Question
What is an energy pyramid?

Answer

An energy pyramid is a graphical representation of the flow of energy from the producers through the various consumers. It shows the amount of energy available and the loss of useful energy at each step of the food chain in an ecosystem.

Need a full question paper?

Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.

Start Generating Free
What is the importance of keeping the hair, teeth and finger nails clean? How would you keep them clean?
Moist germinated seeds were placed in a thermos flask $A,$ and germinating seeds, which were boiled and then soaked in$5$ percent formalin, were placed in thermos flask $B$. Thermometers were inserted in the flask and the mouth of each flask plugged with moist cotton wool. The two flasks were fixed upside down as shown in the fig. $10.9.$ The temperature on both thermometers was noted. After about $48$ hours, the temperature in
Image
flask A was found to be much higher than that in flask $B$.
$(a)$ State the object of using the apparatus..
$(b)$ Explain, why a rise in temperature occurs in flask $A$
$(c)$ If 5 percent formalin was not used after boiling the seeds, the temperature of flask $B$ would have risen considerably. Explain.
What are lenticels? Where do they occur? Mention their role.
Write a brief account on the following disease: Tuberculosis
What do you understand by the term 'environment'?
Mention the function
Red Cross
State the major function of the following :
Lysosomes
What is the difference between organ and organelle?
Explain the following terms
Dentine