WJEC BY2 Biology AS - 1st June 2015

What did everyone get for the leaf tissue that uses carbohydrates (or something like that can't remember exactly) and the rate question!?

What did everyone get for the leaf tissue that uses carbohydrates (or something like that can't remember exactly) and the rate question!?

I thought it was something lie, where would you insert the carbon14 so I put the phloem, then the rate I got 0.42
I the palisade mesophyll is right tho 😔
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What did people say for what vertebrates had in common but not Chordata as a phylum? I said backbone but thought they were basically the same thing


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I said something about the nervous system, the wording of the question really confused me 😐


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Good luck everyone

One of the biology teachers at my college predicts every year what will come up. This is what they reckon this year, for last minute revision!

2.1
• Taxonomy – chordata classes
• Annelid/Arthropod/insect characteristics and diagrams
• Phylogenetic tree

2.2
• Leaf structure and adaptations to gas exchange and light absorption
• Stomatal opening
• Mammalian lung structure and mammalian ventilation
• Fish gill structure and adaptation

2.3
• Blood pressure distance from heart i.e. increase in total cross sectional surface area
• O2 dissociation graph
• Water movement pathways across cortex e.g. symplast etc… and casparian strip
• Translocation experiments …source/sink cells

2.4
• Asexual vs sexual reproduction
• Insect life cyles

2.5
• Herbivore vs Carnivore dentition and digestion
• Carbohydrate/protein/lipid digestion + absorption

2.6
• All of it!

It wanted the leaf tissue that photosynthesized so (palisade) mesophyll.
It was 38cm over 2.5-1.0hrs so 38cm over 90 mins. I think that was 0.422 on my calculator.

Can you call the pupa stage pupalige or did I just make that up?😂

What did you get on the question about movement of blood flow from atrium to ventricle, and ventricle to aorta, and the other one? (letters)

What did people say for what vertebrates had in common but not Chordata as a phylum? I said backbone but thought they were basically the same thing


Posted from TSR Mobile

It wanted the leaf tissue that photosynthesized so (palisade) mesophyll.
It was 38cm over 2.5-1.0hrs so 38cm over 90 mins. I think that was 0.422 on my calculator.

Good luck everyone

One of the biology teachers at my college predicts every year what will come up. This is what they reckon this year, for last minute revision!

2.1
• Taxonomy – chordata classes
• Annelid/Arthropod/insect characteristics and diagrams
• Phylogenetic tree

2.2
• Leaf structure and adaptations to gas exchange and light absorption
• Stomatal opening
• Mammalian lung structure and mammalian ventilation
• Fish gill structure and adaptation

2.3
• Blood pressure distance from heart i.e. increase in total cross sectional surface area
• O2 dissociation graph
• Water movement pathways across cortex e.g. symplast etc… and casparian strip
• Translocation experiments …source/sink cells

2.4
• Asexual vs sexual reproduction
• Insect life cyles

2.5
• Herbivore vs Carnivore dentition and digestion
• Carbohydrate/protein/lipid digestion + absorption

2.6
• All of it!

Also what did people get for two differences for the butterfly Q?