Mutualism

Q. The interaction between two organisms where both organisms benefit from each other is called .

1. parasitism
2. competition
3. mutualism
4. predation

Q.

Lichens show the symbiotic association between

1. Two Fungi

2. Two Algae

3. Fungus And Algae

4. Fungus And Roots Of Higher Plants

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. Among the following, between which of the two, the relationship is not an example of commensalism?

1. Orchid and the tree on which it grows
2. Cattle egret and grazing cattle
3. Sea anemone and clown fish
4. Female wasp and fig species

Q. Mycorrhizae are the example of:

1. Fungistasis
2. Amensalism
3. Antibiosis
4. Mutualism

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

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. C and D are correct

4. A and D are correct

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. Mutually interacting organisms always function independently.

1. True
2. False

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.

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.

Different types of interactions and the nature of interactions between species A and B are given in column I and II respectively. Choose the correct answer from the answer key where they are matched.

$\begin{array}{cc}ColumnI& ColumnII\\ A.Mutualism& p.BeneficialtoAnoeffectforB\\ B.Competition& q.BeneficialtobothAandB\\ C.Parasitism& r.beneficialtoAandharmfulforB\\ D.Predation& s.BeneficialtoAandharmfultoB\\ E.Commensalism& t.HarmfultobothAandB\end{array}$

1. A- t, B-s, C-p, D-q, E-r

2. A- p, B- r, C- q, D- t, E- s

3. A-q, B- t, C-s, D-r, E-p

4. A- r, B-p, C-q, D-s, E-t

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

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

Q.

What do you understand by the term lichens?