Mutualism

Q. Which of the following associations shows mutualism?

1. Fig and wasp
2. Barnacles on whale
3. Roundworms in human intestine
4. Orchids on mango tree

Q.

An association between two individuals or populations where both benefit and neither can survive without the other is:

1. competition

2. commensalism

3. mutualism

4. Amensalism

Q.

Which of the following organisms are in symbiosis in a mycorrhiza?

1. Fungus-Fungus

2. Alga-Alga

3. Fungus-Gymnosperm

4. Alga-Fungus

Q. Regarding assertion and reason , choose the correct option.
Assertion [A]: Lichens represent an intimate mutualistic relationship between fungi and photosynthesising algae.
Reason [R]: Mutualistic organisms mostly occupy the same niche and are studied together as they are functionally interlinked.

1. Both A and R are false
2. Both A and R are true and R explains A
3. A is true and R is false
4. Both A and R are true R does not explain A

Q. Match column I with column II and select the correct option from the codes given below.
$\begin{array}{cc}ColumnI& ColumnII\\ A.Commensalism& \left(i\right)Oneinhibited,otherunaffected\\ B.Parasitism& \left(ii\right)Onebenefitted,otherunaffected\\ C.Mutualism& (iiiBotharebenefitted\\ D.Amensalism& \left(iv\right)Onebenefitted,otherharmed\end{array}$

1. A -(iv), B -(ii), C -(iii), D -(i)
2. A -(iii), B -(iv), C -(ii), D -(i)
3. A -(ii), B -(iv), C -(iii), D -(i)
4. A -(ii), B -(iv), C -(i), D -(iii)

Q.

Read the following given examples

(i) Plant – pollinator mutualism

(ii) African catfish in our rivers for aquaculture

(iii) Fish species with its parasites.

(iv) Nile perch and cichlid fish

Which out of these options correctly gives the examples of “Co – extinctions” as a cause of biodiversity loss.

1. (i), (ii)

2. (ii), (iv)

3. (i), (iii)

4. (ii), (iii)

Q. Given below are interactions depicted between two species with a ‘+’ sign for beneficial interaction and ‘-’ sign for detrimental interaction. Choose the option which depicts mutualism.

1. Species A + Species B -
   
2. Species A + Species B +
3. Species A - Species B -
4. Species A - Species B +

Q.

Choose the wrong option:

1. predation - one benefits and the other suffers

2. commensalism - one benefits and the other is unaffected

3. amensalism - one is harmed, other unaffected

4. mutualism - both species are harmed

Q.

Study the following statements about Adamsia and select your answer from the answer code.

(A) It is a parasite on clownfish.

(B) It is an example of symbiotic mutualism along with clownfish

(C) It is called sea anemone.

(D) It is called hermit crab.

1. A and B are correct

2. B and C are correct

3. A and D are correct

4. C and D are correct

Q. Root nodules are (i) ___ association, between (ii) ___

1. (i) Parasitic (ii) plant and fungi
2. (i) Mutualistic (ii) leguminous plant and rhizobium
3. (i) Commensalistic (ii) leguminous plant and rhizobium
4. (i) Parasitic (ii) leguminous plant and algae