Which of the following is not a abiotic component of the ecosystem?

(a)

Bacteria

(b)

Humus

(c)

Organic compounds

(d)

Inorganic compounds

Which of the following ecosystem has the highest primary productivity?

(a)

Pond ecosystem

(b)

Lake ecosystem

(c)

Grassland ecosystem

(d)

Forest ecosystem

The following diagram represents

 

(a)

pyramid of number in a grassland ecosystem

(b)

pyramid of number in a pond ecosystem

(c)

pyramid of number in a forest ecosystem

(d)

pyramid of biomass in a pond ecosystem

Which of the following are not regulating services of ecosystem services
i) Genetic resources
ii) Recreation and aesthetic values
iii) Invasion resistance
iv) Climatic regulation

(a)

i and iii 

(b)

 ii and iv

(c)

i and ii

(d)

i and iv

Identify the incorrect option among the following component sequence.

(a)

air, water, sunlight and temperature

(b)

latitude, altitude, direction of mountain and aptitude

(c)

soil air, pH of soil, saltwater and soil moisture

(d)

carbohydrate, protein, lipids and humic substances

Photosynthetically Active Radiation ranges between the wavelength of __________

(a)

400 - 600 nm

(b)

600 - 700 nm

(c)

400 - 500 nm

(d)

400 - 700 nm

Which group of organism occupies the third tropic level in an ecosystem?

(a)

Primary consumers

(b)

Secondary consumers

(c)

Secondary carnivores

(d)

Omnivores

If 1200 Joules of solar energy is trapped by producers, how much of Joules of energy does the organism in the third trophic level will receive?

(a)

120 Joules

(b)

12 Joules

(c)

1.2 Joules

(d)

0.12 Joules

Pyramid of numbers with broad base indicates ______

(a)

High population of old individuals

(b)

Low population of young individuals

(c)

High population of young individuals

(d)

Low population of old individuals

Spindle shaped pyramid is a character of ______

(a)

Pond ecosystem

(b)

Grassland ecosystem

(c)

Parasite ecosystem

(d)

Forest ecosystem

Complete the food chain by filling the link X:
Paddy ~ Grassopper ~ Frog ~ X ~ Hawk

(a)

King cobra

(b)

Gorilla

(c)

Rabbit

(d)

Tasmanial wolf

Which of the following is abundant in rock deposits and guano?

(a)

Nitrogen

(b)

Phosphorous

(c)

Oxygen

(d)

Calcium

Lotic ecosystem refers to________

(a)

Open water ecosystem

(b)

Running water ecosystem

(c)

Standing water ecosystem

(d)

Ocean water ecosystem

Identify the correct sequence of various zones from surface to depth in a pond ecosystem.

(a)

Profundal, limnetic, littoral and benthic

(b)

Benthic, littoral, profundal and limnetic

(c)

Limnetic, profundal, littoral and benthic

(d)

Littoral, limnetic, profundal and benthic

Assertion (A): Pyramid of energy is upright.
Reason (R): During the energy transfer at successive trophic levels from producers there will be a gradual decrease

(a)

Both A and R are wrong

(b)

A is right R is wrong

(c)

R explains A

(d)

A is right R is not the correct explanation for A

Discuss the gross primary productivity is more efficient than net primary productivity.

Pyramid of energy is always upright. Give reasons

According to A.G. Tansley, what is an ecosystem?

What are biotic components?

Define Grey carbon and Black carbon.

What is energy flow?

What is Eltonian pyramid?

Why do we obtain an inverted pyramid in a parasite ecosystem?

Name the type of ecosystem that exhibits the following types of pyramid.
(a) Inverted pyramid of biomass
(b) Spindle shaped pyramid of number

Define
(a) Hydrosere
(b) Xerosere

Construct the food chain with the following data.
Hawk, plants, frog, snake, grasshopper.

Shape of pyramid in a particular ecosystem is always different in shape. Explain with example.

Generally human activities are against to the ecosystem, where as a student how will you help to protect ecosystem?

State the second law ofthermodynamics.

Explain Grazing food chain with example.

Name the three types of ecological pyramids.

Pyramid of energy is always upright - Justify.

Explain the cycling of phosphorus in an ecosystem.

What is primary succession?

Frame any two food chain patterns from the given organisms. Each chain must contain a minimum of four organisms.
Diatoms, Hawk, Rabbit, Vallisneria
Stoke, guppies, grass, snake, large fishes, grasshopper, crane.

Draw a pyramid from following details and explain in brief.
Quantities of organisms are given-Hawks - 50, plants - 1000.rabbit and mouse - 250 + 250, pythons and lizard - 100 + 50 respectively.

Various stages of succession are given bellow. From that rearrange them accordingly. Find out the type of succession and explain in detail.
Reed-swamp stage, phytoplankton stage, shrub stage, submerged plant stage, forest stage, submerged free floating stage, marsh medow stage.

Explain various steps involved in decomposition (or) Write the steps involved in the mechanism decomposition. 

Write an essay on pond ecosystem.

Write a note on the strategies of ecosystem management.

Differentiate Primary succession and Secondary succession.

Bring out the importance of plant succession.