100% satisfaction guarantee Immediately available after payment Both online and in PDF No strings attached
logo-home
Official summer 2024 OCR GCE Biology A H420/02: Biological diversity A Level Merged Question Paper + Mark Scheme £6.18   Add to cart

Exam (elaborations)

Official summer 2024 OCR GCE Biology A H420/02: Biological diversity A Level Merged Question Paper + Mark Scheme

 16 views  3 purchases
  • Module
  • Official summer 2024 OCR GCE A/AS LEVEL
  • Institution
  • Official Summer 2024 OCR GCE A/AS LEVEL

Official summer 2024 OCR GCE Biology A H420/02: Biological diversity A Level Merged Question Paper + Mark Scheme

Preview 4 out of 61  pages

  • August 29, 2024
  • 61
  • 2024/2025
  • Exam (elaborations)
  • Questions & answers
  • Official summer 2024 OCR GCE A/AS LEVEL
  • Official summer 2024 OCR GCE A/AS LEVEL
avatar-seller
Official summer 2024

OCR
GCE
Biology A
H420/02: Biological diversity
A Level


Merged Question Paper + Mark Scheme




Ace your Mocks!!!

, Oxford Cambridge and RSA

Friday 14 June 2024 – Morning
A Level Biology A
H420/02 Biological diversity
Time allowed: 2 hours 15 minutes

You can use:
* 1 3 4 5 8 8 7 1 5 1 *




• a scientific or graphical calculator
• a ruler (cm/mm)




* H 4 2 0 0 2 *




Please write clearly in black ink. Do not write in the barcodes.

Centre number Candidate number


First name(s)

Last name


INSTRUCTIONS
• Use black ink. You can use an HB pencil, but only for graphs and diagrams.
• Write your answer to each question in the space provided. If you need extra space use
the lined pages at the end of this booklet. The question numbers must be clearly shown.
• Answer all the questions.
• Where appropriate, your answer should be supported with working. Marks might be
given for using a correct method, even if your answer is wrong.

INFORMATION
• The total mark for this paper is 100.
• The marks for each question are shown in brackets [ ].
• Quality of extended response will be assessed in questions marked with an asterisk (*).
• This document has 32 pages.

ADVICE
• Read each question carefully before you start your answer.




© OCR 2024 [601/4260/1] OCR is an exempt Charity
DC (LK/SG) 329791/5 Turn over

, 2
Section A

You should spend a maximum of 20 minutes on this section.

Write your answer to each question in the box provided.


1 Biomass is transferred through ecosystems.

What process makes biomass available for transfer to the next trophic level in the food chain?

A Excretion

B Growth

C Removal of undigested food

D Respiration


Your answer [1]



2 What explains why food chains rarely have more than five trophic levels?

A Parts of the food organism are not eaten by organisms higher in the food chain.

B Plants absorb only a small proportion of the Sun’s energy.

C There is a limit to the size to which a predator can grow.

D Transfer of biomass between trophic levels is inefficient.


Your answer [1]




© OCR 2024

, 3
3 The rate at which plants produce biomass is known as productivity.

What is a suitable unit with which to measure productivity at different depths in the ocean?

A kg day–1 m–2

B kg day–1 m–3

C kg year–1 m2

D m kg–1 year –1


Your answer [1]



4 Microscopes vary in terms of magnification and resolution.

Which option describes the terms magnification and resolution?

A Magnification is the size of an image under a microscope and resolution is the sharpness of
that image.

B Magnification is the size of the image compared to the actual size and resolution is the ability
to distinguish two objects from one another.

C Resolution is the ability to make small objects appear larger and magnification is the ability
to distinguish two objects from one another.

D Resolution is the size of an image under a microscope and magnification is the sharpness of
that image.


Your answer [1]




© OCR 2024 Turn over

The benefits of buying summaries with Stuvia:

Guaranteed quality through customer reviews

Guaranteed quality through customer reviews

Stuvia customers have reviewed more than 700,000 summaries. This how you know that you are buying the best documents.

Quick and easy check-out

Quick and easy check-out

You can quickly pay through credit card for the summaries. There is no membership needed.

Focus on what matters

Focus on what matters

Your fellow students write the study notes themselves, which is why the documents are always reliable and up-to-date. This ensures you quickly get to the core!

Frequently asked questions

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.

Satisfaction guarantee: how does it work?

Our satisfaction guarantee ensures that you always find a study document that suits you well. You fill out a form, and our customer service team takes care of the rest.

Who am I buying these notes from?

Stuvia is a marketplace, so you are not buying this document from us, but from seller Aideen. Stuvia facilitates payment to the seller.

Will I be stuck with a subscription?

No, you only buy these notes for £6.18. You're not tied to anything after your purchase.

Can Stuvia be trusted?

4.6 stars on Google & Trustpilot (+1000 reviews)

72841 documents were sold in the last 30 days

Founded in 2010, the go-to place to buy revision notes and other study material for 14 years now

Start selling
£6.18  3x  sold
  • (0)
  Add to cart