It is the production and elongation of cells at the shoot tip that lead to increase in shoot length
A. true
B. false
A
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A cell biologist examines a diploid cell from a particular species of butterfly during prometaphase of mitosis and determines that 10 centromeres are present. Based on this finding, how many chromatids should be present in a single cell from this species in metaphase I of meiosis?
What will be an ideal response? 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 know about the number of chromatids in a cell? 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?
Cell walls of plants contain cellulose and __________, which aids in structural support
a. cutin b. chitin c. lignin d. lipopolysaccharide e. actin
In studying a species of fish, a structure is discovered that has no apparent function. If this is a vestigial structure, what should be found in some relatives of this fish?
A) The structure should be absent. B) A similar structure should be present, but it would be larger and have a function. C) The structure should look different and also have no function. D) The structure should be absent from fossils of ancestors of this species.
Identify two environmental factors that affect the germination of seeds. Then list the adaptation(s) of seeds to deal with each environmental factor. What will be an ideal response?