Two organisms benefited from each other.

One organism is benefited and other is harmed.

Both are harmed from each other.

An association in which one is parasite and the other is host.

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 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 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)

Lichens are the associations of

MEDIUM

Science>Biology>How Nature Works in Harmony>Interdependence and Nutrition in Organisms

Define Brood parasitism.

MEDIUM

Science>Biology>How Nature Works in Harmony>Interdependence and Nutrition in Organisms

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

Science>Biology>How Nature Works in Harmony>Interdependence and Nutrition in Organisms

Explain the difference between commensalism and mutualism types of interactions, with the help of a suitable example of each.

MEDIUM

Science>Biology>How Nature Works in Harmony>Interdependence and Nutrition in Organisms

Differentiate between saprophytic and parasitic nutrition.

HARD

Science>Biology>How Nature Works in Harmony>Interdependence and Nutrition in Organisms

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

Question Image

HARD

Science>Biology>How Nature Works in Harmony>Interdependence and Nutrition in Organisms

Mutualism is

EASY

Science>Biology>How Nature Works in Harmony>Interdependence and Nutrition in Organisms

In a population interaction between the species

X

and the species

Y

, which one of the following statements is correct?

MEDIUM

Science>Biology>How Nature Works in Harmony>Interdependence and Nutrition in Organisms

Given below is the example of an ecological/population interaction. Place them under the suitable column provided below.

Lice on humans.

Competition	Parasitism	Mutualism

MEDIUM

Science>Biology>How Nature Works in Harmony>Interdependence and Nutrition in Organisms

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

Science>Biology>How Nature Works in Harmony>Interdependence and Nutrition in Organisms

Name the four main types of heterotropic nutrition.

HARD

Science>Biology>How Nature Works in Harmony>Interdependence and Nutrition in Organisms

Explain mutualism with examples.

HARD

Science>Biology>How Nature Works in Harmony>Interdependence and Nutrition in Organisms

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

Science>Biology>How Nature Works in Harmony>Interdependence and Nutrition in Organisms

Define symbiosis. Give two examples.

EASY

Science>Biology>How Nature Works in Harmony>Interdependence and Nutrition in Organisms

What is Mutualism ? Explain mutualism with suitable examples.

HARD

Science>Biology>How Nature Works in Harmony>Interdependence and Nutrition in Organisms

Draw the diagram of a dicot plant and label the following parts:

(i) Flower

(ii) Root

MEDIUM

Science>Biology>How Nature Works in Harmony>Interdependence and Nutrition in Organisms

Given below is the example of an ecological/population interaction. Place them under the suitable column provided below.

Fig tree and wasp

Competition	Parasitism	Mutualism

MEDIUM

Science>Biology>How Nature Works in Harmony>Interdependence and Nutrition in Organisms

Given below is the example of an ecological/population interaction. Place them under the suitable column provided below.

Algae and fungi in Lichens

Competition	Parasitism	Mutualism

EASY

Science>Biology>How Nature Works in Harmony>Interdependence and Nutrition in Organisms

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

EASY

Science>Biology>How Nature Works in Harmony>Interdependence and Nutrition in Organisms

Which of the following statements is incorrect?

EASY

Science>Biology>How Nature Works in Harmony>Interdependence and Nutrition in Organisms

Which of the following interactions does NOT promote coevolution?

Lichens are the associations of

Important Questions on How Nature Works in Harmony

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