Biology · 2005 · May · Paper 2 · HL · TZ1 · Question paper
BiologyQuestion paper2005HLMay
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This question paper is listed under Biology in the 2005 examination archive. Its catalogue level is HL. The catalogue session is May. The information below helps you identify the document before opening the complete PDF. Subject, year and session labels come from the archive catalogue; the original cover remains the reference if a label differs. A file is not automatically suitable for your current syllabus simply because its subject name matches.
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BIOLOGY
HIGHER LEVEL
PAPER 2
Wednesday 11 May 2005 (afternoon)
2 hours 15 minutes
M05/4/BIOLO/HP2/ENG/TZ1/XX
IB DIPLOMA PROGRAMME
PROGRAMME DU DIPLÔME DU BI
PROGRAMA DEL DIPLOMA DEL BI
c
22056008
2205-6008 9 pages
INSTRUCTIONS TO CANDIDATES
! Write your session number in the boxes above.
! Do not open this examination paper until instructed to do so.
! Section A: answer all of Section A in the spaces provided.
! Section B: answer two questions from Section B. Write your answers on answer sheets.
Write your session number on each answer sheet, and attach them to this
examination paper and your cover sheet using the tag provided.
! At the end of the examination, indicate the numbers of the ques tions answered in the candidate
box on your cover sheet and indicate the number of sheets used in the appropriate box on your
cover sheet.
[Personal identifier removed]
SECTION A
Answer all the questions in the spaces provided.
1. Sea turtles have existed on Earth for millions of years, but are now threatened by human activities,
both at sea and on the sandy beaches where they lay their eggs. All species of sea turtle reproduce
in a similar way. During the breeding season, when females have mated at sea they emerge from
the ocean at night and drag themselves up a beac h. They dig a pit into which they lay fertilized
eggs. After covering the eggs with sand the females return to the ocean. The warmth of the sun on
the sand incubates the eggs allowi ng the development of young tur tles, called hatchlings. These
emerge after about 50 days and move down the beach at night to the ocean.
Ecologists have been keeping records of the nesting activity of sea turtles along the eastern
coastline of Florida since the 1950s. The bar ch art below shows the mean number of nests per
kilometre of beach between 1989 and 1998 for the th ree species of sea tur tle that are commonly
found.
Loggerheads Green Turtles Leatherbacks
(Caretta caretta)( Chelonia mydas)( Dermochelys coriacea)
Latitude / degrees
north of the equator
Nests km−1
[Source: M Salmon, Biologist, (2003), 50, pages 163168]
28
26
Canaveral
Melbourne Beach
File information
Subject
Biology
Document type
Question paper
Year
2005
Session
May
Level
HL
Paper
2
Examination zone
TZ1
Language
Not labelled in the archive
File size
470 KB
Pages
9
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