Organisms and Populations Test

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Organisms and Populations Test - 69

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Weekly Quiz Competition

Question 1
1 / -0

Match the column I and II.

Column-I
Column-II
(a) Parasitism (i) $$+ +$$
(b) Commensalism (ii) $$+ -$$
(c) Amensalism (iii) $$0 +$$
(d) Mutualism (iv) $$0 -$$

A
(a)-iii, (b)-ii, (c)-iv, (d)-i

B
(a)-i, (b)-ii, (c)-iii, (d)-iv

C
(a)-ii, (b)-iii, (c)-i, (d)-iv

D
(a)-ii, (b)-iii, (c)-iv, (d)-i
Solution
- In interspecific interaction + sign indicates beneficial interaction and - sign indicates detrimental(loss) interaction and 0 indicates neutral interaction.
- (a) Parasitism-(ii)$$+−$$ .
In Parasitism only one species benefits(parasite, predator) and the interaction is detrimental to the other species ( host, prey). Hence it is represented by $$+-$$.
- (b) Commensalism- (iii)$$0+$$
In Commensalism one species is benefited and the other is unaffected. Hence it is represented by $$0+$$.
- (c) Amensalism-(iv)$$0−$$.
In Amensalism one species is harmed whereas the other is unaffected. Hence it is represented by $$0-$$.
- (d) Mutualism-(i)$$++$$
In Mutualism both the species are benefitted. Hence it is represented by $$++$$.
- So, the correct answer is '(a)-ii, (b)-iii, (c)-iv, (d)-i'.
Question 2
1 / -0

In an area a single banyan tree overshadow $$200$$ parthenium grass. Which of the following is a more meaningful measure of population density?

A
Detritus percent

B
Standing crop percent

C
Total number per unit area

D
Standing state percent

Question 3

1 / -0

Match the correct column.

(I)	(II)	(III)
(a) Parasitism	(i) $$-, 0$$	(A) Both get benefitted
(b) Amensalism	(ii) $$-, -$$	(B) One get harmed other has no effect
(c) Competition	(iii) $$+, -$$	(C) Both get harmed
(d) Mutualism	(iv) $$+, +$$	(D) One is harmed and second is benefited

a-iii-D, b-i-B, c-ii-C, d-iv-A

a-ii-C, b-i-B, c-iii-D, d-iv-A

a-iii-D, b-i-A, c-ii-C, d-iv-B

a-iii-A, b-i-B, c-ii-D, d-iv-A

Solution

Parasitism is a relationship between species, where one organism (the parasite) lives on or in another organism (the host) causing it some harm. Hence, in parasitism, one is harmed and second is benefited.
Amensalism is a type of biological interaction. It is an association between two organisms of different species, where one is adversely affected and the other stays unaffected. Hence, in amensalism, one gets harmed and other has no effect.
Competition is an interaction between organisms or species in which both the organisms or species are harmed.
Mutualism describes the ecological interaction between two or more species where each species benefits.

So, the correct answer is 'A'.

Question 4
1 / -0

Match the column
Sr.No a b c
(i) + + (1) Commensalism
(ii) + - (2) Competition
(iii) - - (3) Parasitism
(iv) + 0 (4) mutualism

A
$$(i) 1, (ii) 2, (iii) 3, (iv) 4$$

B
$$(i) 2, (ii) 3, (iii) 1, (iv) 4$$

C
$$(i) 4, (ii) 3, (iii) 2, (iv) 1$$

D
$$(i) 3, (ii) 2, (iii) 1, (iv) 4$$

Solution

1 - when two positive points are combined the interrelationship is called mutualism - example- Between algae and fungi as Lichen
2 - When one positive and negative is combined the interrealtionship between organisms is called as parasitism.- Example - Cuscuta and host plant
3 - When two negative is combined the interrelationship is called competition - example weeds and crop plants
4- when one positive and one neutral is formed the relationship is called commensalism - Example Epiphytic plants

So, the correct answer is '(i)4,(ii)3,(iii)2,(iv)1'
Question 5
1 / -0

The interaction between "Cuckoo and Crow" is an example for

A
Competition

B
Predation

C
Brood parasitism

D
Mutualism

Solution

Brood parasites are organisms that rely on others to raise their young.
So, the correct answer is 'Brood parasitism'
Question 6
1 / -0

Match the column I and II
Column-I Column-I
Parasitism + +
Commensalism +
Amensalism 0 +
Mutualism 0

A
(a) - iii, (b) - ii, (c) - iv, (d) - i

B
(a) - i, (b) - ii, (c) - iii, (d) - iv

C
(a) - ii, (b) - iii, (c) - i, (d) - iv

D
(a) - ii, (b) - iii, (c) - iv, (d) - i
Question 7
1 / -0

Scientists are able to determine the air temperature in the thermosphere by:

A
Using radiosondes

B
Using temperature probes in orbiting satellites

C
Observing changes in satellite orbits

D
Direct measurements in manned, high-altitude balloons
Question 8
1 / -0

Which of the following has the least similarity when comparing two examples of the same biome located in different parts of the world?

