Bio Unit 5

What are the goals of science?

- to investigate and understand the natural world - to explain events in the natural world - to use derived explanations to make useful predictions

If there is 100% of energy available for the producers, what percentage is available for the secondary consumers?

1%

A farmer observed that an increase in a field's soil nitrogen content was followed by an increase in producer productivity. What does this observation MOST LIKELY indicate about the relationship between nitrogen and the producers in the field?

Nitrogen was a limiting factor

The pitcher plant and Venus fly trap plant have leaves that are modified to catch insects. In cacti plants, the leaves are shaped like spines. Leaves on each of these plants are homologous structures. What type of evidence does the presence of homologous structures provide?

Plants have evolved from a common ancestor

Which of the following are homologous structures?

A birds wing and your arm

A scientist observed that birds of different species in a certain area have many similar physical characteristics. This supports the hypothesis that these birds

descended from a common ancestor.

The characteristic of an individual that is necessary to the survival of the species but NOT to the survival of that individual is

reproduction

most fossils form in

sedimentary rock

The development of an experiment should NOT include a

Conclusion based on data expected to be collected

: A student listed characteristics of a classroom aquarium ecosystem. Which characteristic is a biotic component of the aquarium ecosystem?

The ammonia is controlled with a filter that uses two types of bacteria.