Question
Which of the following can fix free nitrogen?
(a) Virus (b) Fungi (c) Blue green algae (d) Protozoa.
Solution
(c) Blue green algae.
Which of the following can fix free nitrogen?
(a) Virus (b) Fungi (c) Blue green algae (d) Protozoa.
(c) Blue green algae.
What is biosphere?
What are the physical components?
What is biotic component?
Does there exist any relationship between the climate and biotic components? If yes, explain with example.
What percentage of oxygen and nitrogen is present in the air?
Name the pollutants by which industries pollute air.
How is balance of carbon dioxide and oxygen maintained in the environment?
What is the percentage of carbon dioxide in the atmosphere of Venus and Mars?
What are the two main ways in which oxygen is consumed and carbon dioxide is produced?
What are the two ways in which carbon dioxide is fixed to keep its percentage almost constant?
Mock Test Series
