QBManager

Organisms and Populations

231191 Match the correct column
| (I) | (II) | (III) |
| :--- | :--- | :--- |
| (P) Parasitism | (i),- 0 | (A) Both get
benefitted |
| (Q)
Amensalism | (ii),-- | (B) One get harmed
other has no effect |
| (R)
Competition | (iii),+- | (C) Both get harmed |
| (S) Mutualism | (iv),++ | (D) One is harmed
and second is
benefited |

1

P - i i i - D, Q - i - B, R - i i - C, S - i v - A

2

P - i i - C, Q - i - B, R - i i i - D, S - i v - A

3

P - i i i - D, Q - i - A, R - i i - C, S - i v - B

4

P - i i i - A, Q - i - B, R - i i - D, S - i v - A

Explanation:

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 $(-, 0)$ 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 organism 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.

AIIMS-25.05.2019 Shift-II

Organisms and Populations

231192 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 |

1

A - iv - Q, B - iii - P, C - ii - S, D - i - R

2

A - i - Q, B - ii - P, C - iii - S, D - iv - R

3

A - i - Q, B - iii - P, C - ii - S

, D- iv

- R

4

A -

iv

- Q, B - ii - P, C - iii - S, D - i - R

Explanation:

Exp:
| :--- | :--- | :--- |
| (A) + | (iv) $0$ | (Q) Commensalism |
| (B) - | (iii) $0$ | (P) Amensalism |
| (C) - | (ii) - | (S) Competition |
| (D) + | (i) - | (R) Predation |
- Commensalism is a long term biological interaction in which members of one species gain benefits while those of the other species neither benefit nor are harmed. It is denoted by,+ 0.
- 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 it is denoted by,- 0.
- Competition is an interaction between organisms or species in which both the organisms or species are harmed. It is represented by -,-.
- Predation is biological interaction where one organism, the predator, kills and eats another organism, its prey. It is denoted by,+-.

AIIMS-26.05.2019 Shift-II

Organisms and Populations

231193 Match the column:
| | A | B | C |
| ---: | :--- | :--- | :--- |
| (i) | + | + | (1) commensalism |
| (ii) | + | - | (2) Competition |
| (iii) | - | - | (3) Parasitism |
| (iv) | + | 0 | (4) Mutualism |

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

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

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

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

Explanation:

: Mutualism $(+, +) \to$ The interaction, in which both the species are benefitted is called mutualism. It is represented as " $4 +, + "$
Parasitism (+, -) $\to$ The interaction, in which only one species benefits and harmful to the other species is called parasitism. it is represented as" +,-".
Competition (-, -) $\to$ In this, organisms of two species use the same limited resource and have a negative impact on each other.it is represented as "-, - ".
Commensalism (+, $0) \to$ The interaction, where one species is benefited and other is unaffected is called commensalism. It is represented as "+, 0 ".

AIIMS-26.05.2018 Shift-I

Organisms and Populations

231194 Which one of the following is a matching pair of certain organism(s) and the kind of association?

1 Shark and sucker fish - commensalism

2 Algae and fungi in lichens - mutualism

3 Orchids growing on trees - parasitism

4 Cuscuta (dodder) growing in other flowering plants - epiphytism.

Explanation:

Lichen is a symbiotic association of an algae and fungi, in which algal partner provide food to the fungal partner by photosynthesis and fungal partner helps in the absorption of water and minerals. Hence
- Mutualism $(+, +)$ is a type of symbiotic association between two organisms in which both are benefited.
- Commensalism $(+, 0)$ :- It is a type of symbiotic relationship, where one organism benefits and the other organism isn't benefited or harmed either way ex- Orchids growing on branches.
- Parasitism (+, - ):- Parasitism is a relationship between the two living species in which one organism is benefitted at the expense of the other exCuscuta growing on other flowering plant.
- Epiphytism:- A form of mutualism in which one plant lives on the surface of another, as mosses on a tree.

