IGCSE Biology
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Far out revision resources!
Thorax: Functions
Balanced diet: 2.24
Adaptations of a leaf: 2.20
Villi
Respiration and photosynthesis
Structure of the kidney
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Thursday, May 30, 2019
Hello again!
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Hello everyone! I've been away for a long time and I am glad to say I've graduated! I will be pursuing engineering soon. In the me...
2 comments:
Tuesday, April 4, 2017
3.5 Understand the conditions needed for seed germination
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Seeds require: Water Oxygen Warmth A good way to remeber this is "WOW" (I didn't come up with that, credit to another ...
3.4 Understand that the growth of the pollen tube followed by fertilisation leads to seed and fruit formation
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The pollen tube grows from the stigma, down through the style and into the ovary. This is where fertilisation occurs and it leads to the ...
3.3 Describe the structures of an insect-pollinated and a wind-pollinated flower and explain how each is adapted for pollination
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Figure 1.1 (source: Google Images) Insect pollinated flowers: Large, bright petals to attract insects Scented, often with nectar,...
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3.2 Understand that fertilisation involves the fusion of a male and female gamete to produce a zygote that undergoes cell division and develops into an embryo
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Fertilisation involves the fusion of a male and female gamete. In mammals, this is the sperm (male) and egg (female). This produces a zygote...
3.1 Understand the differences between sexual and asexual reproduction
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Asexual reproduction Involves no gametes and only one parent Produces genetically identical offspring ( clones ) Commonly happens in p...
Wednesday, February 22, 2017
5.18 Understand how micropropagation can be used to produce commercial quantities of identical plants (clones) with desirable characteristics
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Source: https://bam.files.bbci.co.uk/bam/live/content/zh6gd2p/large A tissue sample is taken from a 'parent plant' It is pla...
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