1.
This is a consumer that eats only plants
Correct Answer
A. Herbivore
Explanation
A consumer that eats only plants is called a herbivore. Herbivores obtain their energy by consuming plant material, such as leaves, stems, and fruits. They have specialized digestive systems that allow them to break down and extract nutrients from plant matter. Unlike decomposers, which break down dead organic material, and scavengers, which feed on dead animals, herbivores rely solely on plants as their source of food. Continental drift, on the other hand, refers to the movement of Earth's continents over time.
2.
This is an organism that can make its own food.
Correct Answer
B. Producer
Explanation
A producer is an organism that can make its own food through the process of photosynthesis. They have the ability to convert sunlight, water, and carbon dioxide into glucose, which serves as their source of energy. Examples of producers include plants, algae, and some types of bacteria. These organisms play a crucial role in ecosystems as they form the base of the food chain, providing energy for other organisms.
3.
This is a series of events in which an organism eats another to get energy.
Correct Answer
C. Food chain
Explanation
A food chain is a series of events in which one organism eats another organism to obtain energy. It represents the flow of energy through different trophic levels in an ecosystem. Each organism in the chain is either a producer, consumer, or decomposer. Producers, such as plants, convert sunlight into energy through photosynthesis. Herbivores then consume these producers, followed by carnivores that eat the herbivores. Lastly, decomposers break down the remains of dead organisms, returning nutrients to the environment. The food chain is crucial for the transfer and cycling of energy within an ecosystem.
4.
This occurs in an area where no ecosystem preciously existed
Correct Answer
B. Primary succession
Explanation
Primary succession refers to the process of ecological succession that occurs in an area where no ecosystem previously existed. It typically starts in barren or lifeless environments such as newly formed volcanic islands, bare rock surfaces, or areas that have been completely destroyed by natural disasters. In primary succession, pioneer species such as lichens and mosses gradually colonize the area and begin to break down rocks, creating soil. Over time, more complex plant species and eventually animal species establish themselves, leading to the development of a stable and diverse ecosystem. Therefore, the given answer is primary succession.
5.
Humans are this type of consumer
Correct Answer
A. Omnivore
Explanation
An omnivore is a type of consumer that has the ability to consume both plants and animals. Humans are considered omnivores because they have the capability to eat a wide variety of foods, including fruits, vegetables, grains, meat, and dairy products. This dietary flexibility allows humans to obtain a diverse range of nutrients and energy sources from different food groups.
6.
An organism that gets energy by feeding on other organisms
Correct Answer
A. Consumer
Explanation
A consumer is an organism that obtains energy by feeding on other organisms. This means that it consumes other living organisms as a source of food. Consumers are an important part of the food chain and play a vital role in transferring energy from one trophic level to another. They can be herbivores, carnivores, or omnivores, depending on their diet. Through consumption, consumers obtain the energy they need for survival and growth. Therefore, the term "consumer" accurately describes an organism that gets energy by feeding on other organisms.
7.
A consumer that eats only animals
Correct Answer
D. Carnivore
Explanation
A carnivore is a consumer that eats only animals. This means that it obtains its energy and nutrients by consuming other animals. Unlike herbivores, which eat only plants, and omnivores, which eat both plants and animals, carnivores have specialized teeth and digestive systems adapted for hunting and consuming meat. They rely on the energy and nutrients found in animal tissues to survive and thrive.
8.
This consists of many overlapping food chains in an ecosystem
Correct Answer
A. Food web
Explanation
A food web consists of many overlapping food chains in an ecosystem. It represents the complex network of interactions among various organisms in an ecosystem, showing how energy and nutrients flow through different trophic levels. Unlike a food chain, which only shows a linear sequence of who eats whom, a food web includes multiple interconnected food chains, illustrating the interdependence and complexity of the relationships between different species in an ecosystem.
9.
These are organisms that break down wastes and dead organisms
Correct Answer
C. Decomposer
Explanation
Decomposers are organisms that break down wastes and dead organisms. They play a crucial role in recycling nutrients back into the ecosystem. They break down organic matter into simpler forms, such as carbon dioxide and water, releasing nutrients that can be used by other organisms. Unlike carnivores, which feed on other animals, and scavengers, which consume dead animals, decomposers primarily feed on decaying organic matter. They are essential for the functioning of ecosystems by helping to maintain nutrient cycles and the overall balance of the ecosystem.
10.
This is a carnivore that feeds on dead organisms
Correct Answer
B. Scavenger
Explanation
A scavenger is an organism that feeds on dead organisms. They play an important role in the ecosystem by helping to decompose dead matter and recycle nutrients back into the environment. Scavengers are typically carnivores and rely on carrion, or dead animals, as their primary food source. They help to clean up the environment by consuming dead organisms that would otherwise accumulate and potentially spread disease. This behavior is different from herbivores, which eat plants, and producers, which are organisms that can produce their own food through photosynthesis.
11.
This shows the amount of energy that moves from one feeding level to another
Correct Answer
A. Energy pyramid
Explanation
An energy pyramid is a graphical representation that shows the flow of energy from one feeding level to another in an ecosystem. It illustrates the decrease in energy as it moves up the food chain, with each level consuming and utilizing a portion of the energy from the level below. The energy pyramid helps to visualize the transfer of energy and the efficiency of energy transfer between trophic levels in an ecosystem.
12.
This is a series of changes that occurs after a disturbance happens on an ecosystem
Correct Answer
A. Secondary succession
Explanation
Secondary succession is the correct answer because it refers to the series of changes that occur after a disturbance, such as a fire or flood, has disrupted an existing ecosystem. In secondary succession, the ecosystem rebuilds itself using the soil and remaining organisms as a starting point. This process differs from primary succession, which occurs in areas where no soil or organisms exist, such as after a volcanic eruption. Food chain and food web, on the other hand, refer to the flow of energy and nutrients within an ecosystem and are not specifically related to the sequence of changes after a disturbance.
13.
This is the movement of organisms from one place to another
Correct Answer
A. Dispersal
Explanation
Dispersal refers to the movement of organisms from one place to another. This can occur through various means such as wind, water, or by the organisms themselves. Dispersal is an important process for the survival and colonization of new habitats. It allows organisms to find new resources, escape competition or predation, and establish new populations in different areas. Therefore, dispersal is the most suitable answer for the given question.
14.
One of the three ways plants can be dispersed:
Correct Answer
wind
water
other living things
Explanation
Plants can be dispersed through various methods, and one of them is through wind. Wind dispersal occurs when plants have lightweight seeds or fruits that can be easily carried away by the wind to new locations. Another way plants can be dispersed is through water. This method is common for plants that produce buoyant seeds or fruits, which can float on water and be transported to different areas. Lastly, plants can also be dispersed through other living things like animals. Some plants have adaptations to attract animals that help in seed dispersal, such as sticking to fur or being eaten and excreted by animals in different locations.
15.
One of the three ways dispersal can be limited:
Correct Answer
physical barriers
competition
climate
Explanation
Dispersal can be limited by physical barriers, such as mountains or bodies of water, which prevent the movement of individuals or populations. Competition between species can also limit dispersal, as individuals may struggle to find suitable resources or space in areas already occupied by other organisms. Climate can also play a role in dispersal limitation, as certain species may not be able to survive or reproduce in environments with extreme temperatures or precipitation patterns. Therefore, dispersal can be limited by physical barriers, competition, and climate.