AIIMS-2003

Organisms and Populations

231191 Match the correct column
| (I) | (II) | (III) |
| :--- | :--- | :--- |
| (P) Parasitism | (i),- 0 | (A) Both get
benefitted |
| (Q)
Amensalism | (ii),-- | (B) One get harmed
other has no effect |
| (R)
Competition | (iii),+- | (C) Both get harmed |
| (S) Mutualism | (iv),++ | (D) One is harmed
and second is
benefited |

1

P - i i i - D, Q - i - B, R - i i - C, S - i v - A

2

P - i i - C, Q - i - B, R - i i i - D, S - i v - A

3

P - i i i - D, Q - i - A, R - i i - C, S - i v - B

4

P - i i i - A, Q - i - B, R - i i - D, S - i v - A

Explanation:

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 $(-, 0)$ 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 organism 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.

AIIMS-25.05.2019 Shift-II

Organisms and Populations

231192 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 |

1

A - iv - Q, B - iii - P, C - ii - S, D - i - R

2

A - i - Q, B - ii - P, C - iii - S, D - iv - R

3

A - i - Q, B - iii - P, C - ii - S

, D- iv

- R

4

A -

iv

- Q, B - ii - P, C - iii - S, D - i - R

Explanation:

Exp:
| :--- | :--- | :--- |
| (A) + | (iv) $0$ | (Q) Commensalism |
| (B) - | (iii) $0$ | (P) Amensalism |
| (C) - | (ii) - | (S) Competition |
| (D) + | (i) - | (R) Predation |
- Commensalism is a long term biological interaction in which members of one species gain benefits while those of the other species neither benefit nor are harmed. It is denoted by,+ 0.
- 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 it is denoted by,- 0.
- Competition is an interaction between organisms or species in which both the organisms or species are harmed. It is represented by -,-.
- Predation is biological interaction where one organism, the predator, kills and eats another organism, its prey. It is denoted by,+-.

AIIMS-26.05.2019 Shift-II

Organisms and Populations

231193 Match the column:
| | A | B | C |
| ---: | :--- | :--- | :--- |
| (i) | + | + | (1) commensalism |
| (ii) | + | - | (2) Competition |
| (iii) | - | - | (3) Parasitism |
| (iv) | + | 0 | (4) Mutualism |

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

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

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

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

Explanation:

: Mutualism $(+, +) \to$ The interaction, in which both the species are benefitted is called mutualism. It is represented as " $4 +, + "$
Parasitism (+, -) $\to$ The interaction, in which only one species benefits and harmful to the other species is called parasitism. it is represented as" +,-".
Competition (-, -) $\to$ In this, organisms of two species use the same limited resource and have a negative impact on each other.it is represented as "-, - ".
Commensalism (+, $0) \to$ The interaction, where one species is benefited and other is unaffected is called commensalism. It is represented as "+, 0 ".

AIIMS-26.05.2018 Shift-I

Organisms and Populations

231194 Which one of the following is a matching pair of certain organism(s) and the kind of association?

1 Shark and sucker fish - commensalism

2 Algae and fungi in lichens - mutualism

3 Orchids growing on trees - parasitism

4 Cuscuta (dodder) growing in other flowering plants - epiphytism.

Explanation:

Lichen is a symbiotic association of an algae and fungi, in which algal partner provide food to the fungal partner by photosynthesis and fungal partner helps in the absorption of water and minerals. Hence
- Mutualism $(+, +)$ is a type of symbiotic association between two organisms in which both are benefited.
- Commensalism $(+, 0)$ :- It is a type of symbiotic relationship, where one organism benefits and the other organism isn't benefited or harmed either way ex- Orchids growing on branches.
- Parasitism (+, - ):- Parasitism is a relationship between the two living species in which one organism is benefitted at the expense of the other exCuscuta growing on other flowering plant.
- Epiphytism:- A form of mutualism in which one plant lives on the surface of another, as mosses on a tree.

