Organisms and Populations Test

Result

Organisms and Populations Test - 32

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

If there were no atmosphere around the earth, the temperature of the earth will

A
Increase

B
Go on decreasing

C
Increase during day and decrease during night

D
Be uneffected.
Solution
Solution

Correct answer is option C.

Explanation for correct option:
- An atmosphere is a layer of gas or layers of gases that envelope a planet, and is held in place by the gravity of the planetary body.
- It protects living organisms from temperature extremes and excessive UV radiation.
- If there were no atmosphere around the earth, the temperature would get affected.
- Also there would be no ozone layer that would be used as a protection layer against harmful radiations.
- The earth would become Like a moon that had temperatures ranging from −190∘C to 110∘C.
Question 2
1 / -0

Which of the following is a parasitic plant?

A
Amarbel

B
Sunflower

C
Rose

D
Lily
Question 3
1 / -0

Forest is an

A
Exhaustible resource

B
Renewable resource

C
Inexhaustible resource

D
Both A and B

Solution

Resources which get exhausted and are not available in nature in plenty and are known as exhaustible natural resources. They take longer to get replenished. For example, coal, petroleum, forest, minerals, etc. A renewable resource is an organic natural resource which can replenish to overcome usage and consumption, either through biological reproduction or other naturally recurring processes. Forests are renewable natural resource capable of providing several major and minor forest products and contribute substantially to economic development. The forests consist of a variety of flora and fauna, which form a rich bio-diversity and play a vital role in the environmental stability and ecological balance.
Question 4
1 / -0

How do parasitic plants obtain their food?

A
Parasitic plants live on the body of other plants

B
Parasitic plants majorly perform photosynthesis.

C
Parasitic plants take nutrients from host plant.

D
Both A and C
Question 5
1 / -0

Which one of the following is not observed in biodiversity hotspots?

A
Lesser inter-specific competition

B
Species richness

C
Endemism

D
Accelerated species loss

Solution

A biodiversity hotspot is a biogeographical region with a significant reservoir of biordiversity that is threatened of destruction. The concept is given by Dr. Normal Myers. Endemism is the ecological state of a species being unique to a defined geographic location common in biodiversity hotspots, there will also be species richness and accelerated species loss because of destruction common in biodiversity hotspots. There will be high inter specific competition observed in these regions.
Therefore, the correct answer is option A.
Question 6
1 / -0

Directions For Questions

An ecologist passed through different biomes while driving up a high mountain. At the lowest elevation (sea level), the ecologist saw deep-green vegetation, many birds, and small mammals. At the highest elevation, the ecologist saw bare rock, very little vegetation, and few birds.

...view full instructions

Which sequence of biomes did the ecologist most likely pass through while driving from the lowest elevation to the highest elevation of this mountain ?

A
Grassland $$\rightarrow$$ tundra $$\rightarrow$$ taiga

B
Taiga $$\rightarrow$$ tundra $$\rightarrow$$ temperate deciduous forest

C
Tundra $$\rightarrow$$ temperate deciduous forest $$\rightarrow$$ taiga

D
Temperate deciduous forest $$\rightarrow$$ taiga $$\rightarrow$$ tundra
Question 7
1 / -0

The major forest types found in India is

A
Subtropical deciduous

B
Tropical moist deciduous

C
Tropical deciduous

D
Temperate deciduous

Solution

Tropical deciduous forests are found throughout India except in the western and the north-western regions. The trees have broad trunks, are tall and have branching trunks and roots to hold them firmly to the ground. There is a layer of shorter trees and evergreen shrubs in the undergrowth. These forests are dominated by sal and teak, along with mango, bamboo, and rosewood.
Question 8
1 / -0

In commensalism

A
Both partners are benefitted.

B
Both partners are harmed.

C
Weaker is benefitted while stronger is unharmed.

D
None of the above.

Solution

In commensalism, one organism benefits from the other without affecting it. Commensalism is a relation between individuals of two species in which one species obtains food or other benefits from the other without either harming or benefiting the latter. Thus, the correct answer is option C.
Question 9
1 / -0

Population of an insect species increases explosively during rainy season and then disappears at the end of the season. It shows

A
Food plants mature and die at the end of rainy season

B
Population of predators increases enormously

C
Poplation growth curve is J-shaped

D
Population growth curve is S-shaped

Solution

The growth of a particular species depends on the factors available in the given region for their survival. On the basis of the nature of growth and the specific requirement the growth patterns are classified into J-shape, S-shape etc. J-shaped growth curve records the situation in which the population density of an organism increases rapidly in an exponential in new environment, but then stops abruptly as environmental resistance (e.g., seasonality) or some other factor (e.g., the end of the breeding phase) suddenly becomes effective. This type of population growth is termed density-independent as the regulation of growth rate is not related to the population density until the final crash.
Therefore, the correct answer is option C.
Question 10
1 / -0

Which type of association is found in between entomophilous flower and pollinating agent?

A
Mutualism

B
Commensalism

C
Co-operation

D
Co-evolution

Solution

A.Correct option -A

B.Explanation for correct option -A
●Mutualism is a type of relationship in which each individual benefits from the activity of the other.
●Similar interactions within a species are known as co-operation.
●Entomophilous flower benefits from the agent that pollination occurs with the help of it.
● At the same time the pollinating agent is benefited by the nectar present in the flower.

User

Question Analysis

Correct -
Wrong -
Skipped -

My Perfomance

Score
-
out of -
Rank
-
out of -

Re-Attempt Weekly Quiz Competition

Organisms and Populations Test - 32

Result

Organisms and Populations Test - 32

Score

-

Rank

-

SHARING IS CARING

Question 1

Increase

Go on decreasing

Increase during day and decrease during night

Be uneffected.

Solution

Question 2

Amarbel

Sunflower

Rose

Lily

Question 3

Exhaustible resource

Renewable resource

Inexhaustible resource

Both A and B

Solution

Question 4

Parasitic plants live on the body of other plants

Parasitic plants majorly perform photosynthesis.

Parasitic plants take nutrients from host plant.

Both A and C

Question 5

Lesser inter-specific competition

Species richness

Endemism

Accelerated species loss

Solution

Question 6

Grassland $$\rightarrow$$ tundra $$\rightarrow$$ taiga

Taiga $$\rightarrow$$ tundra $$\rightarrow$$ temperate deciduous forest

Tundra $$\rightarrow$$ temperate deciduous forest $$\rightarrow$$ taiga

Temperate deciduous forest $$\rightarrow$$ taiga $$\rightarrow$$ tundra

Question 7

Subtropical deciduous

Tropical moist deciduous

Tropical deciduous

Temperate deciduous

Solution

Question 8

Both partners are benefitted.

Both partners are harmed.

Weaker is benefitted while stronger is unharmed.

None of the above.

Solution

Question 9

Food plants mature and die at the end of rainy season

Population of predators increases enormously

Poplation growth curve is J-shaped

Population growth curve is S-shaped

Solution

Question 10

Mutualism

Commensalism

Co-operation

Co-evolution

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.