Match the following and choose the correct combination from the options given below. Column I Column II A. Mutualism 1. Lion and deer. B. Commensalism 2. Roundworm and man. C. Parasitism 3. Birds compete with squirrels for nuts. D. Competition 4. Sea anemone on a Hermit crab. E. Predation 5. Barnacles attached to Whales. The correct match is:

A - 4 , B - 5 , C - 2 , D - 3 , E - 1

A - 3 , B - 1 , C - 4 , D - 2 , E - 5

A - 2 , B - 3 , C - 1 , D - 5 , E - 4

A - 5 , B - 4 , C - 2 , D - 3 , E - 1

Fill in the blanks Species A Species B Type of Interaction Example + _____ _____ _____ + + _____ _____ + _____ Commensalism _____

Species A Species B Type of Interaction Example + - Parasitism/ Predation Cuscuta on the host plant, Lion and deer Parasitism is a relationship between two organisms of different species in which one organism called parasite obtains its food directly from another living organism called the host. Predation is the interaction between the organisms of different species in which one organism captures, kills, and eats up the members of other species. Species A Species B Type of Interaction Example + + Mutualism Lichen, Mycorrhiza Mutualism is an interaction between two organisms of different species where both the partners are benefited. Mycorrhiza is the association between fungi and the roots of higher plants. The fungi help the plant in the absorption of nutrients from the soil while the plant provides food for the fungi. Species A Species B Type of Interaction Example + 0 Commensalism Shark and sucker-fish, Sea anemone and clown-fish Commensalism is a type of interaction between two organisms of different species in which one is benefited from its partner and another organism is neither harmed nor benefited. In the association between a shark and a suckerfish, the suckerfish get the benefit (food and protection) from the shark while shark doesn't get any benefit or harm.

EASY

Earn 100

Give an example of hyperparasite.

Important Questions on Ecology and Ecological Organisation

HARD

Life Science>Environment and Its Resources>Ecology and Ecological Organisation>Ecological Interactions at Community Level

Why cannot a population live alone by itself in nature?

MEDIUM

Life Science>Environment and Its Resources>Ecology and Ecological Organisation>Ecological Interactions at Community Level

Which of the following would be true of a species with an opportunistic life history?

HARD

Life Science>Environment and Its Resources>Ecology and Ecological Organisation>Ecological Interactions at Community Level

Match the following and choose the correct combination from the options given below.

	Column I		Column II
A.	Mutualism	1.	Lion and deer.
B.	Commensalism	2.	Roundworm and man.
C.	Parasitism	3.	Birds compete with squirrels for nuts.
D.	Competition	4.	Sea anemone on a Hermit crab.
E.	Predation	5.	Barnacles attached to Whales.

The correct match is:

EASY

Life Science>Environment and Its Resources>Ecology and Ecological Organisation>Ecological Interactions at Community Level

Define ectoparasite and endoparasite, and give suitable examples.

EASY

Life Science>Environment and Its Resources>Ecology and Ecological Organisation>Ecological Interactions at Community Level

Why are there no predators for lions or tigers ?

HARD

Life Science>Environment and Its Resources>Ecology and Ecological Organisation>Ecological Interactions at Community Level

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

EASY

Life Science>Environment and Its Resources>Ecology and Ecological Organisation>Ecological Interactions at Community Level

Write any two major reasons for the population explosion in the world/India.

MEDIUM

Life Science>Environment and Its Resources>Ecology and Ecological Organisation>Ecological Interactions at Community Level

Robert Malthus in his Essay on Population stated that _____.

MEDIUM

Life Science>Environment and Its Resources>Ecology and Ecological Organisation>Ecological Interactions at Community Level

Which of the following is a partial root parasite?

EASY

Life Science>Environment and Its Resources>Ecology and Ecological Organisation>Ecological Interactions at Community Level

Ophrys an orchid resembling the female of an insect so as to able to get pollinated is due to phenomenon of