The tissue that produces cells to thicken a root or stem is/are the

A. apical meristem only.
B. apical and lateral meristems.
C. tracheid.
D. vascular bundle.
E. lateral meristem only.


Ans: E. lateral meristem only.

Biology & Microbiology

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A protein containing a signal located at its amino terminal end could be sorted to:

A. the cytosol. B. the nucleus. C. a mitochondrion or the rough endoplasmic reticulum.

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The observation by scientists that flies preferentially mate with those of similar phenotypes illustrates

random mating. Indicate whether the statement is true or false.

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How would the phenotypes of progeny differ if a trait was produced from the influence of many genes, compared to a trait caused by a single gene with two alleles and incomplete dominance?

A. They would not differ, and progeny in both would have an array of phenotypes that vary continuously across a range. B. The progeny from the single-gene cross would all be identical, whereas the manygene cross would vary continuously across a spectrum. C. The progeny from the single-gene cross would have three phenotypes, whereas the progeny of the trait caused by many genes would vary continuously across a spectrum.

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The substance most rich in unsaturated fats is

A. fat that is solid at room temperature. B. butter. C. beef fat. D. bacon grease. E. olive oil.

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