Examen
Edexcel AS Biology A Marking Scheme 2 2025 Predicted
- Grado
- Institución
Edexcel AS Biology A Marking Scheme 2 2025 Predicted
[Mostrar más]Vista previa 4 fuera de 42 páginas
Vista previa 4 fuera de 42 páginas
Añadir al carrito
Añadir al carrito
Vendedor
Seguir
premiumpapers2425
Comentarios recibidos
Vista previa del contenido
Mark Scheme (Results)2025 Predicted Paper
Pearson Edexcel Level 3 GCE
Edexcel AS Biology Marking Scheme 2A 2025 Predicted
PAPER 2 Advanced Subsidiary
1
, Edexcel AS Biology Marking Scheme 2A 2025 Predicted
General Marking Guidance
• All candidates must receive the same treatment. Examiners must mark the
first candidate in exactly the same way as they mark the last.
• Mark schemes should be applied positively. Candidates must be rewarded
for what they have shown they can do rather than penalised for omissions.
• Examiners should mark according to the mark scheme not according to their
perception of where the grade boundaries may lie.
• There is no ceiling on achievement. All marks on the mark scheme should be
used appropriately.
• All the marks on the mark scheme are designed to be awarded. Examiners
should always award full marks if deserved, i.e. if the answer matches the
mark scheme. Examiners should also be prepared to award zero marks if the
candidate’s response is not worthy of credit according to the mark scheme.
• Where some judgement is required, mark schemes will provide the principles
by which marks will be awarded and exemplification may be limited.
• When examiners are in doubt regarding the application of the mark scheme
to a candidate’s response, the team leader must be consulted.
• Crossed out work should be marked UNLESS the candidate has replaced it
with an alternative response.
2
,Edexcel AS Biology Marking Scheme 2A 2025 Predicted
3
, Edexcel AS Biology Marking Scheme 2A 2025 Predicted
Comprehensive Marking Scheme
Question 1
(a): The diagram below shows a cross-section of a dicotyledonous plant
stem. Label the following structures: xylem, phloem, cambium, and
cortex.
Question Breakdown
• Topic: Plant anatomy and functions.
• Theory: Knowledge of dicotyledonous plant structure, specifically vascular
bundles and surrounding tissues.
• Type of Question: A labeling question that tests understanding of plant
anatomy.
• Pattern (2015-2023): Frequently appears in exams to test diagram
interpretation. Usually includes labeling vascular bundles, identifying xylem
and phloem, or describing their functions.
How to Approach:
1. Recognize key structures: Xylem, phloem, cambium, and cortex are
central features in plant stems.
2. Recall their locations in a dicot stem cross-section:
o Xylem: Inner side of vascular bundle.
o Phloem: Outer side of vascular bundle.
o Cambium: Thin layer between xylem and phloem.
o Cortex: Outer layer of the stem, outside the vascular bundles.
Theoretical Understanding:
• Xylem: Conducts water and minerals; lignified for support.
• Phloem: Transports sugars and nutrients.
• Cambium: Meristematic tissue responsible for secondary growth.
• Cortex: Provides structural support and stores nutrients.
4
Los beneficios de comprar resúmenes en Stuvia estan en línea:
Garantiza la calidad de los comentarios
Compradores de Stuvia evaluaron más de 700.000 resúmenes. Así estas seguro que compras los mejores documentos!
Compra fácil y rápido
Puedes pagar rápidamente y en una vez con iDeal, tarjeta de crédito o con tu crédito de Stuvia. Sin tener que hacerte miembro.
Enfócate en lo más importante
Tus compañeros escriben los resúmenes. Por eso tienes la seguridad que tienes un resumen actual y confiable. Así llegas a la conclusión rapidamente!
Preguntas frecuentes
What do I get when I buy this document?
You get a PDF, available immediately after your purchase. The purchased document is accessible anytime, anywhere and indefinitely through your profile.
100% de satisfacción garantizada: ¿Cómo funciona?
Nuestra garantía de satisfacción le asegura que siempre encontrará un documento de estudio a tu medida. Tu rellenas un formulario y nuestro equipo de atención al cliente se encarga del resto.
Who am I buying this summary from?
Stuvia is a marketplace, so you are not buying this document from us, but from seller premiumpapers2425. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy this summary for $4.99. You're not tied to anything after your purchase.
Can Stuvia be trusted?
4.6 stars on Google & Trustpilot (+1000 reviews)
45,681 summaries were sold in the last 30 days
Founded in 2010, the go-to place to buy summaries for 15 years now
Vistos recientemente
Examen ·
Edexcel AS Biology B Question Paper 2 2025 Predicted
Examen ·
Edexcel AS Biology A Question Paper 1 2025 Predicted
