Organisms and Populations Test

Result

Organisms and Populations Test - 46

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

Edaphic factors are related to

A
Humidity

B
Soil texture

C
Rainfall

D
Wind velocity
Solution
- Various environmental factors can be divided majorly into climatic factors, edaphic factors and biotic factors.
- The factors which relate to structure and composition of soil are called edaphic factors. Soil composition, organic matter, soil water, soil air and soil organisms are examples of edaphic factors.
- Humidity, rainfall, and wind velocity are climatic factors.
- Examples of biotic components include animals, plants, fungi, and bacteria.
So, the correct option is B.
Question 2
1 / -0

Competition between two species

A
Results in dying of one species

B
Forces one of the species to live elsewhere

C
Switch over to another kind of food

D
All of the above

Solution

When the individuals of 2 different species come to live together, they compete with each other for food, shelter and other basic needs of life. As a result, the one with greater evolutionary success over another will dominate and the other species has to starve. Thus, the weaker one might either get extinct and die, have to relocate or change their dietary habits.
So, option D is the correct answer.
Question 3
1 / -0

Association of nitrogen fixing bacteria with the leguminous roots is

A
Mutualism

B
Commensalism

C
Neutralism

D
Parasitism

Solution

Mutualism is a type of symbiotic relationship which is beneficial to both the involving species. In the relationship between nitrogen-fixing bacteria that stay in the root nodules of leguminous plants, bacteria provide for the nitrogen requirement of the plant and plants, in turn, provide for its shelter and nutrition.
So, option A is the correct answer.
Question 4
1 / -0

Mutualism and proto-cooperation are

A
Positive interactions

B
Negative interactions

C
Both A and B

D
None of these

Solution

Mutualism is a beneficial population interaction. It is observed in many types of population interactions. Proto co-operation is also a type of mutually beneficial interaction. None of the species is harmed in this type of interaction.
So the correct option is A.
Question 5
1 / -0

Select incorrect statement :

A
Orchid epiphytic on Mango is commensal

B
Bird laying eggs in the nest of another for incubation shows brood parasitism

C
Most animals and plants maintain a constant internal temperature

D
Small animals are rare in polar regions

E
One species harmed, other unaffected in amensalism
Question 6
1 / -0

Relationship between epiphyte and tree is

A
Parasitism

B
Protocooperation

C
Commensalism

D
Amensalism

Solution

Commensalism is a type of population interaction in which one species is benefited and another is neither harmed nor benefit. In this, epiphyte is benefited as it receives support from the tree and the tree is neither harmed nor benefited.
So, the correct answer 'Commensalism'
Question 7
1 / -0

What is relationship between egret and cattle?

A
Commensalism

B
Protocooperation

C
Mutualism

D
Parasitism

Solution

Protocooperation is a type of interaction between two organisms of different species in which both are benefited but the relation is not obligatory.
For example:
Predatory bird (erget) sit on cattle is an example of protocooperation as the erget (bird) feed on ectoparasites like leech, lice,etc.
Egrets remove parasitic ticks from the cattle and those ticks that feed on upon cattle blood which can transmit various diseases. In return the egrets acquire some of their nutrient from the consumed ticks. Both egrets and cattle hence share benefits.
Hence, answer is "protocooperation".
Question 8
1 / -0

Non-obligatory mutually beneficial relationship is represented by

A
Symbiosis

B
Protocooperation

C
Commensalism

D
Mimicry

Solution

Protocooperation is a non-obligatory beneficial relationship that develops when two different organisms get associated. This relationship process involves adoption on cooperative basis.
Hence answer is "Protocooperation".
Question 9
1 / -0

At the equilibrium stage of sigmoid growth curve, population size

A
Shows minor fluctuations

B
Remains static

C
Shoes slow growth

D
Declines very slowly

Solution

Sigmoid curve is the one inn which there is an increase in growth which is slow and gradual, then there is rapid increase in growth, after which there is a decline in growth. At the stage when the births and deaths are equal, equilibrium stage is attained. At this stage, the population size shows minute fluctuations and is almost constant.
So, option A is the correct answer.
Question 10
1 / -0

Specialised pollinators are

A
Critical link species

B
Keystone species

C
Network species

D
Biospecies

Solution

Critical link species are the ones that play an important role in supporting the main network species. For this purpose, they act as pollinators, absorbers or nutrient circulators. Mycorrhizal fungi are an example of critical link species. They are present in vascular plants. They help them in obtaining inorganic nutrients from the soil.
So, the correct answer is 'Critical link species'

User

Question Analysis

Correct -
Wrong -
Skipped -

My Perfomance

Score
-
out of -
Rank
-
out of -

Re-Attempt Weekly Quiz Competition

Organisms and Populations Test - 46

Result

Organisms and Populations Test - 46

Score

-

Rank

-

SHARING IS CARING

Question 1

Humidity

Soil texture

Rainfall

Wind velocity

Solution

Question 2

Results in dying of one species

Forces one of the species to live elsewhere

Switch over to another kind of food

All of the above

Solution

Question 3

Mutualism

Commensalism

Neutralism

Parasitism

Solution

Question 4

Positive interactions

Negative interactions

Both A and B

None of these

Solution

Question 5

Orchid epiphytic on Mango is commensal

Bird laying eggs in the nest of another for incubation shows brood parasitism

Most animals and plants maintain a constant internal temperature

Small animals are rare in polar regions

One species harmed, other unaffected in amensalism

Question 6

Parasitism

Protocooperation

Commensalism

Amensalism

Solution

Question 7

Commensalism

Protocooperation

Mutualism

Parasitism

Solution

Question 8

Symbiosis

Protocooperation

Commensalism

Mimicry

Solution

Question 9

Shows minor fluctuations

Remains static

Shoes slow growth

Declines very slowly

Solution

Question 10

Critical link species

Keystone species

Network species

Biospecies

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.