[size=4]Andy wanted to find out if the presence of roots affects the rate of water transported up the plants. She prepared two set-ups, X and Y, using similar plants of the same height as shown below. The roots of the plant in set-up Y have been removed. [/size]



[size=4][cmimg]0/12627174_VRZEZPRS.png[/cmimg][/size]



[size=4]Which of the following observations would allow Andy to draw conclusion for her experiment?[/size]



[size=4][b]I[/b]   The height of growth of each plant after two hours.

[b]II[/b]   The volume of water left in each beaker after two hours.

[b]III[/b]   The time taken for both flowers in each set-up to turn red.[/size]

[size=4]Jay wants to find out if cutting food into smaller pieces will speed up digestion. [/size]



[size=4][cmimg]0/12627174_5HSIZ8CY.png[/cmimg][/size]



[size=4]Which two set-ups should Jay use for his experiment? [/size]

[size=4]Which of the following statements about heredity is/are true?





[b]I.[/b] The offspring inherit traits from both parents.

[b]II.[/b] A male parent cannot pass his traits to a female child.

[b]III.[/b] The eye color of an offspring is a trait that can be inherited from parents.[/size]

[size=4]Which one of the following represents a single population?[/size]

[size=4]A type of dolphin was observed to swim around a school of fish and guide them towards a fisherman’s boat. The dolphin feeds on the small fish that escape from the fisherman’s net.[/size]



[size=4][cmimg]0/12627174_VDIZO6Z7.png[/cmimg][/size]

[size=4]Based only on the information above, which one of the following correctly states and explains the relationship between the dolphin and the man? [/size]



[table][tr][td][/td][td][size=4][b]Relationship[/b][/size][/td][td][size=4][b]Reason[/b][/size][/td][/tr][tr][td][size=4] [b]A [/b][/size][/td][td][size=4]Dolphin benefits, man is harmed[/size][/td][td][size=4]Dolphin has man’s protection from predators; but man loses money with less fish caught.[/size][/td][/tr][tr][td][size=4][b] B [/b][/size][/td][td][size=4]Man benefits, dolphin does not benefit [/size][/td][td][size=4]Man can control dolphins and dolphins are their servants.[/size][/td][/tr][tr][td][size=4][b] C [/b][/size][/td][td][size=4]Both man and dolphin benefit[/size][/td][td][size=4]Man can catch more fish and dolphin has food to eat.[/size][/td][/tr][tr][td][size=4][b] D [/b][/size][/td][td][size=4]Neither the dolphin nor the man benefits[/size][/td][td][size=4]Man has fish stolen by dolphin and dolphin is hunted by man.[/size][/td][/tr][/table]