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

Biology & Microbiology

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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

Biology & Microbiology

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

Biology & Microbiology

In general, the blastomeres of this region form the endodermal tissues.  

A.  animal pole B.  vegetal pole C.  equator region D.  membrane

Biology & Microbiology

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

Biology & Microbiology