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 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 items in Column - I with those in Column - II : Column - I Column - II (a) Herbivores-Plants (i) Commensalism (b) Mycorrhiza-Plants (ii) Mutualism (c) Sheep-Cattle (iii) Predation (d) Orchid-Tree (iv) Competition Select the correct option from following:

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

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

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

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

MEDIUM

Earn 100

What are the main difference between living and non-living things?

Important Questions on Organisms and Habitat

HARD

Science>Biology>Organisms and Habitat>Living Things and Non-living Things

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

Question Image

HARD

Science>Biology>Organisms and Habitat>Living Things and Non-living Things

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:

MEDIUM

Science>Biology>Organisms and Habitat>Living Things and Non-living Things

Gause's competitive exclusion principle states that the two species cannot co-exist indefinitely and the competitively superior species will eventually eliminate the other species Which of the following statements are correct regarding validity of the Gause's principle.

A)

If resources are limited

B)

If two species occupy different niches

C)

If resource partitioning takes place between two species

D)

If two species occupy identical niche

EASY

Science>Biology>Organisms and Habitat>Living Things and Non-living Things

Relate Column I with Column II with regard to predatory behaviour

	Column-I		Column-I
$1 .$	Calotropis	p.	Invertebrates
$2 .$	Pisaster	q.	Distasteful
$3 .$	Monarch butterfly	r.	Cryptically coloured
$4 .$	Frogs	s.	Cardioglycoside

EASY

Science>Biology>Organisms and Habitat>Living Things and Non-living Things

In which of the following interaction both partners are adversely affected?

MEDIUM

Science>Biology>Organisms and Habitat>Living Things and Non-living Things

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>Organisms and Habitat>Living Things and Non-living Things

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.

MEDIUM

Science>Biology>Organisms and Habitat>Living Things and Non-living Things

Match the items in Column $- I$ with those in Column $- II$ :

Column $- I$		Column $- II$
(a)	Herbivores-Plants	(i)	Commensalism
(b)	Mycorrhiza-Plants	(ii)	Mutualism
(c)	Sheep-Cattle	(iii)	Predation
(d)	Orchid-Tree	(iv)	Competition

Select the correct option from following:

MEDIUM

Science>Biology>Organisms and Habitat>Living Things and Non-living Things

The following graph depicts changes in two populations (A and B) of herbivores in a grassy field. A possible reason for these changes is that.

Question Image

EASY

Science>Biology>Organisms and Habitat>Living Things and Non-living Things

Which of the following interactions does NOT promote coevolution?

EASY