Soil particles determine its

Important Questions on Ecosystem

EASY

Biology>Ecology>Ecosystem>Ecosystem- Structure and Function

Biological equilibrium is found among the:

EASY

Biology>Ecology>Ecosystem>Ecosystem- Structure and Function

Which among the following is not a functional unit of the ecosystem?

EASY

Biology>Ecology>Ecosystem>Ecosystem- Structure and Function

The amount of nutrients, such as carbon, nitrogen, phosphorus and calcium present in the soil at any given time, is referred as:

EASY

Biology>Ecology>Ecosystem>Ecosystem- Structure and Function

The term ecosystem was coined by:

MEDIUM

Biology>Ecology>Ecosystem>Ecosystem- Structure and Function

Vertical distribution of different species occupying different levels in a biotic community is known as:

HARD

Biology>Ecology>Ecosystem>Ecosystem- Structure and Function

Which of the following is incorrect pair regarding cyclomorphosis in Daphnia$?$

MEDIUM

Biology>Ecology>Ecosystem>Ecosystem- Structure and Function

All species of vultures in India are threatened with extinction. What is the most likely outcome if all vultures in India go extinct?

EASY

Biology>Ecology>Ecosystem>Ecosystem- Structure and Function

In which of the following interaction both partners are adversely affected?

EASY

Biology>Ecology>Ecosystem>Ecosystem- Structure and Function

Presence of plants arranged into well-defined vertical layers depending on their height can be seen best in:

EASY

Biology>Ecology>Ecosystem>Ecosystem- Structure and Function

Which of the following ecosystem has the maximum amount of biomass production?

MEDIUM

Biology>Ecology>Ecosystem>Ecosystem- Structure and Function

Study the following statements and select the correct ones:
I) In a thermally stratified lake, in winter, the upper layer is known as epilimnion.
II) Animals in a lake that are capable of swimming constitute neuston.
III) The natural interconnections of food chain forms a network called food web.
IV) Energy flow in an ecosystem is unidirectional.

EASY

Biology>Ecology>Ecosystem>Ecosystem- Structure and Function

An association of individuals of different species living in the same habitat and having functional interactions is:

MEDIUM

Biology>Ecology>Ecosystem>Ecosystem- Structure and Function

Choose the correct statements.
A) In the total cost of ecosystem services, soil formation accounts for $50\%$
B) During succession, some species colonize an area, and their population increases, but other species will disappear
C) In many desert plants, the CAM pathway enables the stomata to close during day time
D) In hydrophytes, long, slender and flexible stems are not found

MEDIUM

Biology>Ecology>Ecosystem>Ecosystem- Structure and Function

Identify the correct statements with reference to greater biodiversity in the tropics.
A. The duration of time available for species diversification is limited.
B. Solar energy and water resources are available in abundance.
C. Tropical climates are not constant and cannot be predictable.
D. Tropical latitudes have remained relatively undisturbed for millions of years.

MEDIUM

Biology>Ecology>Ecosystem>Ecosystem- Structure and Function

When does the growth rate of a population following the logistic model equal zero? The logistic model is given as $dN/dt=rN\left(1-N/K\right):$

EASY

Biology>Ecology>Ecosystem>Ecosystem- Structure and Function

Which of the following is correct for r-selected species?

MEDIUM

Biology>Ecology>Ecosystem>Ecosystem- Structure and Function

The following graph depicts changes in two populations (A and B) of herbivores in a grassy field. A possible reason for these changes is that.

EASY

Biology>Ecology>Ecosystem>Ecosystem- Structure and Function

Who proposed that ecosystem is the symbol of structure and function of nature?

MEDIUM

Biology>Ecology>Ecosystem>Ecosystem- Structure and Function

Which one of the following is a characteristic feature of cropland ecosystem?

EASY

Biology>Ecology>Ecosystem>Ecosystem- Structure and Function

Most animals that live in deep oceanic waters are: