Which object is accelerating? a) a lamp standing motionless on a desk. b) a ball on a string whirled in a circle at a constant speed. c) a car driving straight along a highway at a constant speed. d) a humming bird hovering perfectly still in front of a flower.

Which of the following is most important in making the typical seed more resistant to adverse conditions than the typical spore? a) a different type of sporopollenin b) an internal reservoir of liquid water c) integument(s) d) ability to be dispersed e) waxy cuticle

In sweet pea, gene c is responsible for color production and gene p is responsible for the purple color pigment. both of them are located on two different loci on different chromosomes. the flowers will be purple only when the plant has the genotypes as c_p_. no color will be produced with genotypes: ccpp, ccpp, ccpp, ccpp. thus, gene c controls the expression of gene p. what pattern of inheritance is exhibited here? a. pleiotropy b. epistasis c. multiple alleles

Up to what percentage of the world's flora consisted of cycads during the triassic period? 100% 75% 50% 20%