1.
What is a habitat?
Correct Answer
A. The place where an organism lives.
Explanation
The correct answer is "The place where an organism lives." This answer accurately defines a habitat as the specific location or environment where an organism naturally lives and thrives. It refers to the physical space, including the climate, vegetation, and other factors, that provides the necessary resources and conditions for an organism's survival and reproduction.
2.
What is an adaptation?
Correct Answer
B. A structure or behavior that helps and organism survive in its environment.
Explanation
An adaptation is a structure or behavior that helps an organism survive in its environment. This can include physical features, such as camouflage or sharp claws, as well as behavioral traits, like migration or hibernation. Adaptations allow organisms to better compete for resources, avoid predators, and reproduce successfully, increasing their chances of survival.
3.
________________ are organisms that eat food (other organisms).
Correct Answer
A. Consumers
Explanation
Consumers are organisms that eat food, which can be other organisms. They obtain energy by consuming and breaking down organic matter from their environment. This energy is then used for their own growth, reproduction, and other metabolic processes. Consumers play a crucial role in the food chain as they obtain energy from producers (such as plants) or other consumers. They are distinct from producers, which are organisms that produce their own food through photosynthesis or chemosynthesis. Predators and prey are specific types of consumers, with predators consuming other organisms and prey being consumed by predators.
4.
In some areas, deer have very few predators. As a result, the deer population ________________.
Correct Answer
B. Increases
Explanation
In areas where deer have very few predators, the lack of natural enemies allows the deer population to grow unchecked. Without predators to keep their numbers in check, the deer population increases over time.
5.
Populations often ____________ when there is not enough food, water, and space to live.
Correct Answer
B. Decrease
Explanation
Populations often decrease when there is not enough food, water, and space to live. This is because limited resources cannot support a large number of individuals, leading to competition for these resources. As a result, some individuals may not be able to find enough food or space to survive, leading to a decrease in population size.
6.
When people go grocery shopping, they are
Correct Answer
B. Getting food from their habitat.
Explanation
The correct answer is "getting food from their habitat" because when people go grocery shopping, they are typically purchasing food items that they need to sustain themselves. The term "habitat" refers to the natural environment or surroundings in which a particular species or organism lives, and in this context, it implies that people are obtaining their necessary food supplies from the grocery store, which serves as a modern-day habitat for acquiring food.
7.
Why do beavers build dams?
Correct Answer
B. To protect themselves from their enemies.
Explanation
Beavers build dams to protect themselves from their enemies. Dams provide a safe and secure habitat for beavers by creating a deep pond that acts as a moat around their lodge, making it difficult for predators to reach them. The construction of dams also helps to regulate water levels, which further protects the beavers' lodge and provides them with easy access to food sources. By creating a barrier, beavers can control the flow of water and create a more favorable environment for their survival.
8.
These organisms have adaptations:
Correct Answer
D. All of the above
Explanation
All of the listed organisms (redwood tree, fish, mountain goat) have adaptations that help them survive and thrive in their respective environments. The redwood tree has adaptations such as its tall height and fire-resistant bark, which allow it to compete for sunlight and withstand wildfires. Fish have adaptations like gills and streamlined bodies that enable them to breathe and swim efficiently in water. Mountain goats have adaptations such as strong hooves and specialized lungs that help them navigate steep and rocky terrains. Therefore, all of the listed organisms have adaptations that contribute to their survival.
9.
Animals with thick fur and long hair are adapted to _________ environments.
Correct Answer
C. Cold
Explanation
Animals with thick fur and long hair are adapted to cold environments because their fur acts as insulation, trapping heat close to their bodies and keeping them warm. In cold environments, this adaptation helps them to maintain their body temperature and survive in low temperatures.
10.
The ______________ of a redwood tree protects it from fire.
Correct Answer
C. Thick bark
Explanation
The thick bark of a redwood tree protects it from fire because it acts as a barrier, preventing the flames from reaching the inner layers of the tree. The bark is composed of layers of dead cells that are rich in fire-resistant compounds, such as tannins. This insulation helps to shield the living tissues of the tree from the intense heat of a fire, allowing the redwood to survive and regenerate even in fire-prone environments.
11.
A green plant makes its own food so it is a ________________.
Correct Answer
A. Producer
Explanation
A green plant is able to make its own food through the process of photosynthesis, using sunlight, water, and carbon dioxide. This ability to convert inorganic substances into organic compounds makes it a producer. Producers are organisms that produce their own food and form the base of the food chain, providing energy for other organisms in the ecosystem.
12.
Every living thing is:
Correct Answer
D. All of the above
Explanation
All of the options provided in the question are valid descriptions of every living thing. Every living thing is a link in the food chain, as they either consume other organisms or are consumed by others. They are also organisms themselves, as they are living entities with the ability to grow, reproduce, and respond to stimuli. Additionally, every living thing is either a producer or consumer, as they either produce their own food through photosynthesis (producers) or consume other organisms for energy (consumers). Therefore, the correct answer is "all of the above."