What is the name of the process by which mitochondria and chloroplasts probably evolved?
a. endocytosis
b. endosymbiosis
c. exocytosis
d. exosymbiosis
Ans: b. endosymbiosis
You might also like to view...
In general, the blastomeres of this region form the endodermal tissues.
A. animal pole B. vegetal pole C. equator region D. membrane
Genetic imprinting is caused by ____
a. insertion of a nucleotide into an exon b. deletion of an amino acid from the mRNA strand c. a frameshift mutation d. epigenetic changes to DNA e. a change in a termination codon
Which group of organisms does not depend directly on sunlight for energy?
I. terrestrial producers II. animal consumers III. decomposers
a. I only b. II and III only c. II only d. III only e. I and III
Which of the following is "male" in the life cycle of angiosperms?
A) Endosperm B) Megaspore mother cell C) Seed cone D) Pollen grain E) Embryo sac