous orgy starts in spring is no enigma!
We call this quest for satisfaction a what, class?
A- photo-periodic reaction!
Oh, that's good, oh that's very good.
Hey, I'm lost where are we? Chapter 2, page 5...
Reproduction, reproduction!
Put your pollen tube to work.
Reproduction, reproduction!
Make my stamen go berserk.
Reproduction!
I don't think they even know what a pistil is!
I got your pistil right here...
Where does the pollen go?
Next chapter, In an abstract way, the same thing applies
To the reproductive organs of the more complex life forms.
But now we are dealing with sexual response.
Are there any questions before we begin reading?
Is it possible the female member of some sex on a couch
Could like get this guy all hot and she never even knew it?
When a warm-blooded mammal in a tight little sweater
Starts pullin' that stuff, is she sayin' that she wants to do it?
Can't prove it by me, cause they change their tune
When you got 'em in the back seat.
With his heart beatin' fast!
They make it sound like a track meet, gross!
Yeah, then all they can do is say
"No, no, no, no, no, no, no, no, no!"
Reproduction, reproduction!
Baby, give it to me now.
Reproduction, reproduction!
Is that all you think about?
Reproduction!
Come on baby show me that you really love me so!
Ohhh, I think I'm gonna throw up! Where does the pollen go?
The human is the only being capable of
Consciously controlling it's number of offspring.
Any comments on this?
Mr. Stuart, is it true that guys like you, you know, mature and all,
Carry some protection with them for sexual occasions
What's the big deal? Can't a girl just do that thing in a book
Where she adds up the days of her,
Uh, what do you call it, mentalstration?
Oh, that's really neat! Yeah,
And what'll the guy say when the numbers don't add up right, huh?
Yeah, yeah, yeah!
Reproduction, reproduction!
Hope he's proud of what he's done.
Reproduction, reproduction!
He was only pokin' fun.
Reproduction!
See what happens when a boy and girl don't know how to play it safe?
Reproduction, reproduction!
Reproduction, reproduction!
Reproduction, reproduction!
Reproduction!
Where does the pollen go?