Course: Botany In stable populations, ones that are neither increasing nor decreasing in abundance (e.g., there are a million trees now and there will be a million trees a thousand years from now), about how many of a plant’s seeds survive and grow to adulthood, being able to replace it when it dies? If during the plant’s lifetime it produces 100,000 seeds, how many do not survive, do not grow, and cannot replace it when it dies. (Hint: Do not think of humans, as we are an increasing population, not a stable one. Almost all our children survive, but that is not true of any other species.) Answer and explain briefly.

Course: Botany In stable populations, ones that are neither increasing nor decreasing in abundance (e.g., there are a million trees now and there will be a million trees a thousand years from now), about how many of a plant’s seeds survive and grow to adulthood, being able to replace it when it dies? If during the plant’s lifetime it produces 100,000 seeds, how many do not survive, do not grow, and cannot replace it when it dies. (Hint: Do not think of humans, as we are an increasing population, not a stable one. Almost all our children survive, but that is not true of any other species.) Answer and explain briefly.

Biology 2e

2nd Edition

ISBN:9781947172517

Author:Matthew Douglas, Jung Choi, Mary Ann Clark

Publisher:Matthew Douglas, Jung Choi, Mary Ann Clark

Chapter47: Conservation Biology And Biodiversity

Section: Chapter Questions

Problem 1VCQ: Figure 47.6 Scientists measured the relative abundance ot fern spores above and below the K-Pg...

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A. What challenges face the next Green Revolution? B. What is Marker Assisted Breeding? C. Most of the improvement in agricultural crop yields has been through inputs: getting more fertilizer to the plant, decreasing weeds, spacing, reducing loss from pests and local environmental changes. But the next big engineering feat will be with the plant molecular pathways themselves, in particular, photosynthesis. The article refers to C3 and C4 plants. What are plant geneticists trying to accomplish? D. What is the #1 seller at Wal-Mart?
Intraspecific competition is a competition between members of the same species and is commonly observed in crop plants. Table 6.2 shows the results of a greenhouse experiment which examined the effects of density on the germination and growth of barley. Plants were grown for two weeks in 10- cm diameter pots kept in identical environmental conditions and watered regularly. At the end of the experiment the plants were cropped by cutting the stems at the soil surface. Explain why knowledge of the effects in density is important to the crop farmer.
Need to know the answer in 1 and 2 1.) In the past, sometimes Aboriginal Albertans would purposely set prairie fires in the spring in a type of “controlled burn” in order to begin a secondary succession. Explain why this was done, and why this practice is no longer done. 2.) One of the first species to colonize burned forest is fireweed, a plant that makes a tall stalk of fushia-coloured flowers. Conduct an Internet search to find at least two traditional uses of this plant by Aboriginal peoples.
Intraspecific competition is a competition between members of the same species and is commonly observed in crop plants. Table 6.2 shows the results of a greenhouse experiment which examined the effects of density on the germination and growth of barley. Plants were grown for two weeks in 10- cm diameter pots kept in identical environmental conditions and watered regularly. At the end of the experiment the plants were cropped by cutting the stems at the soil surface. In the given context, can you explain thoroughly the meaning of plant density that this passage is talking about?
The Problem: Bean beetles, Callosobruchus maculatus, get their lifetime nutrition from the bean seeds (family Fabaceae) on which their mother lays her eggs. The specific bean on which each egg is laid determines the future success of the larva that develops from that egg. Choosing where to lay an egg is the most important decision a female bean beetle will make for her offspring, yet even within one bean species the seeds available may be very different in quality. Seeds vary in size (even if from the same plant), so the amount of resource available to larvae on different beans will not be the same. Seed mass may vary by as much as 50% among mung beans purchased in a local store, a species on which Callosobruchus develops normally and may complete its lifecycle. Given the problem described above, what do you predict if the null hypothesis is true? If beans of various size are tested, then there will be no difference in larval success on beans of different sizes.…
The Problem: Bean beetles, Callosobruchus maculatus, get their lifetime nutrition from the bean seeds (family Fabaceae) on which their mother lays her eggs. The specific bean on which each egg is laid determines the future success of the larva that develops from that egg. Choosing where to lay an egg is the most important decision a female bean beetle will make for her offspring, yet even within one bean species the seeds available may be very different in quality. Seeds vary in size (even if from the same plant), so the amount of resource available to larvae on different beans will not be the same. Seed mass may vary by as much as 50% among mung beans purchased in a local store, a species on which Callosobruchus develops normally and may complete its lifecycle. From where do the beetles obtain their nutrition? food particles included in their incubation chamber the substance of the bean cannibalizing other adult beetles cannibalizing larval…
The Problem: Bean beetles, Callosobruchus maculatus, get their lifetime nutrition from the bean seeds (family Fabaceae) on which their mother lays her eggs. The specific bean on which each egg is laid determines the future success of the larva that develops from that egg. Choosing where to lay an egg is the most important decision a female bean beetle will make for her offspring, yet even within one bean species the seeds available may be very different in quality. Seeds vary in size (even if from the same plant), so the amount of resource available to larvae on different beans will not be the same. Seed mass may vary by as much as 50% among mung beans purchased in a local store, a species on which Callosobruchus develops normally and may complete its lifecycle. During what stage do beetles find the majority of their nutrition? tadpole larval juvenile adult
Please answer fast Traditional Ecological Knowledge is an important topic in Ethnobotany due to its potential contribution in improving our understanding of plant utilisation and their sustainability. a) What are the characteristics of Traditional Ecological Knowledge that distinguishes it from conventional scientific knowledge? b) What are the similarities that exist between them?
Geographer, historian, and author Jared Diamond (1987) once referred to agriculture as "the worst mistake in the history of the human race." Given what you have learned about the health consequences of the domestication of plants and animals for humans, how would you respond to his statement? You may find this article helpful in your discussion response: https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4163920/
Figure 47.6 Scientists measured the relative abundance ot fern spores above and below the K-Pg boundary in this reck sample. Which of the following statements most likely represents their findings? An abundance of fern spores from several species was found below the K-Pg boundary, but none was found above. An abundance of fern spores from several species was found above the K-Pg boundary, but none was found below. An abundance of fern spores was found both above and below the K-Pg boundary, but only one species was found below the boundary , and many species were found above the boundary. Many species of fern spores were found both above and below the boundary, but the total number of spores was greater below the boundary.
Plants that colonize disturbed areas (colonizing species aka weeds) have to disperse their offspring widely so that some seeds will land in appropriate habitat. Many seeds will not land in appropriate habitat. What type of life history do you think weeds typically have? Group of answer choices many, small seeds many, large seeds few, large seeds few, small seeds
Doug Schemske is a biologist who studies plants from around the world. Doug and his research team carry out experiments with the plant species Mouse-ear Cress, or Arabidopsis thaliana. They like this species because it is easy to grow in both the lab and field. Arabidopsis is very small and lives for just one year. It grows across most of the globe and in a wide range of latitudes and climates. Arabidopsis is also able to pollinate itself and produce many seeds, making it possible for researchers to grow many individuals to use in their experiments. Doug chose Arabidopsis populations in Scandinavia and the Mediterranean for his research on local adaptation because those two locations have very different climates. The populations may have adapted to have the highest survival and reproduction based on the climate of their home location. To deal with sudden freezes and cold winters in Scandinavia, plants may have evolved freeze tolerance traits, which produces chemicals that act like…