Hello, I'm afraid I am not familiar with that course. My videos are all linked to UK specifications, but primarily AQA. Hopefully it still fits well with other specs though as it is still Biology.
@@MissEstruchBiologyno worries , It fits but iam asking about the most well known curriculum biology IGCSE by Mary Jones and Geoff Jones for syllabus 0610 and 5090. I have the coursebook as pdf if you don't mind to check it.
For now I am just sticking to AQA. My plan is complete all AQA content and then phase 2 is to address some skills and exam technique videos. Realistically, it would be at least a year before I would be looking at other exam boards, sorry :( IGCSE does sound like a good second one to start on though!
Hello miss estruch, What is the fornula regarding the quadrat experiment, it started of with something like "mean no individuals per quadrat x .." something. i forgot it. I saw it be mentioned in a mark scheme aswell. Thank you.
Hi, I think what you are talking about is predicting population size? If so it would be the mean per quadrat multiplied by however many quadrats could fit (or the area) in the location. for example, if there were 10 ants in one 1m squared quadrat, and the garden could fit 10 quadrats then there would be 100 ants. hope this helps
Line transects are when you sample along a straight line. A belt transect is when you sample along that line using a quadrat, so it is a type of line transect. Hope that helps
@@MissEstruchBiology So in an exam question if it says, 'describe how you would investigate the distribution of marram grass from one side of the dune to the other' am I correct to say '1. create a belt transect from one side of the sand dune to another 2. place quadrats at regular intervals along the line 3. calculate percentage cover.
Belt transects are used if you are measuring changes in an area. For example, if you were measuring change in vegetation near the ocean, u would move inland along a belt transect.
local frequency is just a yes or no if any of the organism is in a small square. If the answer is yes that equals 1% per square. For peercentage cover, you only count it as 1% if at least half the small square is covered in the organism.
This was so helpful - have a topic 7.4 test tomorrow and this really helped me consolidate what I know so thank you!
Best of luck for your test tomorrow! So pleased it help you with your consolidation.
Thank you so so so much Miss!! This is such an amazing video with fluent explanation!!! Love it
!!!
You're so welcome! I'm glad you found the explanation helpful
Our Awesome ! teacher🌹
Thank you! 😃
@@MissEstruchBiology 👍 Need a new playlist for O level biology 0610..if you have a time ' don't mind.?
Hello,
I'm afraid I am not familiar with that course. My videos are all linked to UK specifications, but primarily AQA. Hopefully it still fits well with other specs though as it is still Biology.
@@MissEstruchBiologyno worries , It fits but iam asking about the most well known curriculum biology IGCSE by Mary Jones and Geoff Jones for syllabus 0610 and 5090.
I have the coursebook as pdf if you don't mind to check it.
For now I am just sticking to AQA. My plan is complete all AQA content and then phase 2 is to address some skills and exam technique videos.
Realistically, it would be at least a year before I would be looking at other exam boards, sorry :( IGCSE does sound like a good second one to start on though!
Thank you Miss
You're welcome 😊
do you use quadrats with line transects as well?
yh u place the quadrats on the positions u select
Thank you miss Estruch
you're welcome 😊 Hope you found it useful
What's meant by uniform distribution?
it means the plants are evenly spread around the area, rather than clustered in one place.
Hello miss estruch,
What is the fornula regarding the quadrat experiment, it started of with something like "mean no individuals per quadrat x .." something. i forgot it. I saw it be mentioned in a mark scheme aswell.
Thank you.
Hi, I think what you are talking about is predicting population size? If so it would be the mean per quadrat multiplied by however many quadrats could fit (or the area) in the location. for example, if there were 10 ants in one 1m squared quadrat, and the garden could fit 10 quadrats then there would be 100 ants.
hope this helps
Why is the quadrat 0.5 x 0.5 when measuring density but you said typical a quadrat is 50 x 50
different units, 0.5m or 50cm
What is the difference between line and belt transect?
Line transects are when you sample along a straight line. A belt transect is when you sample along that line using a quadrat, so it is a type of line transect. Hope that helps
@@MissEstruchBiology So in an exam question if it says, 'describe how you would investigate the distribution of marram grass from one side of the dune to the other' am I correct to say '1. create a belt transect from one side of the sand dune to another 2. place quadrats at regular intervals along the line 3. calculate percentage cover.
you should also say you would take at least 10+ repeats at different positions along the dune
@@MissEstruchBiology Ok thank you so much Miss Estruch! I now understand it better 😀
hi miss just wanted to ask is there a distingisuing factor that determines if we use quadract of a line transet ?
Belt transects are used if you are measuring changes in an area. For example, if you were measuring change in vegetation near the ocean, u would move inland along a belt transect.
what is the difference between local frequency and percentage cover, because you have to calculate the percentage of squares covered in both
local frequency is just a yes or no if any of the organism is in a small square. If the answer is yes that equals 1% per square.
For peercentage cover, you only count it as 1% if at least half the small square is covered in the organism.
@@MissEstruchBiology You're the best teacher out there! Love your work!
i’m doing GCSE biology. do i need to know all three methods because i’ve only learnt the Density one. thank you !
no, not for gcse. You might get a question using percentage cover
@@MissEstruchBiology okay. thank you!
y is bro here for gcse 💀
heyyy , is this also for the edexcel IAL syllabus ?
There will be some overlap, but not identical
i dont know if you realised but the beach picture looks like it has a dead guy with blood laying with no head haha.