Vocabulary
Which of the following is considered a biotic factor in an ecosystem?
Temperature that affects how fast plants grow
B. A stream that provides water for animals
C. A bird that nests in a tree
D. The sunlight used by plants during photosynthesis
C. A bird that nests in a tree
Scenario 1: Habitat Loss
Urban development and agriculture are leading to significant habitat loss for Grevy's zebras, reducing their natural living spaces.
What is a direct effect of habitat loss on Grevy's zebras?
A)Decreased food and shelter availability
How do the physical differences of Grevy’s zebras—such as larger ears and narrower stripes—likely help them adapt to their environment compared to other zebra species?
The larger ears of Grevy’s zebra help with heat regulation and better hearing, which is useful for detecting predators in open environments. Their narrower stripes may provide more precise camouflage in grasslands by blending with light and shadow patterns. Being taller also helps them see over grass more easily.
Their large ears help release body heat, which keeps them cool in the hot, arid climates of Kenya and Ethiopia. The ears also improve hearing, allowing them to detect predators from far away.
Their narrow stripes may help them blend into the dry grass and create visual confusion for predators, making it harder to single them out.
Together, these traits improve their ability to stay cool, avoid danger, and survive in environments with limited water and high temperatures.
What does this describes?
Types of Zebras
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Which of these would NOT be classified as an abiotic factor?
A. Wind that spreads seeds
B. Rocks that shelter animals
C. Decomposing log filled with fungi
D. Water that shapes the land
C. Decomposing log filled with fungi
Scenario 2: Poaching for Skins
Grevy's zebras are hunted for their unique skins, which are sold in illegal markets, threatening their population.
What consequence does poaching have on the zebra population?
A) Population growth
B)Improved habitat conditions
C) Increased risk of extinction
C) Increased risk of extinction
Given their size range (350–450 kg), what advantages and disadvantages might this body mass create in the grassland and savanna ecosystems of Kenya and Ethiopia?
Their large body mass gives them an advantage in deterring predators and traveling long distances for water, which is important in dry regions like Kenya and Ethiopia. However, it also means they require more food and water, which can be a disadvantage during droughts or when resources are scarce.
How do the physical traits and social behavior of Mountain zebra help it survive in the mountainous regions of South Africa, Namibia, and Angola?
The physical traits and social behavior of Mountain zebra help it survive in rugged, mountainous environments.
Their stockier build gives them strength and stability, which helps them move safely across steep, rocky terrain in places like South Africa, Namibia, and Angola. The grid-like stripe pattern may help with camouflage among rocks and shadows.
Their social structure—living in family groups—provides protection. Group members can watch for predators, defend each other, and care for young, increasing their chances of survival in challenging habitats.
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Why is reproduction essential for a species’ survival?
A. It increases biodiversity in the ecosystem
B. It allows the ecosystem to cycle nutrients
C. It ensures the species does not go extinct
D. It helps animals adapt to new environments
C. It ensures the species does not go extinct
Scenario 3: Competition with Livestock
As more livestock are introduced into their habitats, Grevy's zebras are competing for food and water resources.
How does competition with livestock impact Grevy's zebras?
A) They find more food
B) They may migrate to new areas
C) They become more aggressive
B) They may migrate to new areas
Why might having larger ears be beneficial for survival in hot, open habitats like savannas?
Larger ears help release excess body heat, which is critical in hot savanna climates. They also improve hearing, allowing zebras to detect predators from farther away, increasing their chances of survival.
How do the habitat range and social behavior of Plains zebra help it survive across the savannas and grasslands of eastern and southern Africa?
The wide habitat range of Plains zebra allows it to live in both savannas and grasslands, giving it flexibility to find food and water in different environments. This adaptability increases its chances of survival, especially when conditions change.
Their highly social behavior—living in large herds—provides strong protection against predators. With many individuals watching for danger, zebras can detect threats more quickly. Herds also confuse predators, making it harder to target one animal. Additionally, group living helps them find resources and care for young more effectively.
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What does it mean when a species is facing extinction?
A. Its population is migrating to other regions
B. . It is no longer able to reproduce successfully
C. It is no longer able to represent the spices
D. It has no living members left anywhere on Earth
b. It is no longer able to reproduce successfully
Scenario 4: Climate Change
Climate change is altering weather patterns, resulting in unpredictable rainfall and droughts.
What effect does climate change have on Grevy's zebras?
A) Increased access to water
B) Scarcity of food and water
C) Improved reproductive rates
B) Scarcity of food and water
Considering their height and body structure, how might Grevy’s zebras compete with other herbivores for food resources?
Their height and strong bodies allow them to reach and process tougher grasses that smaller herbivores might not eat. However, their higher food needs mean they must compete more intensely with other grazing animals, especially in areas with limited vegetation.
How do human activities such as deforestation, pollution, and climate change threaten ecosystem services, and why is it important to prioritize conservation and restoration efforts to protect them?
Human activities like deforestation, pollution, urbanization, and climate change damage ecosystems by destroying habitats, reducing biodiversity, and disrupting natural processes. This weakens the ability of ecosystems to provide important services such as clean air, water purification, food production, and climate regulation.
It is important to prioritize conservation and restoration because healthy ecosystems support all life on Earth, including humans. By protecting biodiversity and managing ecosystems sustainably, we help ensure that these essential services continue to function for future generations.
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Which of the following best describes a biome?
A. A local population of one species living together
B. A small community of organisms sharing a niche
C. A group of ecosystems with similar climate and life forms
D. A relationship between predators and prey in an area
C. A group of ecosystems with similar climate and life forms
Scenario 5: Low Reproductive Rate
Grevy's zebras have a low reproductive rate, making population recovery difficult after declines.
What is a consequence of a low reproductive rate?
A) Faster population growth
B) Increased vulnerability to extinction
C) More resources available
B) Increased vulnerability to extinction
How could the narrower stripe pattern of Grevy’s zebras influence predator-prey interactions compared to zebras with wider stripes?
What is a likely effect of losing biodiversity in an ecosystem?
A) The ecosystem becomes more stable and resilient
B) The ecosystem may become more vulnerable to disturbances
C) The ecosystem produces more ecosystem services
D) The ecosystem no longer depends on food chains
Correct answer: B) The ecosystem may become more vulnerable to disturbances
When biodiversity is lost, there are fewer species to fill important roles like pollination, decomposition, and predation control. This makes the ecosystem less stable and less able to recover from changes such as disease outbreaks, climate shifts, or habitat damage.
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