Question 1

Competition between individuals of the same species can have effects on their ________.

Accepted Answer

Competition can affect all aspects of an individual's life, including survival, growth, reproduction, and access tomates. When resources such as food, water, or shelter are limited, individuals must compete to obtain these resources. This competition can lead to differences in survival rates, growth rates, and reproductive success, as those individuals who are better adapted or more skilled at obtaining the necessary resources are more likely to thrive. Additionally, competition for mates can be intense in some species, and individuals who are able to outcompete others for access to mates may have a greater chance of passing on their genes to future generations.

Question 2

Conditions are physiochemical features of the environment,such as:

Accepted Answer

Temperature, humidity, and salinity are all physiochemical features of the environment, while prey density is a biotic factor. Therefore, the best choice(s) are A, B, D.

Question 3

On a whale watching trip you observe dolphins feeding on fish.What type of heterotroph is the dolphin in this example?

Accepted Answer

Dolphins are predators, as they hunt and feed on other animals (in this case, fish). Grazers typically eat plant material, decomposers break down dead organic matter, and parasites feed on a host organism without killing it. None of these descriptions fit with the behavior of dolphins observed in this scenario.

Question 4

Which two answers describe how grazers interact with prey?

Accepted Answer

Grazers typically consume parts of many prey organisms without necessarily killing them, as seen in animals that feed on grass or leaves, which can regrow. This contrasts with predators that usually kill their prey. Grazers do not feed exclusively on plants; the term can apply to any organism that feeds on a large number of prey items without killing them, though it is commonly associated with herbivores.

Question 5

Which of the following are examples of defense mechanisms?

Accepted Answer

The answer of Which of the following are examples of...

Question 6

If you wanted to eat something with a high C:N ratio,which of the following would you select?

Accepted Answer

Vegetarian salads typically have a high C:N ratio due to the presence of plant-based materials with high carbon content and low nitrogen content.

Question 7

Oak tree species are quite abundant in the southern California landscape.These species are long-lived,even though they experience drought.What would you predict their root structure to be like?

Accepted Answer

Oak trees, especially those adapted to environments like southern California where droughts are common, typically have a very deep root structure. This allows them to access water stored deep in the soil, supporting their long-term survival and growth in such challenging conditions.

Question 8

According to Figure 3.27,glucosinolates in the petals and leaves of wild radish:

Accepted Answer

The answer of According to Figure 3.27,glucosinolates in the petals...

Question 9

Which of the following are examples of heterotrophs:

Accepted Answer

Heterotrophs are organisms that obtain their energy by consuming other organisms. This includes grazers, parasites, decomposers, and predators. Therefore, all of the options listed are examples of heterotrophs.

Question 10

Conditions can affect disease dynamics.A grasshopper species will escape serious infection by a fungal pathogen by modifying what condition?

Accepted Answer

The grasshopper species can escape serious infection by the fungal pathogen by modifying its body temperature, and it does so by basking. This is because the fungal pathogen requires cool and moist conditions to grow and spread. By modifying its body temperature, the grasshopper can create an environment that is less suitable for the pathogen to grow, reducing the risk of infection.

Question 11

Which is NOT a type of heterotroph?

Accepted Answer

The answer of Which is NOT a type of heterotroph?
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Question 12

Which waste products from an organism would be most rich in carbon?

Accepted Answer

Deer are herbivores and their waste products, such as feces and urine, contain a lot of plant material that they have digested. Plants are rich in carbon as they use carbon dioxide during photosynthesis to make their own food. Therefore, the waste products of a deer would be most rich in carbon compared to carnivores like mountain lions or killer whales.

Question 13

Organisms will consume _______ during the course of their growth and reproduction

Accepted Answer

Organisms consume environmental resources, such as water, nutrients, and space, to support their growth and reproduction. Conditions, on the other hand, refer to the environmental factors that can influence an organism's survival but are not consumed.

Question 14

Which of the following are descriptions of the response of an organism to temperature,as seen in Figure 3.1a?

Accepted Answer

Figure 3.1a shows a bell-shaped curve for growth rate as temperature increases, indicating that high temperatures can be lethal (choice A) and that the decrease in growth rate becomes greater as temperature gets colder (choice B). Reproduction is not clearly shown as a factor in this graph, so choices C and D are incorrect.

Question 15

Morphological examples of crypsis include

Accepted Answer

Crypsis involves adaptations that help an organism avoid detection. This can include resembling inedible parts of the environment (B), matching the color of the environment (C), or having patterns that disrupt their outline (D). Bright coloration (A) is typically not associated with crypsis.

Question 16

You come across a plant that thrives in water-logged conditions.What structure of roots would you expect this plant to have?

Accepted Answer

Plants that thrive in water-logged conditions typically have a shallow root structure because they do not need to reach deep into the soil to find water. The water is readily available at or near the surface, so a deep root system is unnecessary.

Question 17

If a plant's fitness is largely influenced by how well leaves survive,then which of the following predictions regarding chemical defenses is correct?

Accepted Answer

If a plant's fitness is largely influenced by how well leaves survive, then it is likely that the plant will prioritize investing the most costly constitutive chemicals in leaves to defend and protect them. This will improve the survival and health of the leaves, which in turn, will contribute to the overall fitness of the plant. Petals, on the other hand, serve primarily as attractive structures for pollinators and do not directly contribute to the plant's survival, so it is less likely that plants will invest the most costly constitutive chemicals in petals.

Question 18

A mimic is a species that:

Accepted Answer

The answer of A mimic is a species that:
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Question 19

Which term refers to a strategy whereby organisms obtain energy by oxidizing methane,ammonium ions,hydrogen,or ferrous iron?

Accepted Answer

Chemosynthesis is a strategy where organisms obtain energy by oxidizing methane, ammonium ions, hydrogen or ferrous iron. Chemotaxis refers to the movement of cells in response to a chemical stimulus, while chemotherapy refers to the use of drugs to treat disease. Therefore, the correct answer is B.

Question 20

Temperature,humidity,amount of precipitation,and water pH are examples of __________.

Accepted Answer

Temperature, humidity, amount of precipitation, and water pH are all physiochemical features of the environment that are referred to as conditions. They are important factors that can influence the growth, survival, and reproduction of organisms in an ecosystem. Lethal environmental variables would refer to factors that can cause harm to organisms, while physiochemical resources are the physical or chemical substances that organisms need to survive, such as oxygen or nutrients.

Quiz 3: Physical Conditions and the Availability of Resources