24/25 Relationships Study Guide Flashcards

Front

An organism that makes its own food is a producer or...

Back

autotroph

Answer explanation

An organism that can make its own food is called an autotroph. This term refers to producers that synthesize organic compounds from carbon sources, unlike heterotrophs, which rely on others for food.

Front

An organism that cannot produce its own food is a consumer or...

Back

heterotroph

Answer explanation

An organism that cannot produce its own food is called a heterotroph. Unlike autotrophs, which make their own food, heterotrophs rely on consuming other organisms for energy.

Front

Organisms arranged by feeding relationships, starting with producers, is called a

Back

food chain

Answer explanation

A food chain is a linear sequence of organisms where each is eaten by the next, starting with producers. It clearly shows the feeding relationships, unlike a food web, which is more complex and interconnected.

Front

Classification of feeding relationships in a forest ecosystem.

Back

trophic level

Answer explanation

The classification of feeding relationships among organisms is called trophic levels. It categorizes organisms based on their role in the food chain, such as producers, consumers, and decomposers.

Front

Lion hunts deer in forest.

Back

predator/prey

Answer explanation

The relationship between a lion and a deer is described as predator/prey, where the lion (predator) hunts the deer (prey) for food. This term accurately captures the dynamics of this interaction.

Front

Positive symbiosis where both organisms benefit:

Back

mutualism

Answer explanation

Mutualism is a positive type of symbiosis where both organisms benefit from the relationship. In contrast, predation, parasitism, and commensalism involve one organism benefiting at the expense of the other.

Front

Bird builds nest in tree, gaining shelter; tree unaffected. Type of symbiosis:

Back

commensalism

Answer explanation

The bird benefits from the tree by using it for shelter, while the tree is neither helped nor harmed. This relationship is an example of commensalism, where one species benefits and the other is unaffected.

Front

Insects stealing nutrients from plants in a garden is an example of:

Back

parasitism

Answer explanation

The situation describes a negative interaction where the insect harms the plants by stealing nutrients. This is known as parasitism, where one organism benefits at the expense of another.

Front

Energy transfer between trophic levels is about ____.

Back

10%

Answer explanation

In ecological terms, only about 10% of the energy from one trophic level is transferred to the next. This is known as the 10% rule, which explains why higher trophic levels have fewer organisms.

Front

Predator hunts and kills another organism to consume it.

Back

Predator-Prey

Answer explanation

The correct choice is 'Predator-Prey' because it describes the relationship where a predator hunts and kills another organism for food, which aligns with the definition provided.