Nitrogen is fixed in ecosystems in ways stated below. Which one of the statements below is false?

A) By cyanobacteria

B) By electrical discharges in the atmosphere

C) By industrially synthesised fertilizer

D) By denitrification

Correct Answer:
D) By denitrification

Part of solved Biology questions and answers : >> General Science >> Biology


No comments available

Similar Questions
1). Pollen grains in plants are produced in
A). roots
B). leaves
C). flower
D). stem
-- View Answer
2). Pollination by wind is called
A). anemophily
B). hydrophily
C). zoophily
D). entomophily
-- View Answer
3). Mutation is
A). a factor responsible for plant growth
B). a change which affects the offspring of F2 generation only
C). a change that is inherited
D). a change which affects the parents
-- View Answer
4). Oxyreductases, transferases, hydrolases, lyases, isomerases and ligases are all classes of
A). hormones
B). enzymes
C). proteins
D). vitamins
-- View Answer
5). Radish is a
A). bulb
B). conn
C). modified root
D). tuber
-- View Answer

6). Outer covering of virus made up of protein is
A). capsid
B). coat
C). virion
D). viriod
-- View Answer
7). Movements due to light are shown by
A). flowering plants
B). lower plants
C). all land plants
D). all the plants
-- View Answer
8). Our major foods, fibres, spices, fruits and beverage crops are
A). flowering plants
B). gymnosperms plants
C). pteridophytes
D). bryophytes
-- View Answer
9). Organic Substances which, in very small amounts, control growth and development called
A). vitamins
B). hormones
C). enzymes
D). None of the above
-- View Answer
10). Radioactivity is a phenomenon of the spontaneous emission of
A). protons (alpha particles)
B). electrons (beta particles)
C). gamma rays (short wave electromagnetic waves)
D). All of the above
-- View Answer