生物 2001 年 DSE、CE 選擇題（第 4 頁）

31.

Questions 31 and 32 refer to the diagram below, which shows a cell in the lower epidermis of a leaf :

Which structure allows dissolved substances to pass through freely ?

32.

Questions 31 and 32 refer to the diagram below, which shows a cell in the lower epidermis of a leaf :

The lower epidermis was taken from a leaf that had been kept under one of the following conditions for 30 minutes. Under which condition was the leaf kept ?

33.

Questions 33 and 34 refer to the diagram below, which shows part of the urinogenital system of a man :

Which of the following structures contribute to the content of semen ?

34.

Questions 33 and 34 refer to the diagram below, which shows part of the urinogenital system of a man :

Which of the following may still occur after structure 3 on both sides of the body are tied up and cut ?

(1)production of sperms

(2)production of seminal fluid

(3)production of male sex hormone

35.

Which of the following can pass from the maternal blood to the foetal blood through the placenta ?

(1)antibody

(2)nicotine

(3)red blood cell

36.

The foetus in the uterus obtains oxygen through

(1)its lungs.

(2)the amnion.

(3)the placenta.

37.

What is the function of contraceptive pills ?

38.

Which of the following can be recycled in an ecosystem by decomposers ?

(1)carbon

(2)energy

(3)nitrogen

39.

The tail of a male rat and a female rat were cut off. What will be the phenotype of their offspring if they mate ?

40.

Which of the following may affect the body mass of newborn babies ?

(1)genetic make-up of the father

(2)smoking habit of the mother

(3)diet of the mother