Answer:
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Explanation:
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Based on value of change in shoot biomass, the study reveals that late plants benefited most from the introduction of soil invertebrates whole the early plants were worst affected.
<h3>What is ecology?</h3>
Ecology is the study of living organisms and their interactions with one another and their non-living environment.
From the observation of the study conducted:
- A negative value of change in shoot biomass indicates that growth of each plant was reduced as a result of either competition for space or food.
- The late plants were most positively affected as indicated by the highest positive value of change in shoot biomass whereas the early plants were most negatively affected as indicated by the lowest negative value of change in shoot biomass.
Therefore, it can be concluded from the study that late plants benefited most from the introduction of soil invertebrates whole the early plants were worst affected.
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Answer and Explanation:
Tracheophyte plants, also known as vascular plants, are those that possess a supportive tissue that can also conduct fluids -The Xileme- and another tissue that conducts nutritious elements produced by photosynthesis -The Phloem-. These plants have a root (basically underground), a stem (aerial), and leaves. All of them together form the corm. And the corm counts with these vascular tissues to which we referred before.
There are different types of Tracheophyte plants, some of them produce seeds to reproduce and disperse -Spermatophyta- and some others reproduce and disperse by spores -Pteridophyta-. This last seedless group corresponds to ferns and other similar plants.
Pteridophytes characterizes for having a sporophyte that has stems with leaves and a root. It also has primitive xylem composed by tracheids and phloem, both of them formed by vascular bundles located in a central cylinder.
Spores are its dispersion units and are responsible for colonizing new areas. They also constitute the resistance units under extremely unfavorable conditions.
Their life cycle is composed of the asexual phase (sporophytic phase) and the sexual phase (gametophytic).
- The <u>sporophyte</u>, the dominant asexual generation, it is a perennial and diploid structure. Its aerial part might disappear during unfavorable seasons, but it reappears during spring or summer. The sporophyte is in charge of asexual reproduction
- The<u> gametophyte</u>, instead, is and haploid structure, ephemeral and must be in the water for its survival, and for sexual reproduction to be successful. In the presence of water, masculine gametophyte -antherozoids- are released and they swim to the archegonium to meet the ovocell. Antherozoids can swim because they have flagella. After fertilization, a new sporophyte is produced.
Answer:
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