When spontaneous process occurs then free energy of system
Decrease
Increase
Remains same
Either can increase or decrease
Consider the following statements about food chain
$I.$ The transfer of energy from producers to top consumers through a series of organisms is called food chain
$II.$ A food chain is always straight and proceeds in a progressive straight line
$III.$ In a food chain, there is unidirectional flow of energy from sun to producers and subsequently to series of different types of consumers
Which of the statements given above are correct?
Match the following:
Trophic levels | Examples |
$(A)$ First | $(a)$ Mon |
$(B)$ Second | $(b)$ Wolf |
$(C)$ Third | $(c)$ Cow |
$(D)$ Fourth | $(d)$ Phytoplankton |
If all the plants of the world die all the animals will also die due to shortage of
Which of the following are the essential sources for releasing in the atmosphere?
$I.$ Burning of wood
$II.$ Volcanic activity
$III.$ Combustion of organic matter
$IV.$ Fossil fuels
Choose the correct option
$A$ : In secondary productivity, no new organic matter is formed.
$R$ : It is only utilisation of part of food manufactured by primary producers in building of consumer biomass.