This Structure, Present in the Cow Eye but Not in the Human

question 21

Multiple Choice

This structure, present in the cow eye but not in the human eye, is a special iridescent reflecting surface that helps animals to see in low light conditions.

• A)pigmented sclera
• B)ciliary body
• C)vascular layer
• D)tapetum lucidum

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Definitions:

Human Overharvesting

The excessive harvesting of natural resources which leads to the depletion of those resources and a loss of biodiversity.

Top of Ocean Food Chains

Predators that occupy the highest trophic levels in marine ecosystems, controlling the population and health of the ecosystem indirectly.

Predators

Animals that hunt, kill, and consume other organisms for food.

Invasive Species

Non-native organisms that spread rapidly in new environments, often causing harm to native species, human health, and economies.