A plant's lateral roots arise from the

a. endodermis
b. epidermis
c. phloem
d. xylem
e. pericycle


Ans: e. pericycle

Biology & Microbiology

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A friend asks you for a definition of endemic because she is writing a history paper and this word keeps occurring in the literature in reference to bison on the Great Plains of the United States. Your response is that the word endemic means 

A. a species that has gone extinct since humans have evolved on Earth. B. a species that exists in many habitats on Earth. C. a species that has coevolved with humans on Earth. D. a species that lives in only one area of Earth.

Biology & Microbiology

Water is considered to be the third most important common source of infectious diseases

Indicate whether the statement is true or false.

Biology & Microbiology

How is a stolon distinguished from a root?

a. a stolon has an epidermis-- a root does not b. a root has a cortex --- a stolon does not c. a stolon has nodes -- a root does not d. a root has vascular tissue-- a stolon does not e. a stolon has an epidermis -- a root does not

Biology & Microbiology

Describe some ways in which, at the molecular level, the process of evolution ‘tinkers' with existing struc-tures to produce novel functions

What will be an ideal response?

Biology & Microbiology