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Ecology and Bionomics

This category is for questions about the field of Biology that ties together the environment and its inhabitants in order to better understand the world we live in.

1,360 Questions

The initial ecological consequences of falling water tables?

Falling water tables can lead to decreased water availability for plants, reduced soil moisture content, and alterations in local hydrological cycles. This can result in lower crop yields, increased competition for water resources, and changes in ecosystem dynamics. Additionally, declining water tables can impact the quality of groundwater, leading to issues such as saltwater intrusion in coastal areas.

Ecologists often use mathematical models and computer simulations because?

Ecologists use mathematical models and computer simulations to understand complex ecological systems, predict the outcomes of different scenarios, and test hypotheses that would be challenging to study in real-world settings. These tools help ecologists make informed decisions about conservation and management strategies.

What level of ecological research would consider how a community is affected by neighboring ecosystems?

This type of research would fall under the field of landscape ecology, which examines the interactions between different ecosystems within a broad geographic area. By studying how neighboring ecosystems influence the dynamics and composition of a specific community, researchers can gain insights into the interconnectedness of different habitats and the flow of energy and resources across landscapes.

If an animal from food chain is disappeared then what will be its effect on the food chain?

If an animal from a food chain disappears, it can have a cascading effect on the entire ecosystem. This can disrupt the predator-prey balance, leading to an increase or decrease in certain species populations. It can also impact the availability of resources for other animals in the food chain, potentially causing a chain reaction of consequences throughout the ecosystem.

Currently most of the world's forests are what type?

Currently, most of the world's forests are classified as tropical forests, which are found near the equator and are characterized by high levels of biodiversity. These forests play a crucial role in regulating the Earth's climate and are important habitats for many species of plants and animals.

What is a polymorphic locus?

A polymorphic locus is a specific position on a chromosome where there are two or more alternative forms of a gene (alleles) present in a population. This variation allows for genetic diversity and can influence traits or susceptibility to certain diseases.

What is a scientific term for different types of organisms feeding on the organism before it in a series?

This process is known as a food chain, where organisms in an ecosystem are grouped based on their feeding interactions. Each organism feeds on the one before it in the chain, showing the flow of energy through an ecosystem.

Does algae grow in the photic or aphotic zone?

Algae is a plant, therefore it needs light. The photic zone has light, so that is where algae will grow.

actually algae are of diffrent types red, brown green and yellow.

Green algae and brown algae(stipe and frond) are usually in photic zone however red algae and bluegreen algae also inhabit aphotic zone

On account of presence of pigments r-phycocyanin and r-phycoerythrin red algae can also absorb diffused UV light so can also prepare food in aphotic zone

Do angiosperms have a resin duct?

  • Resin ducts are always known to be present in Conifers as a reaction to wood injuries and prevent pathogenic attacks. Angiosperms also have resin ducts but very rare. One example is the genera Bursera from the family Burseraceae. They are native in some part of US and Southern America. The Burseraceae family consists of shrubs and trees growing mostly in Mexico. Another example is the genera Helianthus which is composed of sunflower species that grows annually in North and South America. Some of its species are also cultured and are also found in some of the Asian countries.

How does the nature-versus-nurture controversy apply to behavior?

The nature-versus-nurture controversy in behavior examines the influence of genetics (nature) versus environment and social experiences (nurture) on individual behaviors. This debate questions whether traits and behaviors are primarily inherited or shaped by external factors like upbringing and experiences. Researchers argue that behavior is a complex interplay between both genetic predispositions and environmental influences.

What is the 10 percent rule in the energy pyramid?

The 10% rule in an energy pyramid is a rule of thumb that states that only about 10% of the energy from one trophic level is passed on to the next trophic level in an ecosystem. This is due to energy lost as heat during metabolism and inefficiencies in energy transfer. It helps explain why there are typically fewer top predators than producers or primary consumers in an ecosystem.

What are two different animals that compete with each other?

Humans and every other kind of animal on/above/below the planet.

In the Northwestern United States, cattle-ranchers & sheep-ranchers have been FEUDING for over 100 years because their livestock compete for forage. Which grows naturally. But fences get mysteriously knocked down & animals cross borders, and sometimes someone gets hurt.

Even the birds and the bees compete for nectar.

How is ecology a new science?

Ecology is now known as "new science" because ecology is weather, climate, temperature, even global warming. It is being known as a "science" because of the global scare that we are having now, with the efficiency, gas/fuel, plants. It's really just what we knew as science but now, it has been categorized with a name.

How long ago did bacteria and archaebacteria diverge from a common ancestor?

It is believed by many that the archaea and bacteria developed separately from a common ancestor nearly 4 billion years ago.

What structure is formed when fertilization occurs?

When fertilization occurs, a structure called a zygote is formed. This is a single cell with a full set of chromosomes, resulting from the merging of the egg and sperm. The zygote will eventually divide and develop into a new organism.

The study of how water quality impacts stream invertebrates is an example of which type of ecology?

This study represents the field of freshwater ecology, specifically focusing on how water quality influences stream invertebrate populations and communities. Understanding these interactions is vital for assessing the health of freshwater ecosystems.

What are different species can share the same habitat but competition among them is reduced if they?

cause Sarah and Cynthia are the best

Sorry, It will not let me delete the first answer.

