Mock Exam Paper D Higher Level Marking Scheme

Leaving Cert Biology Mock – Marking Scheme

Section A Five best answers to count from this section

1

Any five correct answers get (4) marks each

(a)

Sperm duct or vas deferens

(b)

Hepatic portal vein

(c)

Oesophagus

(d)

Ileum or small intestine

(e)

Bile duct

(f)

Ureter

2

(a)

Name of ecosystem e.g. deciduous woodland or Urban etc.

First six correct points get (3) marks each and seventh correct point gets (2) marks

  • Name of secondary consumer from ecosystem e.g. fox
  • Adaptation e.g. eyes in front of head
  • Benefit of adaptation e.g. can gauge distance to help it catch its prey

(0)

(b)

  • Harmful addition to environment
  • Activity e.g. burning fossil fuels
  • Pollutant e.g. SO2 or CO2
  • Problem caused: SO2 – acid rain OR CO2 global warming

3

(a)

Autotrophic: make their food

Heterotrophic: must acquire food

(3) (3)

(b)

Binary fission

Advantage: quick or can colonise new areas quickly

Disadvantage: slow to evolve or all offspring are genetically identical or all prone to same
disease

(3) (3)

(3)

(c)

Not killed by antibiotics

(3)

(d)

Disease causing

(2)

4

(a)

Phosphate / deoxyribose

2(1)

(b)

Coding: carries information for making proteins (Note: found in genes is not acceptable)

Non-coding: does not carry information for making proteins

(3) (3)

(c)

Enzyme unzips DNA / free nucleotides join with / complimentary base pairs / new strand built
(Any 2 points (3) marks each)

2(3)

(d)

Forensics / family relationships

2(3)

5

(a)

Change in characteristics of a species / over time / may lead to new species
(Any 2 points (3) marks each)

2(3)

(b)

Variation amongst population / competition for limited resources / best adapted individuals survive (survival of the fittest) / better adapted individuals produce more offspring / each generation becomes better adapted (Any 3...

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