In the internal leaf structure shown above, the item labeled "4" is

a. a vascular bundle.
b. spongy mesophyll.
c. epidermis.
d. a stoma.
e. palisade mesophyll.


D

Biology & Microbiology

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Transfer of DNA between bacterial cells by viruses is called (transformation/transduction/conjugation).

Fill in the blank(s) with the appropriate word(s).

Biology & Microbiology

What is an example of an imperfect fungi?

a. Aspergillus b. Cadmium c. Chromium d. Penicillium e. Stachybotrys

Biology & Microbiology

Which of the below are types of serial surveys?

a. united states census b. behavior risk factor surveillance system c. national health interview survey d. all of the above

Biology & Microbiology

Examine the phylogenetic tree depicted in Figure 26.17 as you address the following questions. The ability to produce methane is constrained to Archaea that optimally grow at temperatures ranging from 20-60 °C

A. true B. false

Biology & Microbiology