Organisms that have two different alleles for a trait are said to be a. homozygous. b. heterozygous. c. purebred. d. recessive.

Your answer is B.) Heterozygous, since the prefix 'hetero' usually means separate or different. Hope this helps.

correct answer would be b.. and organism with the same alleles would be a

measuring light intensity

light meters can be used to measure light intensity. the meter is held at the soil surface and pointed in the direction of the maximum light intensity, and then the meter is read.

errors can be made when measuring light intensity by accidentally shading the light meter. the reliability of the results can be checked by taking many samples.