Concept explainers
To determine:
The reason behind making so many acorns by the oak tree.
Introduction:
The acorns are the fruit of the oak tree. It is an oval nut, and its outer part is shaped like a cup. The fruit is formed from the ovary which consists of one or more seeds. If the fruit develops from a flower with one ovary and contains only one seed, it is called simple fruit. If the fruit develops from one flower containing many carpels, it is called an aggregate fruit.
To determine:
The reason behind having better reproductive success in dispersing the seeds far from the parent as compared to the one whose seeds fall at the base of the parent plant.
Introduction:
The seed dispersal is considered as the important function of fruits. The seeds are dispersed by animals, wind, and water. The wind dispersed fruits have wings or other structures that catch the air currents. The water dispersed fruits may drift across the water bodies before colonizing distant lands. The animal dispersed fruits are vibrant colored and they also have spines which help them to get attached to animals.
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BIOLOGY:THE ESSENTIALS (LL) W/CONNECT
- Imagine that you are a member of a research group conducting research on fruit type and seed dispersal. Your group has submitted a paper to a peer-reviewed journal that addresses the factors that impact fruit type and seed dispersal mechanisms in plants of Central America. The editor of the journal communicates that your paper may be published if you make ‘minor revisions’ to the document. Why is seed dispersal important in the life of plants? What would be the consequences of having seeds that simply fell to the ground underneath the parent tree? Please be detailed as possiblearrow_forwardImagine that you are a member of a research group conducting research on fruit type and seed dispersal. Your group has submitted a paper to a peer-reviewed journal that addresses the factors that impact fruit type and seed dispersal mechanisms in plants of Central America. The editor of the journal communicates that your paper may be published if you make ‘minor revisions’ to the document.Question: Why is seed dispersal important in the life of plants? What would be the consequences of having seeds that simply fell to the ground underneath the parent tree?arrow_forwardList four mechanisms of seed dispersal:arrow_forward
- Your 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_forwardIn the life cycle of the conifer tree, what TWO structures represent the GAMETOPHYTES of the conifer? Select BOTH. Seeds Pollen grains Pine cone Megaspores Ovule sacs Microsporesarrow_forwardThe picture below shows a branch of Douglas fir, an evergreen tree of the Phylum Coniferophyta. Based on this picture, which of the following answers is true? O only staminate cones are visible O only ovulate cones are visible O both ovulate and staminate cones are visible O neither ovulate and staminate cones are visiblearrow_forward
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- Theophrastus of Lesbos, Aristotle’s successor as head of the Lyceum, improved upon Aristotle’s botany by classifying all monocotyledons as flowering plants with: two seed-leaves in the embryo, branching leaf veins, and flower parts in multiples of 4 or 5 one seed-leaf in the embryo, branching leaf veins, and flower parts in multiples of 4 or 5 one seed-leaf in the embryo, parallel leaf veins, and flower parts in multiples of 3 or 6 two seed-leaves in the embryo, parallel leaf veins, and flower parts in multiples of 3 or 6 two seed-leaves in the embryo, branching leaf veins, and flower parts in multiples of 3 or 6arrow_forwardThe three main parts of a typical mature eudicot seed are the _______ . a. pollen grain, egg, and seed coat b. embryo, endosperm, and seed coat c. megaspores, microspores, and ovule d. embryo, cotyledons, and seed coatarrow_forwardIn an angiosperm life cycle, sexual reproduction includes: meiosis within the male gametophyte to produce sperm. meiosis within the female gametophyte to produce eggs. meiosis within the ovary to produce megaspores. fertilization leading to development of microspores. fertilization leading to development of megaspores.arrow_forward
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