Question

QUESTION 1 One hundred samples of several different plant parts were placed in each of six sealed containers of equal the beginning was 250 mL. After 2 days, it was at the level shown in the table. volume. The amount of CO2 present in the containers at Plant Part Light ColorTemp(oO Container Plant Type Avg CO2 (mL)** Leaf Leaf Stem Root Leaf Red Red Blue ue 15 27 21 27 27 50 200 300 150 Oak Oak Orange ** average of 5 trials which were almost identical to each other Suppose the researcher hypothesizes that the amount of CO2 absorption is related to the type of plant. If she selects container 5 as one of her containers, what conditions should she choose for a new container 6 to test her hypothesis? 0 a. Oak leaf, orange light, 27°C Ob. Myrtle leaf, orange light, 21°C O c. Oak root-red light, 21°C od. Myrtle root, red light, 21°C O e. Myrtle leaf, orange light. 27°c Click Save and Submit to save and submit. Click Saue All Answers to save all ansuers Save All Answers Close

Answer 1

Here, there are 4 variables on which CO₂ absorption may depend- (i) Plant Type (ii) Plant Part (iii) Light Color (iv) Temperature. But the researcher only wants to check that whether or not the CO₂ absorption depends on the variable "Plant Type". So, what should she do? She should take two different plant but keep all other variables i.e. Plant Part, Light Color and Temperature same.

The first container she took was container 5 which had Oak plant and plant part was leaf. The light used was orange light and temperature was 27 ^oC. So, the other container must also have orange light, temperature 27 ^oC and plant type should be leaf. But the Plant type should be different.

Thus, the answer will be Option (e) Myrtle leaf, orange light, 27 ^oC