Biology quiz - Enviroment

Bronte Penney
Quiz by , created almost 6 years ago

Quiz on Biology quiz - Enviroment, created by Bronte Penney on 12/29/2013.

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Bronte Penney
Created by Bronte Penney almost 6 years ago
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Question 1

Question
What is an ecosystem?
Answer
  • All the organisms living in a particular area and all the non-living conditions
  • Organisms living in a community, including all the non-living conditions

Question 2

Question
There are 4 different types of bacteria involved in the nitrogen cycle. Which type of bacteria breaks down proteins and urea and turns them into ammonia?
Answer
  • Nitrifying Bacteria
  • Decomposers
  • Denitrifying Bacteria
  • Nitrogen-fixing Bacteria

Question 3

Question
What does each bar of a pyramid of biomass stand for?
Answer
  • the number of organisms
  • the mass of living material

Question 4

Question
Why is carbon monoxide poisonous?
Answer
  • It kills red blood cells in the body
  • It replaces oxygen and combines with red blood cells

Question 5

Question
What is the name of the bacteria that turns nitrates back into Nitrogen gas?
Answer
  • Nitrogen-fixing Bacteria
  • Nitrifying Bacteria
  • Denitrifying Bacteria

Question 6

Question
What percentage of the atmosphere is Nitrogen gas?
Answer
  • 78%
  • 21%

Question 7

Question
Why do plants need nitrogen?
Answer
  • For growth
  • To speed up the rate of photosynthesis

Question 8

Question
Here is a food chain: dandelion ----> rabbit ----> fox ----> flea. Which is the tertiary consumer
Answer
  • fox
  • rabbit
  • flea

Question 9

Question
Only 10% of energy is transferred from one trophic level to another. Why is this?
Answer
  • energy is lost through heat, respiration etc
  • Organisms can only take in a maximum of 10%
  • Organisms only need 10% of the energy

Question 10

Question
All the species in a food web are interdependent. This means if one species changes it doesn't affect the others.
Answer
  • True
  • False