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)

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2000-AL-BIO 1A−3 − 2 −

P 40 Q 75

R 120

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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

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2000-AL-BIO 1A−5 − 4 −

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2000-AL-BIO 1A−6 − 5 −

6. ,

7

7.

4

8.

(a) 5

(

(b) ½

(c) 2

− −

B1 B2

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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

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