Ms. Belleville has four lily plants. She plans to modify them to demonstrate to her class which parts are needed for seeds to form. Removing which set of plant parts will still allow the flower to make seeds? Choose two correct answers. A. parts 3 and 4
B. parts 1 and 3
C. parts 1 and 2
D. part 1

What was the purpose of mendel's experiments with dihybrid crosses? a. to determine if dna was a transforming factor b. to determine if traits could be recessive c. to determine if traits affected each other d. to determine if traits had more than one allele

Which greenhouse gas is emitted when burn fossil fuels for energy? a.nitrogen b.oxygen c.carbon dioxide d.helium

Astudent poured a solution of bromothymol blue indicator into three test tubes. then he placed an aquatic plant in two of the test tubes, as shown below. he placed a stopper on each test tube and placed them all in the dark for 24 hours. bromothymol blue turns from blue to yellow in the presence of co2