Drawing conclusions from evidence

Question 1

A class tested seed sprouting in two conditions. They placed 10 seeds in a sunny windowsill and 10 seeds in a dark cupboard. After one week, 8 seeds in the sunny spot had sprouted and 3 seeds in the dark cupboard had sprouted. Which statement is the best conclusion that the class could write in their report?

Accepted Answer

More seeds sprouted in the sunny windowsill than in the dark cupboard.

Answer

All of the seeds sprouted in the sunny windowsill.

Answer

Seeds need darkness to sprout.

Answer

The same number of seeds sprouted in both the sunny windowsill and the dark cupboard.

Question 2

A class investigated how the type of soil affects plant growth. After four weeks they measured the average height of the plants in each soil type: - Soil A: 12 cm - Soil B: 8 cm - Soil C: 12 cm Which conclusion best answers the original question and is supported by the data?

Accepted Answer

Plants grew taller in Soil A and Soil C than in Soil B, so the type of soil influences plant growth.

Answer

Plants in Soil B grew the tallest, indicating Soil B is the best soil for plant growth.

Answer

All three soils produced the same average plant height, so soil type does not affect growth.

Answer

Since the plants grew in every soil, the type of soil does not matter for plant growth.

Question 3

Students investigated how different amounts of sunlight affect the growth of bean plants. After two weeks they recorded the average heights: full sunlight – 12 cm, partial sunlight – 9 cm, shade – 5 cm. Which statement would be the most appropriate conclusion for their report?

Accepted Answer

Plants grew tallest in full sunlight, and the less sunlight they received, the shorter they grew.

Answer

All plants grew the same height regardless of sunlight.

Answer

Plants in shade grew taller than those in full sunlight.

Answer

The experiment showed that watering frequency caused the differences in plant height.

Try three questions

A class investigated how the type of soil affects plant growth. After four weeks they measured the average height of the plants in each soil type: - Soil A: 12 cm - Soil B: 8 cm - Soil C: 12 cm Which conclusion best answers the original question and is supported by the data?

Students investigated how different amounts of sunlight affect the growth of bean plants. After two weeks they recorded the average heights: full sunlight – 12 cm, partial sunlight – 9 cm, shade – 5 cm. Which statement would be the most appropriate conclusion for their report?

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