Ecosystem and Its Characteristics

Q.

How many types of ecosystem are there?

Q.

What is a sustainable ecosystem?

Q. Which among the following are biotic components of an ecosystem?

1. Producers
2. Consumers
3. Decomposers
4. Air

Q.

Plants and animals living in a habitat are known as __ components.

Q. Which one of the following is not an artificial ecosystem?

1. Pond
2. Crop field
3. Lake
4. Forest

Q.

Explain the interaction within biotic components of environment and energy flow

Q. Which of the following is/are true about an ecosystem?

1. Ecosystem consists of biological community and physical environment.
2. Ecosystem may have fixed or varying environment.
3. Ecosystem can be as small as a droplet of water or as large as Earth.
4. Ecosystems always stay constant.

Q. Name and explain Biotic components of an ecosystem.

Q.

Question 3 (c)

Fill up the blank
The habitats of plants and animals that live in water are called ___ habitat.

Q. Which of the following are natural ecosystems?

1. Pond
2. Crop field
3. Forest
4. Lake

Q.

__ is the surrounding where an organism lives.

Q.

What Makes an Ecosystem?

Q.

A sequence of species through which the organic molecules in a community pass is called

1. Food chain

2. Food web

3. Food cycle

4. Nutrient cycle

Q. Trophic level means _____.

1. stage in a food chain
2. axis around earth
3. energy level in a food web
4. stage in an ecological habitat

Q. Define an ecosystem. Explain it with a suitable example.

Q. ___________ occupy first trophic level of the food chain.

1. Herbivores
2. Carnivores
3. Producers
4. Decomposers

Q. Sort the following statements based on their respective ecosystems.

a. These are areas which receive average rainfall less than 23 mm per year.
b. They serve as feeding and breeding ground for commercially important organisms.
c. Only few animals are found here due to harsh conditions.
d. They influence the climatic conditions, nutrient dynamics and water movement.

1. Mangrove ecosystem: b
   Desert ecosystem: a, c
   Forest ecosystem: b, d
2. Mangrove ecosystem: a
   Desert ecosystem: c, d
   Forest ecosystem: b
3. Mangrove ecosystem: a
   Desert ecosystem: b, d
   Forest ecosystem: c
4. Mangrove ecosystem: b
   Desert ecosystem: c
   Forest ecosystem: d, a

Q.

Based on their mode of ____ organisms are classified into producers, consumers and decomposers.

1. nutrition
2. growth
3. reproduction
4. digestion

Q. Which of the following is a marine organism?

1. Monkey
2. Lion
3. Cockroach
4. Octopus

Q. Ecosystem is defined as the interaction between the community of organisms with their external environment.

1. False
2. True

Q.

What are trophic levels? How many trophic levels can a food chain have?

Q. What will be the direction of energy flow if a grasshopper is eaten by a frog?

1. Producer to decomposer
2. Producer to primary consumer
3. Primary consumer to secondary consumer
4. Secondary consumer to primary consumer

Q. can be defined as the place where organisms live.

Q. Habitat of an organism is the place where it lives.

1. False
2. True

Q. Abiotic factor is the living and the biotic factor is the non-living component of an ecosystem.

1. False
2. True

Q. Match the organisms with their respective mode of nutrition.

1. Saprotrophic
2. Banyan tree
3. Autotrophic
4. Leech
5. Mushroom
6. Parasitic

Q. A is a large area that experiences similar climatic conditions.

1. habitat
2. niche
3. biome

Q. All organisms either directly or indirectly depend on plants for food.

1. False
2. True

Q. The biotic and abiotic components interact with each other and form .

1. a population
2. a community
3. an ecosystem

Q. Which among the following is likely to have the highest levels of DDT depositions in its body?

1. Eel
2. Crab
3. Sea gull
4. Phytoplankton