17 Aug Question: Alice Wants To Test How Warmer Temperatures That Occur Over One Night Can Affect Pollen Germination In The Nicotiana Tabacum Plant. She Knows That The Plant Prefers 20–30 °C (68–86 °F). She Sets Up An Experiment Where Her Plants Are Stored In An Incubator With Regulated Temperature: The Incubator Is Kept At 20–30 °C (68–86 °F) During The …
Alice wants to test how warmer temperatures that occur over one night can affect pollen germination in the Nicotiana tabacum plant. She knows that the plant prefers 20–30 °C (68–86 °F). She sets up an experiment where her plants are stored in an incubator with regulated temperature: the incubator is kept at 20–30 °C (68–86 °F) during the day and increases to 35-40 °C (95-104°F) at night. She will leave the plants in the incubator for 24 hours. Alice hypothesizes that plants exposed to warmer temperature for a night will have increased germination.
A) What is her positive control?
-Nicotiana tabacum plant left at 20-30 °C
-Aloe maculata plant left at 20-30 °C
-Nicotiana tabacum plant left at 35-40 °C
-Aloe maculata plant left at 35-40 °C
B) What is her independent variable?
-The temperature of the incubator
-Nicotiana tabacum plant
-Percent germination
-Elongation rate
C) What is her dependent variable?
-Percent germination
-Initiation time
-If the pollen germinates
-The temperature of the incubator
D) What is her ideal negative control?
-A temperature that prevents Nicotiana tabacum pollen growth
-A temperature that prevents Aloe maculata pollen growth
-Immature Nicotiana tabacum pollen
-Nicotiana tabacum pollen in cedar oil
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