Ecosystem Test

Result

Ecosystem Test - 9

Score
-
out of -
Rank
-
out of -

TIME Taken - -

SHARING IS CARING

If our Website helped you a little, then kindly spread our voice using Social Networks. Spread our word to your readers, friends, teachers, students & all those close ones who deserve to know what you know now.

Weekly Quiz Competition

Question 1
1 / -0

Xerosere that begins on sand is called:

A
hydrosere

B
sandosere

C
psammosere

D
lithosere

Solution

A psammosere is a seral community, an ecological succession that began life on newly exposed coastal sand. Most common psammoseres are sand dune systems.
Question 2
1 / -0

Which of the following represents an incorrect feature of ecological succession:

A
it results into gradual decrease in the biomass

B
It increase attraction

C
progresses towards a state of stability

D
leads from less to very high biodiversity

Solution

Ecological succession gradually results into gradual increase in the biomass as new species having complex plant body replace the older species. Thus, the biomass increase at each stage of succession.
Question 3
1 / -0

The individual transitional communities to inhabit an area are commonly called as:

A
Sere

B
Seral stages

C
Climax stages

D
Pioneer communities

Solution

A seral community (or sere) is an intermediate stage found in ecological succession in an ecosystem advancing towards its climax community. In many cases more than one seral stage evolves until climax conditions are attained. seral communities leads to climax communities.
Question 4
1 / -0

Primary consumer category in aquatic &/or terrestrial ecosystem will include :

A
Water insects, rabbits, frogs and snails

B
Zooplanktons, frog tadpole, snails and tortoise

C
Zooplanktons, frog, grasshoppers and hydra

D
Frog tadpole, goat, bacteria and fungi

Solution

Primary consumers obtain food from producers or autotrophs. In aquatic ecosystem phytoplankton are main prouder and zooplankton are primary consumers along with frog tadpole , snail and tortoise.
Question 5
1 / -0

Examples of local and global nutrient cycles will be:

A
Phosphorus and calcium cycles respectively

B
Carbon and phosphorus cycles respectively

C
Phosphorus and carbon cycles respectively

D
Carbon and nitrogen cycles respectively

Solution

Phosphorus cycle occurs at local level in an ecosystem as it is mainly derived from soil. Carbon cycles occurs through environment and affected by different ecosystem present on earth surface. So, carbon cycle is global in nature.
Question 6
1 / -0

Successive transitional communities will show

A
decrease in the biomass

B
increase in number of species

C
100% energy transfer

D
increase in instability

Solution

During ecological succession, transitional communities or seral communities will show increase in the number of species due to addition of nutrient medium at successive stages of succession.
Question 7
1 / -0

The ecological niche of an organism will not represent

A
its functional role in the ecological system

B
range of conditions that it can tolerate

C
its specialization

D
resources it cannot utilize

Solution

Ecological niche is the area surrounding an organisms that help them in survive, grow and reproduce.

The ecological niche of an organism represents the position and the role played by the organism in the ecosystem in which it lives.

The ecological niche of an organism will not represent resources it cannot utilize.
Question 8
1 / -0

In which of the following places, succession will occur in short time

A
area exposed by a retreating glacier

B
in a small oligotrophic lake

C
on a bare rock

D
in heavily overgrazed pasture

Solution

Succession will occur in short time in heavily overgrazed pasture. If organic compound are already available in the place new organisms will develops faster as compare to bare land without organic matter.
Question 9
1 / -0

Phosphorus will not make part of

A
amino acids

B
ATP

C
nucleic acids

D
teeth

Solution

Phosphorus is not present in amino acids. Nucleic acids, ATP and Teeth contain phosphorus. Amino acids polymerases to form protein.
Question 10
1 / -0

An ecological succession on bare land proceeds towards

A
Increasing wetness

B
Increasing dryness

C
Decreasing wetness

D
Increasing fossils

Solution

An ecological succession on bare land proceeds towards increasing wetness. Availability of water help in faster growth of organism including plants.

User

Question Analysis

Correct -
Wrong -
Skipped -

My Perfomance

Score
-
out of -
Rank
-
out of -

Re-Attempt Weekly Quiz Competition

Ecosystem Test - 9

Result

Ecosystem Test - 9

Score

-

Rank

-

SHARING IS CARING

Question 1

hydrosere

sandosere

psammosere

lithosere

Solution

Question 2

it results into gradual decrease in the biomass

It increase attraction

progresses towards a state of stability

leads from less to very high biodiversity

Solution

Question 3

Sere

Seral stages

Climax stages

Pioneer communities

Solution

Question 4

Water insects, rabbits, frogs and snails

Zooplanktons, frog tadpole, snails and tortoise

Zooplanktons, frog, grasshoppers and hydra

Frog tadpole, goat, bacteria and fungi

Solution

Question 5

Phosphorus and calcium cycles respectively

Carbon and phosphorus cycles respectively

Phosphorus and carbon cycles respectively

Carbon and nitrogen cycles respectively

Solution

Question 6

decrease in the biomass

increase in number of species

100% energy transfer

increase in instability

Solution

Question 7

its functional role in the ecological system

range of conditions that it can tolerate

its specialization

resources it cannot utilize

Solution

Question 8

area exposed by a retreating glacier

in a small oligotrophic lake

on a bare rock

in heavily overgrazed pasture

Solution

Question 9

amino acids

ATP

nucleic acids

teeth

Solution

Question 10

Increasing wetness

Increasing dryness

Decreasing wetness

Increasing fossils

Solution

User

Question Analysis

My Perfomance

Score

-

Rank

-

Results Announcement on: coming Monday

Stay Tuned: We’ll update you on your result via email or SMS.