6.3 pendebungaan dan persenyawaan
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Biology
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Professional Development
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zainida zulkifli
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10 questions
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1.
FILL IN THE BLANK QUESTION
1 min • 1 pt
Pendebungaan ialah proses di mana debunga matang dipindahkan dari ..................... ke stigma.
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Berapakah jenis pendebungaan tumbuhan?
1
2
3
4
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Apakah jenis pendebungaan yang ditunjukkan dalam rajah?
Pendebungaan aseks
Pendebungaan sendiri
Pendebungaan seks
Pendebungaan kacuk
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Apakah jenis pendebungaan yang ditunjukkan dalam rajah?
Pendebungaan aseks
Pendebungaan sendiri
Pendebungaan seks
Pendebungaan kacuk
5.
MULTIPLE SELECT QUESTION
45 sec • 1 pt
Antara berikut yang manakah agen pendebungaan?
Tanah
Angin
Serangga
Mikroorganisma
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Apakah yang berlaku yang ditunjukkan dalam rajah semasa pendebungaan?
Debunga yang telah dipindahkan ke stigma akan mengalami percambahan dan membentuk tiub debunga. Tiub debunga
memanjang dan tumbuh ke arah ovul melalui stil.
Nukleus penjana akan bergerak di sepanjang tiub debunga ke arah ovul. Pada masa yang sama, nukleus penjana akan membahagi secara mitosis untuk membentuk dua gamet jantan (n).
Dinding anter pada debunga yang matang akan mengering, mengecut dan merekah.
Debunga di dalam pundi debunga akan dibebaskan.
Tiub debunga akan menembusi ovul melalui mikropil. Nukleus tiub akan merosot dan kedua-dua gamet jantan masuk ke dalam pundi embrio.
7.
FILL IN THE BLANK QUESTION
1 min • 1 pt
Persenyawaan ganda ................. melibatkan dua sel gamet jantan, iaitu gamet jantan yang pertama mensenyawakan sel telur untuk menghasilkan zigot yang diploid manakala gamet jantan kedua bercantum dengan nukleus kutub untuk menghasilkan tisu endosperma yang triploid
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