Grazing Food Chain

Q. In a vegetable field, a person observed that the mouse was being eaten by snake. The snake in turn formed the meal of a hawk. What is the position of snake in the food chain?

1. Transducers
2. Primary consumer
3. Secondary consumer
4. Tertiary consumer

Q. Why there is more energy flow in DFC as compared to GFC in terrestrial ecosystem?

Q.

A food chain consists of _____ .

1. Producers

2. Consumers

3. Decomposers

4. All Of These

Q.

Distinguish between:

(a) Grazing food chain and detritus food chain

(b) Production and decomposition

(c) Upright and inverted pyramid

(d) Food chain and food web

(e) Litter and detritus

(f) Primary and secondary productivity

Q. Match the trophic levels with their correct species names in grassland ecosystem and select the correct option.

	Trophic levels		Species
(a)	Tertiary Consumer	(i)	Grass
(b)	Primary Consumer	(ii)	Crow
(c)	Producers	(iii)	Vulture
(d)	Secondary Consumer	(iv)	Rabbit

1. (a) (b) (c) (d)
   (iv) (i) (ii) (iii)
2. (a) (b) (c) (d)
   (ii) (iii) (iv) (i)
3. (a) (b) (c) (d)
   (iii) (iv) (i) (ii)
4. (a) (b) (c) (d)
   (iii) (iv) (ii) (i)

Q.

Poaching of the tiger is a burning issue in today's world. What implication would this activity have on the functioning of the ecosystem of which the Tigers are an integral part?

Q. Regarding assertion and reason, choose the right option
Assertion [A] : Food chains start with photosynthesis and end with decomposition.
Reason [R]: In an ecosystem, plants produce food and decomposers help in decay of dead matter.

1. Both A and R are true R does not explain A
2. A is true and R is false
3. Both A and R are true and R explains A
4. Both A and R are false

Q. In a vegetable field, a person observed that the mouse was being eaten by snake. The snake in turn formed the meal of a hawk. What is the position of snake in the food chain?

1. Transducers
2. Primary consumer
3. Secondary consumer
4. Tertiary consumer

Q. The following organisms and their relationship represent the :

Dead leaves -------> Wood louse -----> Black bird

1. Food web
2. Grazing food chain
3. Detritus food chain
4. Stratification

Q. Distinguish between.
(A) Grazing food chain and detritus food chain
(B) Production and decomposition
(C) Upright and inverted pyramid
(D) Food chain and food web
(E) Litter and detritus
(F) Primary and secondary productivity

Q. In an ecosystem decomposers, like fungi and bacteria

1. Begin the food chain
2. Both a and b
3. Complete the food chain
4. Initiate the food chain

Q.

Distinguish between

(a) Grazing food chain and detritus food chain

(b) Production and decomposition

(c) Upright and inverted pyramid

(d) Food chain and Food web

(e) Litter and detritus

(f) Primary and secondary productivity

Q. In a vegetable field, a person observed that the mouse was being eaten by snake. The snake in turn formed the meal of a hawk. What is the position of snake in the food chain?

1. Transducers
2. Primary consumer
3. Secondary consumer
4. Tertiary consumer

Q. Write a food chain that occurs in the following :
1) Forest
2) Desert
Also, explain the different levels.

Q. Which of the following defines the role of producers in any grazing food chain?

1. Feed the herbivores
2. Feed the carnivores
3. Clean the atmosphere
4. Capture solar energy

Q. Detritus food chain involves sub soil organisms while grazing food chain ________.

1. Involves macroscopic organisms
2. Fixes inorganic nutrients to soil
3. Begins with carnivores and ends with decomposers
4. None of these

Q. Which among the following factors are responsible for damage to food stuffs?

1. Abiotic
2. Both A and B
3. Biotic
4. None of the above

Q. What is detritus food chain made up of? How do they meet their energy and nutritional requirement?

Q. Which of the following helps in maintaining the supply of nutrients to the growing plants?

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

Q.

The arrangement of organisms ‘who eat whom’ sequentially forms a __________-

Q. Regarding assertion and reason, choose the right option
Assertion [A] : Food chains start with photosynthesis and end with decomposition.
Reason [R]: In an ecosystem, plants produce food and decomposers help in decay of dead matter.

1. Both A and R are true and R explains A
2. Both A and R are true R does not explain A
3. A is true and R is false
4. Both A and R are false

Q.

Detritus food chain begins with:

1. Producer

2. Carnivores

3. Dead organism

4. Decomposer

Q. Wildlife population are decreasing due to _________

1. Afforestation
2. Loss of minerals
3. Poaching
4. Loss of sunlight

Q. Trophic level in a food chain which cycles the various materials between environment and living organisms is constituted by

1. Producers
2. Consumers
3. Decomposers
4. All of the above

Q. Which of the following can act as the top consumer in a grassland ecosystem?

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

Q. Which one of the following has the largest population in a food chain?
(a) Producers
(b) Primary consumers
(c) Secondary consumers
(d) Decomposers

Q. The last chain of food is

1. producers
2. decomposers
3. parasites
4. none of the above