Concept explainers
To review:
The results drawn from the graph and draw conclusions regarding the springtails’ role in the reproduction of moss.
Introduction:
The arthropods help in the fertilization of the many plants. The arthropods help in the transfer of the motile gamete (generally male gamete) from one place to another, which assist the process of mating in between male and the female gamete. This can be studied by the presence of the gametes of the plant on the body of the arthropods.
Researchers propose hypothesis that sperm transfer in mosses is facilitated by springtails (a type of arthropod). This hypothesis was tested by researchers growing patches of male and female mosses separated at distances from each other and in the absence or presence of springtails. Researchers checked mean number of sporophytes in each female patch (to confirm occurrence of fertilization). Their results are shown in graph below (& means P **lt; 0.01, * means P < 0.05).
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Chapter 28 Solutions
Biological Science (7th Edition)
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- What type of cells flank the opening on either side? (leaf x.s.) vessel elements sieve elements companion cells tracheids guard cells none of thesearrow_forwardWhat specific cell is indicated. (Cucurbita stem I.s.) vessel element sieve element O companion cell tracheid guard cell none of thesearrow_forwardWhat specific cell is indicated? (Aristolochia stem x.s.) vessel element sieve element ○ companion cell O O O O O tracheid O guard cell none of thesearrow_forward
- Identify the tissue. parenchyma collenchyma sclerenchyma ○ xylem O phloem O none of thesearrow_forwardPlease answer q3arrow_forwardRespond to the following in a minimum of 175 words: How might CRISPR-Cas 9 be used in research or, eventually, therapeutically in patients? What are some potential ethical issues associated with using this technology? Do the advantages of using this technology outweigh the disadvantages (or vice versa)? Explain your position.arrow_forward
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