Ecological Pyramids

Q.

In a pond ecosystem, the pyramid of biomass is:

1. Spindle shaped

2. Inverted

3. Upright

4. None of the above

Q.

A: Ecological pyramids are also called Eltonian pyramids.
R: An ecological pyramid is always upright.

1. Both the assertion and the reason are true and the reason is the correct explanation for the assertion
2. Both the assertion and the reason are true but the reason is not the correct explanation of the assertion
3. The assertion is true but the reason is false
4. Both the assertion and the reason are false

Q.

Microorganisms decompose dead parts of plant and animal bodies, and clean the environment.

1. True
2. False

Q.

Name the following: Biotic constituents of soil.

Q. Biomass is the product of mass of living organisms and their in an ecosystem.

1. weight
2. energy
3. number

Q. Name the three types of ecological pyramids.

Q. Match the organisms with their respective mode of nutrition.

1. Autotrophic
2. Heterotrophic
3. Saprotrophic

Q.

Which is the abiotic component of the ecosystem?

1. Humus

2. Bacteria

3. Plants

4. Fungi

Q.

Give one word for the graphic representation of the number of individuals at different trophic levels in a food chain.

Q.

Which one of the following statements for the pyramid of energy is incorrect?

1. It is upright in shape
2. Its base is broad
3. It shows energy content of different trophic level of organisms
4. It is inverted in shape

Q. Match the animals to the right category, based on their eating habits.

1. Lion
2. Bear
3. Zebra
4. Vulture

Q.

Which of the following pyramid is always upright and can never be inverted?

1. Pyramid of biomass
2. Pyramid of number
3. Pyramid of energy
4. Both (a) and (c)

Q. Value Based Questions :
Pyramid of energy-is always upright, can never be inverted

Q.

In ecosystem, the insectivorous plants are placed in

1. herbivorous

2. primary producers

3. ​​​​​​predators

4. none correct

Q.

name any 2 parameters based on which ecological pyramids are drawn.

Q. Which of these are limitations of ecological pyramids?

1. Salvadora – Desert
2. Cenchrus – Savanna
3. Abies – Coniferous forest
4. Tectona - Temperate forest

Q. Which of the following is a type of ecological pyramid?

1. Pyramid of body mass

2. Pyramid of number

3. Pyramid of richness

4. Pyramid of diversity

Q. Regarding assertion and reason, select the right option
Assertion: Ecological pyramids are also called Eltonian pyramids.
Reason: An ecological pyramid is always upright.

1. Both the assertion and the reason are false
2. Both the assertion and the reason are true and the reason is the correct explanation for the assertion
3. Both the assertion and the reason are true but the reason is not the correct explanation of the assertion
4. The assertion is true but the reason is false

Q. Which of the following is not a type of ecological pyramid?

1. Pyramid of number
2. Pyramid of biomass
3. Pyramid of energy
4. All of the above

Q.

The final stable community in an ecological succession is

1. Sere

2. ​​​​​​Carnivores

3. ​​​​​​Pioneers

4. Climax

Q.

The concept of ecological pyramid was first proposed by:

1. E.P. Odum

2. A.G. Tansley

3. Juday

4. Charles Elton

Q. Which of the following statement about energy pyramid is true?

1. Ecological pyramids demonstrate a 90% loss in energy at each step up the pyramid.

2. Ecological pyramids are difficult to disrupt.

3. Ecological pyramids show that carnivory is more efficient than herbivory.

4. Ecological pyramids demonstrate a 10% loss in energy at each step up the pyramid.

Q. What do all ecological pyramids depict?

1. Increase in energy at each trophic level
2. Biomass of organisms at each trophic level
3. Number of organisms at each trophic level
4. Energy flow at each trophic level