The simple tissue composed of dead, thick-walled cells that provide structural support to plants is referred to as ____

a. vascular
b. dermal
c. collenchyma
d. sclerenchyma
e. parenchyma


ANSWER: d

Biology & Microbiology

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Coloration in the peppered moth (Biston betularia) is determined by a single gene with two alleles showing complete dominance. Dark moths are homozygous dominant or heterozygous for the gene, light moths are homozygous recessive. In a sample of 100 moths, you determine that 64 of the moths are dark. According to the Hardy-Weinberg rule, the expected frequency of the dominant allele is ___.  

A.  0.4 B.  0.36 C.  0.6 D.  0.64 E.  cannot be determined Clarify Question · What is the key concept addressed by the question? · What type of thinking is required? · What key words does the question contain and what do they mean?   Gather Content · What do you already know about the Hardy-Weinberg principle? How does it relate to the question?   Consider Possibilities · What other information is related to the question? Which information is most useful?   Choose Answer · Given what you now know, what information and/or problem solving approach is most likely to produce the correct answer?   Reflect on Process · Did your problem-solving process lead you to the correct answer? If not, where did the process break down or lead you astray? How can you revise your approach to produce a more desirable result?

Biology & Microbiology

Four of the five animals listed below possess some

type of coelom. Select the exception. a. nematodes b. annelids c. arthropods d. mollusks e. platyhelminthes

Biology & Microbiology

AluI is an example of which type of transposable element commonly found in the genome of humans?

A) LINE elements B) SINE elements C) P elements D) Copia elements E) Ty elements

Biology & Microbiology

Describe the structure of representative vertebrate hearts from fish through mammals. Briefly explain

the circulation pattern supported by one type of non-mammalian vertebrate heart. What will be an ideal response?

Biology & Microbiology