Fertilisation and Seed Formation
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- Опубликовано: 5 сен 2024
- FREE IGCSE BIOLOGY PRACTICE QUESTIONS
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SUMMARY:
Fertilisation is the fusion of the male gamete with the female gamete to form a zygote. In flowering plants, the male gametes are found in pollen grains, produced in the anthers, while the female gametes are found in the ovules.
Pollen must first travel from an anther to the stigma in a process called pollination. When a pollen grain lands on the stigma, it forms a pollen tube down the style of the flower. The pollen grain’s nucleus travels down the pollen tube as it grows towards the ovary and the ovule. The pollen tube reaches a tiny opening in the ovule, and then the tip of the pollen tube dissolves allowing the pollen nucleus to enter the ovule. Here, the pollen nucleus fuses with the egg cell nucleus. This fusion of the two nuclei is fertilisation. Fertilisation creates a new cell, called a zygote.
The single zygote cell divides and develops to become a plant embryo which has a plumule and a radicle. The plumule will go on to become the first shoot of the plant while the radicle will become the first root. The remaining contents of the ovule develop into cotyledons which act as a food store for the new plant. Seeds need their own food store for the earliest stage of growth because no food is produced by photosynthesis until leaves develop. Surrounding the seed is a seed coat, a protective layer which forms from the ovary wall.
To all the girls out there before there biology exam, good luck sis
Thanks love
👍✨️
Thxxx
🫣👌🏻
Thanksss
To all the boys out there before their biology exam, good luck bro
thanks dawg
Tq bro
Thx bro
Thanks man, we are in this together
Thx man and I got full marks
I believe videos are the best way to learn something efficiently and fast too. This further proves my point.
this guy deserves more views
Mahad sa2al ya monkey
Yes like 1000000000000000000
@@SubToGamerNub99thats more than people on earth…
Not everyone studies online . Thats why views are low.
My curiosity about pollination led me to your videos, and I'm so glad I did! They're all amazing, and I especially appreciate how you make the science simple and enjoyable to watch. I've learned so much that I never even thought about before.
I am from India. I am very thankful to you for helping in my science final exams
I found this channel the day before my Biology exam, I wish I found it earlier! Hoping this can secure me a 9 :)
Good luck! Hope it goes well.
Same :)
@@ahmetleventtakr7625 L reply
From India 🇮🇳 . Great work!
Samr here😂
I just learned something new. I never knew there were males and female relations when it comes to seed, but I see where it all make scene (in science)
i find science sauce videos are very clear ,concise and easy to understand. full marks.
Thanks!
I agree!
Me too
People be talking abt their biology exams and ma teacher be sending me this(whos with me?)
Bro just destroyed my biology notes 😂
thansk"s for sharing it is good to remember about Natural Science I had learnt in Secondary school
Wonderful presentation. Very clearly explained!
That's great continue guiding me know what is biology
I am from Bangladesh .I have a request.If you talk slowly we will be able to understand your language nicely.
slow down the video genius
I really appreciate your explanation bro it's really easy to understand ☺️☺️ l loved it ❤❤
Biology is now my favorite 😫❤
Very well explained. Thank you
I am here for my science exams, thank you so much
Clear and simple. This is excellent stuff. Keep up the good work!
ok
Another brilliant video.
Does this apply to ALL seeds, like sunflowers, oranges, potatoes, etc?
Excellent explanation
Nice explanation 😊😊
great video just 1 small thing to complain about, i dont really appreciate having to hear you take a breath before every sentence ❤
From Bangladesh 🇧🇩
Keep going up, boss. Your videos help me a lot to understand the basic.
I expect advanced topic from you. ❤️❤️
Wow... impressive you are indeed good at teaching 🔥🔥💖
Thanks!
@@Science_Sauce L bozo
@@Mr.pie6000 Lol ur toxic
True 💯
I swear science wasn't hard these days
WHY IS IT LIKE THE EXACT SAME AS HUMANS??
Bc God created both ❤️
Jesus loves you!
شكراً❤
Hello science sauce, please help me. What is the difference between seed formation and seed development? I am really struggling now to understand that.
Excellently made video, but you didn't talk about the fact that pollen as two sperm cells as well as a vegetative cell, or the fact that ovules are made up of 8 embryonic cells and that both the egg and the endosperm are fertilised to make a seed. Good video for the fundamentals but I would have looks some more detail! Anyway, cheers.
Thanks buddy 💗
thank you, you are a very clear and easily understandable youtube. thanks a lot
This literally just saved me
Thank you soo much you cleared my all dounts 🙏🙏🙏🙏
Thank you so much for this video, it helped me a lot! I just wanted to ask, where does fertilisation take place in plants? Is it in the ovary or the ovule? I am known with the fact that it occurs in the ovary but I did some past questions online and some state it occurs in the ovules....?
To all the girls out their before their final biology exam,good luck material girls you can do it
Tho i cant like 😢 anyways gotta study v.v good presentation btw😊
didn't you mean the seed coat develops from OVULE wall? you said OVARY wall.
Thnx sm science sauce I 100% on my test💗💗💗
Well done!
It was a great help. 😊Thanku
good job on the video
Isnt the outer shell of the seed called seed coat? Correct me if im wrong❤
Not me casually watching this for a test tomorrow and need to hand in revision
Thank you for the summary
good luck for friday everyone!!!
You drawn the diagram wrong
Amazing ❤
thing is short and sweet as well good performance.
your outro singsong is good..
1:52 so what happens to the ovary of this plant (the one shown on the left)? Does the plant just die when that happens? Does the fruit just break the parts around it?? PLS RESPOND 😅😊
Thank you so much ❤
Thank.you.so.much
nice.
Who is here after pw bio class 🙋
Wow
Thanks
Good video
Fantastic
From India ❤ Indian
Yes
good
The pollen goes to the stigma
Bro really put the hill cart racing theme in the beginning☠️
So we have been eating ovaries.
I sense the humor lol
I love this video
hi to all the kids in the comments from my school reading the comments instead of watching the video
Tommorow is my exam 😭 my brain is ded💀
Insane
Mr smith
I have a test bruh
Ajj exam hai
Yea
These days bads getting more views
Any indian??
Im year 5 science not bioligy lol
Gg
Ga-Mi-te 💀💀