Man and his Environment

In an ecosystem, the following organisms occupy different trophic levels. Which one receives the least share of the sun’s energy?

 
 
 
 

The organisms which depend directly on plants:

 
 
 
 

Ecosystem constitutes:

 
 
 
 

A relationship between species in which one species benefits and the other is harmed is called:

 
 
 
 

A relationship between individuals of one species where one may kill and eat individuals of another species is called:

 
 
 
 

The function of fungi in an ecosystem is to

 
 
 
 

he cause of acid rain is:

 
 
 
 

A relationship between species in which both species benefit is called:

 
 
 
 

By identifying the plants in the given diagram, find the most relevant statement about such plants:

 
 
 
 

The diagram shows a simple energy pyramid. According to this pyramid, the carnivores are at:

 
 
 
 

Habitat destruction can result in a loss of:

 
 
 
 

All the members of a species inhabiting a given location make up a:

 
 
 
 

In a food chain, the greatest amount of energy is present in:

 
 
 
 

Sunlight, temperature, air, and water are examples of:

 
 
 
 

A network of all the feeding relationships in an ecosystem is called:

 
 
 
 

Question 1 of 15

Related Questions:

  1. Physics 10 MCQ
  2. Simple harmonic motion and waves
  3. Simple harmonic motion and waves-NFE
  4. Give an example of vibratory motion which is not simple harmonic motion. Give a reason for your selection.
  5. At the extreme position, velocity is zero but acceleration is maximum in simple harmonic motion. How can you theoretically explain it?
  6. What will happen to the acceleration of a mass-spring system if its mass is doubled?
  7. A simple pendulum has a time period “T”. What will happen to its time period if its thread length is shortened to half?
  8. A simple pendulum has a time period of 4 seconds. Will its time period remain the same or change if its steel bob is replaced by a wooden bob of the same size?
  9. Same masses are attached to different springs, one is vibrating faster. Why?
  10. A simple pendulum has a time period “T” in Murree. In Karachi, it has a different time period. What would you do to make its time period the same as it was in Murree?
  11. What will happen to the frequency of waves in a ripple tank if the time period of the electrical vibrator is decreased? What will happen to the wave speed?
  12. Why do water waves refract at the boundary of shallow water and deep water in a ripple tank experiment?
  13. Under what conditions are waves diffracted the most?
  14. What do you mean by oscillation? Define simple harmonic motion. What are the conditions for a body to perform SHM? Give examples of bodies that perform SHM.
  15. Show that a vibrating mass-spring system performs simple harmonic motion. What is its time period? On what factors does it depend?
  16. Explain the following terms for SHM: Vibration, amplitude, time period, frequency.
  17. Explain that a steel ball dropped from the edge of a shining bowl performs SHM.
  18. What is a simple pendulum? Show that a vibrating simple pendulum performs SHM. What is the formula for the time period of a simple pendulum? On what factors does it depend?
  19. Explain the process of damping. Differentiate between damped and undamped oscillations.
  20. Define the term wave. Explain it with the help of an example. Differentiate between mechanical waves and electromagnetic waves.