Aquatic ecosystems are very simple.

False, they include salt water with unexplored depths.

Fossils are defined as evidence of organisms from at least 5,000 years ago.

False, fossils are at least 10,000 years old.

Primary productivity is highest in ____.

areas generating the most biomass

Which is true about the global nutrient cycle?

It is impacted by living organisms.

Modern farming techniques enhance genetic diversity.

False, modern farming focuses on productivity.

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CH 44

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#ecology #biosphere

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Questions 15

Answers

1
Aquatic ecosystems are very simple.
False, they include complex animals but not plants.
True, there is nothing left to discover.
None of these answers are correct.
False, they include salt water with unexplored depths.
2
Which is NOT an ethical concern involving biology around the world?
inability to obtain needed medicine
services that exclude citizens without wealth
creation of equity genes
discrimination against those who inherit disease genes
3
The distribution of nutrients is driven by ____.
abiotic factors
none of these
biotic factors
both of these
4
When a species ceases to exist, it is _____.
both
endangered
neither
extinct
5
Which of the following is an abiotic factor?
neither
both
temperature
latitude
6
Fossils are defined as evidence of organisms from at least 5,000 years ago.
False, fossils are at least 10,000 years old.
True, but no fossils have been found.
False, there is no evidence that old.
True, and fossils are any type of evidence.
7
Primary productivity is highest in ____.
tundra
areas with wet forests
desserts
areas generating the most biomass
8
The study of ecosystems can involve ____.
All of these
molecules
aquatic biomes
terrestrial biomes
9
Which is true about the global nutrient cycle?
All of these are true.
The cycle is sustained by predators.
Global nutrient cycles hare not impacted by bacteria.
It is impacted by living organisms.
10
Ecology includes
molecular biology and climatology
aquatic and terrestrial biomes
physiology, biodiversity and mathematical models
all of these!
11
What is a unique feature that distinguishes plant cells from insect cells?
nucleus
none of these are unique
chloroplasts
mitochodria
12
Modern farming techniques enhance genetic diversity.
False, we enhance animal species but not plant species.
True, animals breed across species.
True, we have more species now than ever.
False, modern farming focuses on productivity.
13
What makes you look different from your siblings (not your twin)?
All of these
Crossing over
Independent assortment
Segregation
14
Which of the following can be a barrier to reproduction?
inability of egg and sperm to fuse
water, such as oceans or rivers that separate land species
land forms, like mountains or gorges
All of these are barriers.
15
Which of these are biotic factors?
neither
both
Fungi
Bacteria

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