AIIMS-2003

Organisms and Populations

231191 Match the correct column
| (I) | (II) | (III) |
| :--- | :--- | :--- |
| (P) Parasitism | (i),- 0 | (A) Both get
benefitted |
| (Q)
Amensalism | (ii),-- | (B) One get harmed
other has no effect |
| (R)
Competition | (iii),+- | (C) Both get harmed |
| (S) Mutualism | (iv),++ | (D) One is harmed
and second is
benefited |

1

P - i i i - D, Q - i - B, R - i i - C, S - i v - A

2

P - i i - C, Q - i - B, R - i i i - D, S - i v - A

3

P - i i i - D, Q - i - A, R - i i - C, S - i v - B

4

P - i i i - A, Q - i - B, R - i i - D, S - i v - A

Explanation:

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 $(-, 0)$ 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 organism 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.

AIIMS-25.05.2019 Shift-II

Organisms and Populations

231192 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 |

1

A - iv - Q, B - iii - P, C - ii - S, D - i - R

2

A - i - Q, B - ii - P, C - iii - S, D - iv - R

3

A - i - Q, B - iii - P, C - ii - S

, D- iv

- R

4

A -

iv

- Q, B - ii - P, C - iii - S, D - i - R

Explanation:

Exp:
| :--- | :--- | :--- |
| (A) + | (iv) $0$ | (Q) Commensalism |
| (B) - | (iii) $0$ | (P) Amensalism |
| (C) - | (ii) - | (S) Competition |
| (D) + | (i) - | (R) Predation |
- Commensalism is a long term biological interaction in which members of one species gain benefits while those of the other species neither benefit nor are harmed. It is denoted by,+ 0.
- 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 it is denoted by,- 0.
- Competition is an interaction between organisms or species in which both the organisms or species are harmed. It is represented by -,-.
- Predation is biological interaction where one organism, the predator, kills and eats another organism, its prey. It is denoted by,+-.

AIIMS-26.05.2019 Shift-II

Organisms and Populations

231193 Match the column:
| | A | B | C |
| ---: | :--- | :--- | :--- |
| (i) | + | + | (1) commensalism |
| (ii) | + | - | (2) Competition |
| (iii) | - | - | (3) Parasitism |
| (iv) | + | 0 | (4) Mutualism |

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

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

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

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

Explanation:

: Mutualism $(+, +) \to$ The interaction, in which both the species are benefitted is called mutualism. It is represented as " $4 +, + "$
Parasitism (+, -) $\to$ The interaction, in which only one species benefits and harmful to the other species is called parasitism. it is represented as" +,-".
Competition (-, -) $\to$ In this, organisms of two species use the same limited resource and have a negative impact on each other.it is represented as "-, - ".
Commensalism (+, $0) \to$ The interaction, where one species is benefited and other is unaffected is called commensalism. It is represented as "+, 0 ".

AIIMS-26.05.2018 Shift-I

Organisms and Populations

231194 Which one of the following is a matching pair of certain organism(s) and the kind of association?

1 Shark and sucker fish - commensalism

2 Algae and fungi in lichens - mutualism

3 Orchids growing on trees - parasitism

4 Cuscuta (dodder) growing in other flowering plants - epiphytism.

Explanation:

Lichen is a symbiotic association of an algae and fungi, in which algal partner provide food to the fungal partner by photosynthesis and fungal partner helps in the absorption of water and minerals. Hence
- Mutualism $(+, +)$ is a type of symbiotic association between two organisms in which both are benefited.
- Commensalism $(+, 0)$ :- It is a type of symbiotic relationship, where one organism benefits and the other organism isn't benefited or harmed either way ex- Orchids growing on branches.
- Parasitism (+, - ):- Parasitism is a relationship between the two living species in which one organism is benefitted at the expense of the other exCuscuta growing on other flowering plant.
- Epiphytism:- A form of mutualism in which one plant lives on the surface of another, as mosses on a tree.

