Stern's Introductory Plant Biology
14th Edition
ISBN: 9781259682742
Author: James Bidlack, Shelley Jansky, Kingsley R Stern
Publisher: McGraw-Hill Education
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Textbook Question
Chapter 8, Problem 3DQ
In discussing pomes, it was observed that the bulk of the flesh in an apple comes from the floral tube. What could you do to prove or disprove this?
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What is the hilum of the seed? A micropyle? What purposes do they serve? Explain in 3 paragraphs.
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Chapter 8 Solutions
Stern's Introductory Plant Biology
Ch. 8 - Prob. 1RQCh. 8 - Prob. 2RQCh. 8 - What is the difference between a fruit and a...Ch. 8 - What causes an ovary to develop into a fruit?Ch. 8 - What are the various parts of a fruit?Ch. 8 - How do fleshy fruits differ from dry fruits?Ch. 8 - Distinguish among simple, aggregate, and multiple...Ch. 8 - Distinguish among achenes, grains, samaras, and...Ch. 8 - What adaptations do seeds and fruits have for...Ch. 8 - Define plumule, radicle, coleoptile, coleorhiza,...
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- the fruits of wild daisy has hair like structures called pappus What do these structures represent in the flower from which the fruit was derived?arrow_forwardfrom the fruit of wild daisy, there are hair like structures, what do these structures represent in the flower from which the fruit was derived?arrow_forwardCorn develops from a seedling with a single cotyledon, displays parallel veins on its leaves, and produces monosulcate (single groove) pollen. Given this information, which term best characterizes corn?arrow_forward
- Tobacco plants invest a lot of resources into the production of secondary compounds know as alkaloids (e.g., nicotine) that we believe act as defenses against herbivores. The researchers did an experiment where they added a hormone that reduces the production of alkaloids. In graph (a), the data show that the hormone reduced the proportion of alkaloids as a function of leaf mass relative to controls- so the hormone worked. They also measured the lifetime seed production of the plants in both treatments without any herbivores present (b). They had the following results. What might you conclude/hypothesize/investigate based on the data in graph (b) (a) Chemical defenses (percent of leaf mass) 1.8% 1.4 1.0 0.6 0.2 No hormone added Hormone added (b) Lifetime seed mass (g/plant) -18 14 10 No hormone added Hormone added It would be good to test whether the hormone is very specific or whether it might also cause changes in other metabolic processes The hormone has no effect on the lifetime…arrow_forwardAnswer the following questions: How many carpels are fused to form an apple? How might the fleshy pericarp aid in seed dispersal? How many carpels are fused to form a tomato?arrow_forwardWhich of the following are traits mentioned in the article that allow seeds to be epizoochorous? a. having hooks or barbs b. being mixed with mud c. being mixed within the residues of the fruit's pulp d. being brightly colored The article mentioned is listed by the link below: https://www.mdpi.com/2076-2607/10/10/1912 I don't know how else to include what the article in question is besides just providing the link for it iarrow_forward
- The embryo of monocotyledonous seed consists of one large, shield shaped cotyledon. What is it known as?arrow_forwardin a kernel, is it possible to separate the seed from the fruit?arrow_forwardYour class is studying the burrs – the seed pods – of the common burdock plant. Your lab partner notices that the burrs easily cling to clothing, as well as to each other, and that some of the spines have come loose and gotten stuck in her skin, which is somewhat painful. Based on these observations, is there a logical explanation, other than reproductive success, for why the seed might have this special structure? (a) Yes, the structure may help the seed cling to the soil so that it can take root more easily (b) yes, these structures may prevent the seeds from getting damaged or eaten by other animals (c) yes, the structures may help prevent the seeds from getting pulled from the plant by sticking to each other (d) No, they are obviously intended to attach to animals so that they can be carried and dropped elsewherearrow_forward
- In a common eudicot pattern of development for the common bean in the figure, the radicle emerges from the seed (1), then begins to develop into a primary root that grows down into the soil. As this occurs, the hypocotyl emerges from the seed and bends into the shape of a hook (2). The bent hypocotyl lengthens and pulls the cotyledons upward (3). When the hypocotyl reaches the soil surface, exposure to light causes it to straighten (4). Primary leaves emerge from between the cotyledons and begin photosynthesis. The cotyledons typically undergo a period of photosynthesis before shriveling (5). Eventually, the cotyledons fall off the lengthening stem, and the young plant’s new leaves produce all of its food. a) Identify and explain what environmental factors influence the timing and coordination of the germination of seeds.arrow_forwardWhat is the evolutionary significance of pollen and seeds?arrow_forwardWhy is apple called a false fruit? Which part(s) of the flower forms the fruit?arrow_forward
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