A
Climate

B
Latitude

C
Continent

D
Elevation
Question 9
1 / -0

MoEF means

A
Ministry of Forest and Energy

B
Ministry of Environment and Forests

C
Ministry of Fuel and Energy

D
Management of Environment and Forestry
Question 10
1 / -0

Select the correct match
(I) (II) (III)
(a) + (i) - (P) Amensalism
(b) - (ii) - (Q) Commensalism
(c) - (iii) 0 (R) Predation
(d) + (iv) 0 (S) Competition

A
a - iv Q, b - iii P, c - ii S, d - i R

B
a - i Q, b - ii P, c - iii S, d - iv - R

C
a - i Q, b - iii P, c - ii S, d - iv R

D
a - iv Q, b - ii P, c - iii S, d - i - R
Solution
- In interspecific interaction + sign indicates beneficial interaction and - sign indicates detrimental(loss) interaction and 0 indicates neutral interaction.
- (a) + (iv) - (Q) Commensalism - In Commensalism one species is benefited and the other is unaffected. Hence it is represented by $$+0$$.
- (b) - (iii) 0 - (P) Amensalism -In Amensalism one species is harmed whereas the other is unaffected. Hence it is represented by $$0−$$.
- (c) - (ii) - (S) Competition - In Competition both the species are harmed species is benefited and the other is unaffected $$- -$$.
- (d)+ (i) - (R)Predation -In Predation one species is benefited and the other is harmed. Hence it is represented by $$+ -$$.
- So, the correct answer is 'a - iv Q, b - iii P, c - ii S, d - i R'.

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Re-Attempt Weekly Quiz Competition

	Column-I		Column-II
(a)	Parasitism	(i)	$$+ +$$
(b)	Commensalism	(ii)	$$+ -$$
(c)	Amensalism	(iii)	$$0 +$$
(d)	Mutualism	(iv)	$$0 -$$

Sr.No	a	b	c
(i)	+	+	(1) Commensalism
(ii)	+	-	(2) Competition
(iii)	-	-	(3) Parasitism
(iv)	+	0	(4) mutualism

(I)	(II)	(III)
(a) +	(i) -	(P) Amensalism
(b) -	(ii) -	(Q) Commensalism
(c) -	(iii) 0	(R) Predation
(d) +	(iv) 0	(S) Competition

Organisms and Populations Test - 69

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Organisms and Populations Test - 69

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Question 1

(a)-iii, (b)-ii, (c)-iv, (d)-i

(a)-i, (b)-ii, (c)-iii, (d)-iv

(a)-ii, (b)-iii, (c)-i, (d)-iv

(a)-ii, (b)-iii, (c)-iv, (d)-i

Solution

Question 2

Detritus percent

Standing crop percent

Total number per unit area

Standing state percent

Question 3

a-iii-D, b-i-B, c-ii-C, d-iv-A

a-ii-C, b-i-B, c-iii-D, d-iv-A

a-iii-D, b-i-A, c-ii-C, d-iv-B

a-iii-A, b-i-B, c-ii-D, d-iv-A

Solution

Question 4

$$(i) 1, (ii) 2, (iii) 3, (iv) 4$$

$$(i) 2, (ii) 3, (iii) 1, (iv) 4$$

$$(i) 4, (ii) 3, (iii) 2, (iv) 1$$

$$(i) 3, (ii) 2, (iii) 1, (iv) 4$$

Solution

Question 5

Competition

Predation

Brood parasitism

Mutualism

Solution

Question 6

(a) - iii, (b) - ii, (c) - iv, (d) - i

(a) - i, (b) - ii, (c) - iii, (d) - iv

(a) - ii, (b) - iii, (c) - i, (d) - iv

(a) - ii, (b) - iii, (c) - iv, (d) - i

Question 7

Using radiosondes

Using temperature probes in orbiting satellites

Observing changes in satellite orbits

Direct measurements in manned, high-altitude balloons

Question 8

Climate

Latitude

Continent

Elevation

Question 9

Ministry of Forest and Energy

Ministry of Environment and Forests

Ministry of Fuel and Energy

Management of Environment and Forestry

Question 10

a - iv Q, b - iii P, c - ii S, d - i R

a - i Q, b - ii P, c - iii S, d - iv - R

a - i Q, b - iii P, c - ii S, d - iv R

a - iv Q, b - ii P, c - iii S, d - i - R

Solution

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