Home
Class 12
BIOLOGY
Draw a 'pyramid of numbers' of a situati...

Draw a 'pyramid of numbers' of a situation where a large population of insects feed upon a very big tree. The insects in turn, are eaten by small birds which in turn are fed upon by big birds.
(b) Differentiate giving reason, between the pyramid of biomass of the above situation and the pyramid of numbers that you have drawn.

Text Solution

AI Generated Solution

### Step-by-Step Solution #### Part A: Drawing the Pyramid of Numbers 1. **Identify the Organisms**: In this ecosystem, we have three main groups of organisms: - **Producers**: A very big tree. - **Primary Consumers**: A large population of insects that feed on the tree. - **Secondary Consumers**: Small birds that eat the insects. ...
Promotional Banner

Similar Questions

Explore conceptually related problems

In a botanical garden of a city there is a huge banyan tree growing on which hundreds of birds and thousands of insects live. Draw the pyramids of numbers and also biomass represented by this community. Comment giving reasons on the two different pyramids drawn.

Figure 6.36 shows a potentiometer with a cell of emf 2.0 V and internal resistance 0.4 Omega maintaining a potential drop across the resistor wire AB . A standard cell that maintains a constant emf of 1.02 V (for very moderate current up to emf mu A ) gives a balance point at 67.3 cm length of the wire. To ensure very low current is drawn the standard cell, a very high resistance of 600 k Omega is put in series with it, which is shorted close to the balance point. The standard cell is then replaced by a cell of unknown emf epsilon and the balance point found, similary, turns out to be at 82.3 cm length of the wire. a. What is the value of epsilon ? b.What purpose does the high resistance of 600 k Omega have? c. Is the balance point affected by this high resistance? d. Is the balance point affected by internal resistance of the driver cell? e. Would the method work in the above situation if the driver cell of the potentiometer had an emf of 1.0 V instead of 2.0 V ? f. Would the circuit work well for determining an extermely small emf, say of the order of a few mV (such as the typical emf of a thermocouple)? If not, how will you modify the circuit ?

select the pyramid of energy which correctly depicts A tree supporting on number of herbivorous birds which are eaten by 1 or 2 hawks of the area (A-tree, B-herbivorous birds, C-Hawks )

'All the pyramids, of number, of energy and biomass are upright''. (i) Grass land (ii) A big tree (iii) A sugarcane field (iv) The Arabian Sea Find the option which correctly tells the ecosystem (s) for which the above statement doesn't hold true.