生物 1992 年 DSE、CE 選擇題

1.

Questions 1 and 2 refer to the diagram below which shows a transverse section of a leaf :

Which of the cells are green ?

2.

Questions 1 and 2 refer to the diagram below which shows a transverse section of a leaf :

The cuticle covering the upper and lower surfaces is for

(1)supporting the leaf.

(2)preventing the entry of germs.

(3)reducing water evaporation from the surfaces.

3.

Questions 3 and 4 refer to the diagram below which shows a transverse section of a young dicotyledonous stem :

Which region is made up of cells with the thickest cell wall ?

4.

Questions 3 and 4 refer to the diagram below which shows a transverse section of a young dicotyledonous stem :

Which region is responsible for the transport of organic nutrients ?

5.

The oxygen released during photosynthesis of green leaves comes from

6.

Which of the following are true for fungi ?

(1)They possess cell wall.

(2)They have roots and stems.

(3)They do not possess chlorophyll.

7.

Which of the following graphs shows the reaction rate of a hot mixture of starch and amylase when it is cooled down from 80°C to 0°C ?

8.

The experimental set-up shown below was kept in the dark for 48 hours before exposing it to sunlight for another 3 hours. Leaf X and Y were then tested for starch. Which of the following would be the probable results ?

	Leaf X	Leaf Y
	starch present	starch present
	starch present	starch absent
	starch absent	starch present
	starch absent	starch absent

9.

When testing a leaf for starch, the leaf is boiled with alcohol in a water bath to

10.

When compared with aerobic respiration, anaerobic respiration