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3. 1. B1 B2 4. AL (C)1 B1 B2 AL (C)1 B1B2 © 2. 40 60 2000-AL Hong Kong Examinations Authority All Rights Reserved 2000 2000-AL-BIO 1A–1 (a) 1 (c) P 2 (c)(a) (b) (d) AL(C)1 (2n) (2n) All Rights Reserved 2000 2000-AL-BIO 1A−2 − 1 − R 120 All Rights Reserved 2000 2000-AL-BIO 1A−3 − 2 −
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Hong Kong Examinations AuthorityAll Rights Reserved 2000
2000-AL-BIO 1A–1
2 0 0 0
( )
1. B1 B2
2. 40 60
3.
4. AL (C)1
B1 B2
AL (C)1 B1 B2
5.
2000-AL
2000-AL-BIO 1A−2 − 1 −
AL(C)1
1 .
4
2. (a) (b) (c) (d)
2
(2n) (2n)
3 . P Q R
(a) 1
(b)
4
(c) P 2
(c)(a)
(b) (d)
All Rights Reserved 2000
2000-AL-BIO 1A−3 − 2 −
P 40 Q 75
R 120
All Rights Reserved 2000
2000-AL-BIO 1A−4 − 3 −
4. 2½
5.
1a Cenocrinus asterias
1b 2
2a 6
2b 3
3a 4
3b 5
4a Ophiothrix fragilis
4b Ophiarachna incrassata
5a Archaster typicus
5b Rosaster alexandri
6a 7
6b Thyonella gemmata
7a Lytechinus variegatus
7b Heterocentrus mammilatus
(a) D F H
3
(b) A B 2
(c) D 1
All Rights Reserved 2000
2000-AL-BIO 1A−5 − 4 −
All Rights Reserved 2000
2000-AL-BIO 1A−6 − 5 −
6. ,
7
7.
4
8.
(a) 5
(
(b) ½
(c) 2
− −
B1 B2
All Rights Reserved 2000
2000
5. (a) D Archaster typicus 1b → 2b → 3b → 5a
F Ophiothrix fragilis 1b → 2b → 3a → 4a
H Lytechinus variegatus 1b → 2a → 6a → 7a
(B1)
9. (a) (i) (1) 5.0%
(2) 2.0%
3.5%
(b) (i) PER
B. 4.78
C. 6.28
All Rights Reserved 2000