Desert plants often have ________ in their seed coats that keep them dormant until there is enough rain to complete their life cycle

A) digestive enzymes
B) cold-sensitive compounds
C) drying agents
D) water-soluble chemicals
E) wetting agents


D

Biology & Microbiology

You might also like to view...

Both DNA replication and PCR require: (check all that apply) 

_____ DNA polymerase. _____ DNA helicase. _____ a DNA template. _____ a thermocycler machine. _____ plasmid DNA.

Biology & Microbiology

Most of an herbaceous plant body consists of

a. ground tissue. b. phloem. c. vascular tissue. d. sclerenchyma. e. xylem.

Biology & Microbiology

Plague exhibits a

A. bubonic form in which swollen lesions termed buboes develop. B. pneumonic form that manifests as a respiratory disease. C. septic form historically called the Black Death. D. All of the choices are correct.

Biology & Microbiology

Which statement best represents the difference between ectotherms and endotherms?

a. Ectotherms rely on homeostatic mechanisms to maintain body temperature. b. Ectotherms have a very high daily energy expenditure. c. Endotherms rely on behavior modification to maintain their body temperature. d. Ectotherms derive heat from metabolic processes. e. Ectotherms animals outnumber endotherms.

Biology & Microbiology