Match column-I with column-II and select the correct option. Column-I Column-II a) Commensalism i) Lichen b) Mutualism ii) Plasmodium c) Parasitism iii) Hawk d) Predation iv) Orchid

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

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

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

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

Match the following. The correct combinations are The list I List II List III (a) Fig tree (i) Highly distasteful (p) Petals of its flower (b) Ophrys (ii) Cryptically coloured (q) Special chemical present (c) Sea anemone (iii) Wasp (r) Clownfish (d) Camouflage (iv) Sexual deceit (s) Developing seeds (e) Monarch butterfly (v) Stinging cells (t) Insects and frogs

(a-ii-s), (b-iv-p), (c-v-r), (d-ii-t), (e-i-q)

(a-iv-p), (b-ii-t), (c-v-r), (d-ii-q), (e-i-s)

(a-i-q), (b-iii-s), (c-v-r), (d-ii-t), (e-iv-p)

(a-ii-p), (b-iv-s), (c-v-r), (d-ii-t), (e-i-q)

Match Column - I with Column - II Column-I Column-II a Saprophyte i Symbiotic association of fungi with plant roots b Parasite i i Decomposition of dead organic materials c Lichens i i i Living on living plants d Mycorrhiza i v Symbiotic association of algae and fungi Choose the correct answer from the options given below:

a - i i ; b - i i i ; c - i v ; d - i

a - i ; b - i i ; c - i i i ; d - i v

a - i i i ; b - i i ; c - i ; d - i v

a - i i ; b - i ; c - i i i ; d - i v

Match the following? The list I List II (i) Calotropis (a) Predator of Americana Pacific (ii) Cactus (b) Insects and frogs cryptically coloured (iii) Pisaster (c) Distasteful glycosides (iv) Monarch Butterfly (d) Cardiac glycosides (v) Camouflage (e) Predator is a moth

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

(i-c), (ii-e), (iii-a), (i -d) and (v-b)

(i-a), (ii-d), (iii-e), (i -c) and (v-b)

(i-e), (ii-d), (iii-c), (i -d) and (v-b)

Write short note on Commensalism

MEDIUM

Biology>Ecology>Organisms and Populations>Population

Assertion (A): The Monarch butterfly feeds on poisonous weeds during its caterpillar stage.

Reason (R): It helps butterfly to become distasteful to the predator.

HARD

Biology>Ecology>Organisms and Populations>Population

Which of the following statements is/are incorrect?
1) The human liver fluke, a nematode parasite, depends on two intermediate hosts (a snail and a fish) to complete its life cycle.
2) The malarial parasite needs a vector (mosquito) to spread to other host organisms.
3) In case of brood parasitism, the eggs of parasitic birds (e.g., cuckoo) are not detected and removed from the nest because the parasite's eggs resemble the host's eggs in morphology and colour.
4) A population of frogs protected from all predators would decrease indefinitely.

EASY

Biology>Ecology>Organisms and Populations>Population

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

MEDIUM

Biology>Ecology>Organisms and Populations>Population

Match column-I with column-II and select the correct option.

Column-I		Column-II
a)	Commensalism	i)	Lichen
b)	Mutualism	ii)	Plasmodium
c)	Parasitism	iii)	Hawk
d)	Predation	iv)	Orchid

HARD

Biology>Ecology>Organisms and Populations>Population

In some species, individuals forego reproduction and help bring up another individual's offspring. Such altruistic behavior CANNOT be explained by which of the following?

EASY

Biology>Ecology>Organisms and Populations>Population

The function of aposematic colouration is to

HARD

Biology>Ecology>Organisms and Populations>Population

Given the graphs below, the interaction between species $1$ and $2$ can be classified as

Question Image

EASY

Biology>Ecology>Organisms and Populations>Population

Match the following. The correct combinations are

The list I		List II		List III
(a)	Fig tree	(i)	Highly distasteful	(p)	Petals of its flower
(b)	Ophrys	(ii)	Cryptically coloured	(q)	Special chemical present
(c)	Sea anemone	(iii)	Wasp	(r)	Clownfish
(d)	Camouflage	(iv)	Sexual deceit	(s)	Developing seeds
(e)	Monarch butterfly	(v)	Stinging cells	(t)	Insects and frogs

MEDIUM

Biology>Ecology>Organisms and Populations>Population

The figure below demonstrates the growth curves of two organisms A and B growing in the same area. What kind of relation exists between A and B?

Question Image

HARD

Biology>Ecology>Organisms and Populations>Population

Match Column - I with Column - II

	Column-I		Column-II
$(a)$	Saprophyte	$(i)$	Symbiotic association of fungi with plant roots
$(b)$	Parasite	$(i i)$	Decomposition of dead organic materials
$(c)$	Lichens	$(i i i)$	Living on living plants
$(d)$	Mycorrhiza	$(i v)$	Symbiotic association of algae and fungi

Choose the correct answer from the options given below:

EASY

Biology>Ecology>Organisms and Populations>Population

Amensalism can be represented as:

EASY

Biology>Ecology>Organisms and Populations>Population

The monarch butterfly avoids predators such as birds by:

EASY

Biology>Ecology>Organisms and Populations>Population

Inspite of interspecific competition in nature, which mechanism the competing species might have evolved for their survival?

EASY

Biology>Ecology>Organisms and Populations>Population

From the given options, identify the correct combination of population interactions that correspond to the symbols given here.

EASY

Biology>Ecology>Organisms and Populations>Population

Match the following?

The list I		List II
(i)	Calotropis	(a)	Predator of Americana Pacific
(ii)	Cactus	(b)	Insects and frogs cryptically coloured
(iii)	Pisaster	(c)	Distasteful glycosides
(iv)	Monarch Butterfly	(d)	Cardiac glycosides
(v)	Camouflage	(e)	Predator is a moth

MEDIUM

Biology>Ecology>Organisms and Populations>Population

Study the following table and pick up the correct combinations.

S.No	Type of parasite	Lives in host	Example
I)	Cytozoic parasites	Live among cells of tissues of host	Plasmodium
II)	Histozoic parasites	Live within the host's cells	Wuchereria
III)	Coelozoic parasites	Live in cavities of host	Ascaris
IV)	Hyperparasites	Lives in the body of another parasite	Nosema

MEDIUM

Biology>Ecology>Organisms and Populations>Population

Study the following table and pick up the correct combinations.

S.No.	Interaction	Species A	Species B
I)	Mutualism	$+$	$+$
II)	Competition	$-$	$+$
III)	Predation	$+$	$-$
IV)	Parasitism	$-$	$-$
V)	Commensalism	$0$	$+$
VI)	Amensalism	$-$	$0$

EASY

Biology>Ecology>Organisms and Populations>Population

Which of the following statements is incorrect?

EASY

Biology>Ecology>Organisms and Populations>Population

Which of the following interactions does NOT promote coevolution?

EASY

Biology>Ecology>Organisms and Populations>Population

If ' $+$ ' sign is assigned to beneficial interaction, ' $-$ ' sign to detrimental and ' $0$ ' sign to neutral interaction, then the population interaction represented by '+' '-' refers to

Write short note on

Commensalism

Important Questions on Organisms and Populations

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