What Is Pyramid of Number

Q. Statement 1: In a food chain number of organisms at each successive level decreases.
Statement 2: Number of organisms at any trophic level depends upon the availability of food and energy.

1. Both the statements are true and statement 2 is the correct explanation for statement 1.
2. Statement 1 is not true but statement 2 is true.
3. Statement 1 is true but statement 2 is false
4. Both the statements are false

Q. The pyramid of numbers for a terrestrial ecosystem is upright because the energy for supporting the organisms

1. remains same.
2. increases.
3. decreases.
4. decreases and then increases.

Q. Given below is an imaginary pyramid of numbers of a self sutainable ecosystem. Which of the following options is true about the pyramid?

1. Level one PP has "pipal trees" and the level SC has "sheep"
2. Level PC has "rats" and level SC has "cats"
3. Level PC has "insects" and level SC has "small insectivorous birds"
4. Level PP has " Phytoplanktons" in sea and "Whale" on top-level TC

Q. The pyramid of numbers shows decrease in both numbers and ___

Q. The pyramid of numbers for a single tree is .

1. upright
2. inverted
3. spindle-shaped
4. square-shaped