Selected Learning Outcomes for Primary 5 Science Papers (2014)

Jane placed equal number of single-celled organisms into 2 petri dishes, labelled, S and R. She left S in a dark cupboard and R in a bright cupboard. She monitored the number of living organisms in both petri dishes over a few days and represented in a given graph. The graph shows that S cells increases with time while R cells diminishes. Students are supposed to state the aim of Janeís experiment and explain why Jane concluded that light is not needed for the organisms to survive.

Joseph examined two plant cells under a microscope. Both cells were taken from the same plant and he labelled from Cell A and Cell B. A give diagram shows Cell A as rectangular shape while Cell B has a key shape. Students are supposed to be able to state with explanation which cell is taken from the leaf, explain the difference in shape of cells and state 2 reasons why cell A and B carry out cell division.

A given diagram shows a fish head with labels indicating gill cover and gill arch. Pupils are to draw arrows on the given diagram to show the flow of water when a fish takes in oxygen and gives out carbon dioxide. Students are also to complete a table to show the parts of the fish and human body involved in gaseous exchange.

A given graph shows Stevenís pulse rate over a period of one hour. It stayed at 70 till 15 min (at P) then rose to 100 and stayed until 40th minute at Q and declined to 70 again and stayed there. Students should be able to deduce from the graph, his pulse rate when his is at rest. Students are required to give explanation why the pulse rate increases after Steven started to jog at Point P.†† ††

Devi investigated the light intensity and the number of plants in a pond. She drew two graphs to provide information about her findings. The graphs show that light and the number of plants decrease with the depth of the pond. Graph A shows how light intensity is affected by the depth of the pond while Graph B shows how the number of plants is affected by the depth of the pond. Based on the given graphs, students are to answer the following questions. What is the relationship between the light intensity in the pond and the number of plants found? Predict the relationship between the number of plants in the pond and the number of animals in the pond. State 2 reasons why the animals are dependent on the plants in the ponds.

Susan investigated the effect of two chemicals, Y and Z, on the growth of duckweeds. She had three set-ups for her experiment. The results were shown in a given graph. The graph shows that the number of duckweeds in pond water only increases with time and plateau off. The pond with water and Chemical Y behave the same way but has slightly less duckweeds. The pond water with Chemical Z has constant number of duckweeds throughout. Students are asked to state with explanation which chemical was not suitable for the growth of duckweeds. They are also required to show the experimental control set-up and provide the purpose of it.

P513 SA2 RS

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