During fertilization, a and combine to form a sperm; egg; zygote zygote; egg; diploid sperm; egg; chromosome haploid; diploid; zygote

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