Ecology2

Please answer all questions. You may use your notes and text book.
Please work alone on this test.

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Biology Group:

1: Nitrosomas bacteria are involved in: Nitrogen fixation
Denitrification
Leaching
Excretion
Assimilation
Deamination
Nitrification
2: Examine the image below. What lives inside the nodules?: Nitrosomas
Nitrobacter
Rhizobium
Cyanobacteria
Decomposers
3: The bacteria that are responsible for nitrogen fixation within legumes are: Anaerobic
Aerobic
Faculative anaerobes
4: Examine the following food web. Name a primary consumer.: Garter snake
Grasshopper
Hawk
Hognose Snake
Sparrow
Toad
Grass
5: Name a tertiary consumer: Preying mantis
Spider
Grass
Rabbit
Hawk
6: Name a quarternary consumer: Mouse
Garter snake
Hawk
Rabbit
Hognose snake
Sparrow
Preying Mantis
7: What process is responsible for creating gaseous nitrogen?: Nitrogen fixation
Deamination
Nitrification
Denitrification
Excretion
Ammonification
Uptake
8: What is the 'energy currency' of the cell?: Glucose
Simple sugar
Adenosine triphosphate
Sucrose
Monosacharide
ADP
Hexose sugar
9: What word describes the role of an organism in the ecosystem?
10: Plants convert approximately ________ of the energy in sunlight into energy stored in a chemical form.: 1%
3%
5%
10%
40%
45%
11: Which of the following best explains the low level of efficiency of energy conversion by producers?: Much of them is indigestible.
Larg losses in heat and respiration
Energy lost through movement
Energy lost throgh excretion
Light falling on non-photosynthetic surfaces
12: Examine the following diagram. What term best describes the base of the food web?: Producer
decomposer
Green plants
A symbiotic partner
A herbivore
A parasite
Detritus
13: NO₂^- is known as: Nitrate
Nitrite
Ammonia
Organic nitrogen
Urea
Ammino acids
14: Green plants are also referred to as
15: What term is used to describe the collection of same-species organisms which are found living together in the same place at the same moment in time, and which are able to successfully interbreed?
16: Examine the diagram below. How many trophic levels are there?: None in this food web
One large one
Two
Three
Four
None- it's a pyramid
17: All of the organisms in the above diagram represent a: Population
Habitat
Species
Niche
Group
Flock
Community
18: The arrows between organisms show the movement of: Nutrients
Nitrogen
Carbon
Water
Energy
Vitamins
Minerals
19: What type of extremely strong bond is found within a molecule of nitrogen N₂: Triple Ionic
Hydrogen
Covalent
20: What term describes the production of ammonia NH₄⁺
21: Which of the following best describes the place where organisms live?: Niche
Ecosystem
Population
Community
Habitat
22: ATP is directly released in the process of: Ammonification
Respiration
Nitrification
Denitrification
Photosynthesis
Nitrogen fixation
23: Examine the image below. What does it show?: Nitrogen fixation
Ammonification
Nitrification
Denitrification
Excretion
Decomposition
24: What is NH₄⁺ the equation for?: Ammonia
Nitrate
Nitrite
Urea
Amino acid
Inorganic nitrogen
25: Which term refers to the total amount of energy transferred by plants from sunlight to chemical energy?: Gross primary productivity
Net primary productivity
26: The relationship between Rhizobium and a legume is best described as: Competitive
Parasitic
Mutualism
Photosynthetic
27: What one word is the name of the process which is used industrially to convert nitrogen gas to fertilizer?
28: The organisms that carry out nitrogen fixation are: Plants
Eukaryotes
Fungi
Prokaryotes
29: The conversion of NO₃^- to N₂ is known as: Nitrogen fixation
Ammonification
Nitrification
Excretion
Decomposition
Leaching
Denitrification
30: Nitrate or amino acids, are transported around plants in the: Xylem vessels
Phloem vessels