Competition among two different animals is reduced if they move to different areas of the habitat. An example of this is the Green and Brown Anole Lizards in Southern Florida. (This information is mainly from Science Fusion Holt McDougal Ecology and the Environment.)

What are the adaptation in animals and plants?

Animals have adaptations such as camouflage, mimicry, and hibernation to help them survive in their environments. Plants have adaptations like waxy coatings on leaves, thorns, and deep root systems to help them thrive in different conditions. These adaptations have evolved over time to increase the chances of survival and reproduction in changing environments.

What is the ecological importance of planarians?

Planaria sp. is a common freshwater, non-parasitic member of the phylum Platyhelminthes, class Turbellaria. It should be noted that the term "planaria" is most often used as a common name, much in the same way as trout. It is also the name of a genus within the family Planariidae. It moves by beating cilia on the ventral dermis, allowing it to glide along on a film of mucus. Some move by undulations of the whole body by the contractions of muscles built into the body wall. They exhibit an extraordinary ability to regenerate lost body parts. For example, a Planaria split length wise or crosswise will regenerate into 2 separate individuals. The size ranges from 3 to 12 mm, and the body has two eye-spots (also known as ocelli) that can detect the intensity of light. The eye-spots act as photoreceptors and are used to move away from light sources. Planaria have 3 germ layers (ectoderm, mesoderm, and endoderm), but lack a body cavity or coelom. They have a single-opening digestive tract, consisting of one anterior branch and two posterior branches in freshwater planarians. Because of this three-branched organization, freshwater flatworms are often referred to as triclad planarians.

Planaria are common to many parts of the world and reside in fresh water ponds and rivers. They are also commonly found residing on plants.

The most frequently used in the high school and first-year college laboratories is the brownish Dugesia tigrina. Other common varieties are the blackish Planaria maculata and Planaria dorotocephala. Recently, however, the species Schmidtea mediterranea has emerged as the species of choice for modern molecular biological and genomic research due to its diploid chromosomes and existence in both asexual and sexual strains. Recent genetic screens utilizing double-stranded RNA technology have uncovered 240 genes that affect regeneration in S. mediterranea. Interestingly, many of these genes are found in the human genome (see link below).
Contents
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* 1 Organ Systems
* 2 See also
* 3 External links
* 4 References

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Organ Systems

The planarian has very simple organ systems. The digestive system consists of a mouth, pharynx, and an intestine. The mouth is located in the center of the underside of the body. Digestive enzymes sercrete from mouth to begin external digestion. The pharynx connects the mouth to the intestines. The intestines of the Planaria branch throughout the body. They eat living or dead small animals which they suck with their muscular mouth. From there the food passes through the pharynx into the intestines and digesting of the food takes place in the cells lining the intestine, which then diffuses to the rest of the body. The undigested food leaves through the pharynx and mouth.

Planaria receive oxygen and release carbon dioxide by diffusion. The excretory system is made of many tubes with many flame cells and excretory pores on them. Flame cells remove unwanted liquids from the body by passing them through ducts that lead to excretory pores where the waste is released on the dorsal surface of the planarian.

At the head of the planarian there is a brain under the eyespots. From the brain there are two nerve cords which connect at the tail. There are many transverse nerves connected to the nerve cords which make it look like a ladder. With a ladder-like nerve system it is able to respond in a coordinated manner.

A planarian can reproduce either asexually or sexually. In asexual reproduction the planarian detaches its tail end and each half regrows the lost parts. In sexual reproduction each Planaria gives and receives sperm. Planaria have both testes and ovaries. Eggs develop inside the body and are shed in capsules. Weeks later the eggs hatch and grow into adults. Planarians can also reproduce by regeneration. If a Planaria is cut into two halves both halves may become two new Planaria (regeneration). In one experiment, T.H. Morgan found that a piece corresponding to 1⁄279th of a planarian could successfully regenerate into a new worm. This size (about 10,000 cells) is typically accepted as the smallest fragment that could regrow into a new planarian. Source(s):That's what I found...www.wikipedia.org

In biology what does control mean?

In biology, a control is a standard used for comparison in an experiment to ensure that any changes observed are due to the factor being tested and not other variables. Controls help to minimize the impact of confounding variables and confirm the validity of experimental results by providing a baseline for comparison.

What is the effect of exponential growth on population?

In exponential growth, the number of individuals in a population grows rapidly. With more individuals comes an increased demand for resources, food, competition, etc. There is never an unlimited amount of such resources, so a population growing exponentially is eventually limited by the amount the population can take from its environment. This limitation -- the point that a population exceeds its means -- is called the carrying capacity. Sometimes an exponentially-growing population will grow past its carrying capacity for a time before dipping back down and leveling off. In some cases (like with humans), the carrying capacity can be pushed further and further with adaption (or with humans-- innovation).

Why is decomposition important to organisms in habitats such as the leaf litter?

Is this your homework? Because my worksheet has exactly the same questions as yours.

Oh yeah, and that's mine question too, so please give an answer ._. perhaps we are all from the same school... ~LJTG


har har har. was so excited to c this answer but turned out to be just *this*. well i guess the organisms feed on the decomposing matter...or they are detrivores or they r the decomposers. just listing out possibilities. ._.

How does adaptations influences distribution of plants and animals?

Adaptations influence distribution of plants and animals because they adapt to their envirenment, examples include the camel, the lobster, the polar bear, and the seal. Over time, an animal changes to meet its needs.