1990 年

Which of the following plants does not bear flowers but reproduces by seeds ?

The following diagrams show four different stages during a cell division:

The correct sequence of the stages is :

Human red blood cells and onion epidermal cells are similar in that they both

Questions 4 and 5 refer to the diagram below which shows the experimental set-up used to demonstrate the importance of digestion in the absorption of food :

After one hour, small portions of distilled water in the boiling tube were separately tested using the Biuret test, iodine test and Benedict’s test. The results were

Questions 4 and 5 refer to the diagram below which shows the experimental set-up used to demonstrate the importance of digestion in the absorption of food :

Which of the following is a necessary precaution for this experiment ?

In a starving mammal, the food reserves in the body will be depleted for energy release according to the following sequence :

Questions 7 to 9 refer to the diagram below which shows some internal structures of the human body :

Which region(s) is/are lined with mucus ?

Questions 7 to 9 refer to the diagram below which shows some internal structures of the human body :

Which region absorbs most water from its contents ?

Questions 7 to 9 refer to the diagram below which shows some internal structures of the human body :

The juice collected from duct X is boiled and then added to the following test-tubes : Tube 1 - containing water with a few drops of peanut oil Tube 2 - containing water with small cubes of egg white Tube 3 - containing water with a few grains of rice Which tube, on shaking, will form an emulsion which will persist when left to stand ?

Which of the following statements about a dental disclosing agent is correct ?