An opening in leaves that functions in the exchange

of gases is called a
a. cuticle.
b. stoma.
c. guard cell.
d. pit.
e. pore.


Answer: b

Biology & Microbiology

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The Monarch butterfly has an undesirable taste and the Viceroy butterfly has a selective advantage

because it looks like the Monarch. This is an example of which process?

a. aposematic coloration b. Batesian mimicry c. competitive exclusion principle d. cryptic coloration e. Müllerian mimicry

Biology & Microbiology

What are the characteristics of the most highly expressed genes in the ocean? How abundant are they in microbial genomes (across all microbes) and what sorts of metabolic processes are they involved in?

What will be an ideal response?

Biology & Microbiology

What triggers the entry of a cell into mitosis?

a) the addition of inhibitory phosphate groups to Cdk1 by the Wee1 kinase b) the removal of inhibitory phosphase groups from Cdk1 by the Wee1 kinase c) the addition of inhibitory phosphate groups to Cdk1 by the Cdc25 phosphatase d) the removal of inhibitory phosphate groups from Cdk1 by the Cdc25 phosphatase

Biology & Microbiology

RFLPs can be used to establish parent-offspring relationships because, assuming that two parents are heterozygous for different sets of RFLPs, a child will have

a. four RFLPS, represented by two identical RFLPs from each parent. b. two different RFLPs, one from each parent. c. four RFLPS, represented by two different RFLPs from each parent. d. two identical RFLPs, one from each parent. e. two different RFLPs, both from one parent.

Biology & Microbiology