AIIMS-2003

Organisms and Populations

231191 Match the correct column
| (I) | (II) | (III) |
| :--- | :--- | :--- |
| (P) Parasitism | (i),- 0 | (A) Both get
benefitted |
| (Q)
Amensalism | (ii),-- | (B) One get harmed
other has no effect |
| (R)
Competition | (iii),+- | (C) Both get harmed |
| (S) Mutualism | (iv),++ | (D) One is harmed
and second is
benefited |

1

P - i i i - D, Q - i - B, R - i i - C, S - i v - A

2

P - i i - C, Q - i - B, R - i i i - D, S - i v - A

3

P - i i i - D, Q - i - A, R - i i - C, S - i v - B

4

P - i i i - A, Q - i - B, R - i i - D, S - i v - A

Explanation:

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 $(-, 0)$ 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 organism 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.

AIIMS-25.05.2019 Shift-II

Organisms and Populations

231192 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 |

1

A - iv - Q, B - iii - P, C - ii - S, D - i - R

2

A - i - Q, B - ii - P, C - iii - S, D - iv - R

3

A - i - Q, B - iii - P, C - ii - S

, D- iv

- R

4

A -

iv

- Q, B - ii - P, C - iii - S, D - i - R

Explanation:

Exp:
| :--- | :--- | :--- |
| (A) + | (iv) $0$ | (Q) Commensalism |
| (B) - | (iii) $0$ | (P) Amensalism |
| (C) - | (ii) - | (S) Competition |
| (D) + | (i) - | (R) Predation |
- Commensalism is a long term biological interaction in which members of one species gain benefits while those of the other species neither benefit nor are harmed. It is denoted by,+ 0.
- 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 it is denoted by,- 0.
- Competition is an interaction between organisms or species in which both the organisms or species are harmed. It is represented by -,-.
- Predation is biological interaction where one organism, the predator, kills and eats another organism, its prey. It is denoted by,+-.

AIIMS-26.05.2019 Shift-II

Organisms and Populations

231193 Match the column:
| | A | B | C |
| ---: | :--- | :--- | :--- |
| (i) | + | + | (1) commensalism |
| (ii) | + | - | (2) Competition |
| (iii) | - | - | (3) Parasitism |
| (iv) | + | 0 | (4) Mutualism |

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

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

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

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

Explanation:

: Mutualism $(+, +) \to$ The interaction, in which both the species are benefitted is called mutualism. It is represented as " $4 +, + "$
Parasitism (+, -) $\to$ The interaction, in which only one species benefits and harmful to the other species is called parasitism. it is represented as" +,-".
Competition (-, -) $\to$ In this, organisms of two species use the same limited resource and have a negative impact on each other.it is represented as "-, - ".
Commensalism (+, $0) \to$ The interaction, where one species is benefited and other is unaffected is called commensalism. It is represented as "+, 0 ".

AIIMS-26.05.2018 Shift-I

Organisms and Populations

231194 Which one of the following is a matching pair of certain organism(s) and the kind of association?

1 Shark and sucker fish - commensalism

2 Algae and fungi in lichens - mutualism

3 Orchids growing on trees - parasitism

4 Cuscuta (dodder) growing in other flowering plants - epiphytism.

Explanation:

Lichen is a symbiotic association of an algae and fungi, in which algal partner provide food to the fungal partner by photosynthesis and fungal partner helps in the absorption of water and minerals. Hence
- Mutualism $(+, +)$ is a type of symbiotic association between two organisms in which both are benefited.
- Commensalism $(+, 0)$ :- It is a type of symbiotic relationship, where one organism benefits and the other organism isn't benefited or harmed either way ex- Orchids growing on branches.
- Parasitism (+, - ):- Parasitism is a relationship between the two living species in which one organism is benefitted at the expense of the other exCuscuta growing on other flowering plant.
- Epiphytism:- A form of mutualism in which one plant lives on the surface of another, as mosses on a tree.

AIIMS-2003

Question Bank Series

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Question Bank Series

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