Biotic Components

Q.

Which among the following is a biotic component?

1. Temperature

2. Water

3. Soil

4. Bacteria and fungi

Q. Animals which feed on plants are called (i) . Since (i) convert plant matter into animal matter, they are often called (ii).
Here, (i) and (ii) respectively are

1. Primary consumers and carnivores
2. Secondary consumers and carnivores
3. Herbivores and key industry animals
4. Omnivores and detritivores

Q. Statement-1: Detritivores are the animals which feed on dead remains of plants and animals.
Statement-2: Decomposers are the micro-organisms which secrete digestive enzymes over dead organic matter to convert it into simpler and soluble organic substances.

1. Both the statements are correct
2. Both the statements are incorrect
3. Only statement-1 is correct
4. Only statement-2 is correct

Q.

Question 14
Which of the statement is incorrect?

(a) All green plants and blue-green algae are producers
(b) Green plants get their food from organic compounds
(c) Producers prepare their own food from inorganic compounds
(d) Plants convert solar energy into chemical energy

Q. Question 13
In the soil, which nutrient is enriched by blue-green algae (cyanobacteria)?

Q.

Plants, animals, microbes, weather, soil and water are all components of a/an ___

Q.

Question 27
Suggest one word for each of the following statements/ definitions

(a) The physical and biological world where we live in
(b) Each level of food chain where transfer of energy takes place
(c) The physical factors like temperature, rainfall, wind and soil of an ecosystem
(d) Organisms which depend on the producers either directly or indirectly for food

Q. Which of the following organisms indirectly depends on the producer for its sustenance?

1. Rabbit
2. Lion
3. Deer
4. Cow

Q.

Which of the following pair is the one which shows abiotic: biotic component combination?

1. Temperature: Micro organism

2. Micro organism: Plant

3. Microorganism: Human being

4. Soil: Temperature

Q.

Humans cannot digest high fibre containing substances like grass. This is because humans:

1. Have shorter alimentary canal than herbivores.

2. Have longer alimentary canal than herbivores.

3. Do not produce cellulose digesting enzymes.

4. Have evolved to have only cooked leaves.

Q. Which of the following is not a producer?

1. grass
2. phytoplankton
3. zooplankton
4. paddy

Q. Which of the following is a marine organism?

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

Q. Animals which feed on plants are called (i) . Since (i) convert plant matter into animal matter, they are often called (ii).
Here, (i) and (ii) respectively are

1. Herbivores and key industry animals
2. Secondary consumers and carnivores
3. Omnivores and detritivores
4. Primary consumers and carnivores

Q. Pick the example of a terrestrial ecosystem.

1. Ocean
2. Pond
3. Forest
4. Stream

Q. Statement-1: Detritivores are the animals which feed on dead remains of plants and animals.
Statement-2: Decomposers are the micro-organisms which secrete digestive enzymes over dead organic matter to convert it into simpler and soluble organic substances.

1. Both the statements are correct
2. Both the statements are incorrect
3. Only statement-1 is correct
4. Only statement-2 is correct

Q.

Define Producer

Q. Animals which feed on plants are called (i) . Since (i) convert plant matter into animal matter, they are often called (ii).
Here, (i) and (ii) respectively are

1. Secondary consumers and carnivores
2. Herbivores and key industry animals
3. Primary consumers and carnivores
4. Omnivores and detritivores

Q. In a grazing food chain, grass is at trophic level.

1. first
2. second
3. third
4. fourth

Q. Which of the following organisms indirectly depends on the producer for its sustenance?