Secondary Productivity

Q. Secondary productivity is rate of formation of new organic matter by

1. consumers
2. decomposers
3. producers
4. parasites

Q.

What is secondary productivity?

Q. The rate of formation of new organic matter by rabbit in a grassland, is called:

1. Secondary productivity
2. Net productivity
3. Net primary productivity
4. Gross primary productivity

Q.

What is meant by energy flow in an ecosystem?

Q. Rate of formation or generation of new biomass by heterotrophic organisms or consumers is known as productivity.

1. net primary
2. gross primary
3. secondary

Q. Consider the following four statements (A-D) and select the correct option stating which ones are true (T) and which ones are false (F). Statements :

(A) Vertical distribution of different species occupying different levels in a community is called stratification.
(B) Net primary productivity minus respiration losses is the gross primary productivity.
(C) Rate of biomass production is called decomposition
(D) Annual net primary productivity of oceans is 55 billion tons

1. F T F T
2. T F T F
3. F T F F
   
4. T F F T

Q. Each trophic level has a certain mass of living material at a particular time called as the standing crop. The standing crop is measured as the mass of living organism (biomass) or the number in a unit area . The biomass of a species is expressed in terms of fresh or dry weight. Measurement of biomass in terms of dry weight is more accurate .Why?

Q. Secondary productivity is the rate of formation of new organic matter by :

1. Producer
2. Parasite
3. Consumer
4. Decomposer

Q.

1. Why does only a part of energy gets transferred from one trophic level to the next higher?
2. Where does the rest of the energy go?
3. Can the lost energy be regained?

Q. Rate of formation or generation of new biomass by heterotrophic organisms or consumers is known as productivity.

1. net primary
2. gross primary
3. secondary

Q. Secondary productivity is

1. Conversion of physical energy into chemical energy at producer level
2. Conversion of physical energy into chemical energy at consumer level
3. The rate of energy storage at consumer level
4. The decomposition of organic matter by decomposers

Q.

Secondary productivity is the rate of formation of new organic matter by

1. consumer

2. producer

3. decompose

4. parasite

Q. _________ is the standing crop biomass which is the available biomass for heterotrophs as a source of nourishment.

1. Primary productivity
2. Secondary productivity
3. Both A and B
4. Only B

Q. Rate of formation or generation of new biomass by heterotrophic organisms or consumers is known as productivity.

1. net primary
2. gross primary
3. secondary

Q. The rate of formation of organic matter by deer in the forest ecosystem is called

1. Secondary productivity
2. Primary productivity
3. Standing crop
4. Net primary productivity

Q. The rate of formation of new organic matter by rabbits in a savanna is termed -

1. Net productivity
2. Secondary productivity
3. Gross primary productivity
4. Net primary productivity

Q.

How nutrients are used again and again?

Q. Which of this is secondary productivity?

1. Energy flow will be blocked
2. Herbivores will not receive solar energy
3. Mineral movement will be blocked
4. Rate of decomposition will be very high

Q. An ecosystem receives $1,000,000J$ of sunlight energy, then what is the energy available at primary producer $\left(T_1\right)$ level?

1. $1,00,000J$
2. $10,000J$
3. $1,000J$
4. $100J$

Q. Energy stored at the consumer level is

1. Gross primary productivity
2. Net primary productivity
3. Net productivity
4. Secondary productivity

Q.

Secondary productivity is the rate of formation of new organic matter by

1. Consumer

2. Parasite

3. Decomposer

4. Producer

Q. Rate of formation of organic matter by rabbit in a grassland is

1. Gross primary production
2. Net productivity
3. Secondary productivity
4. Net primary production

Q. Secondary productivity is the rate of formation of new organic matter by :

1. Producer
2. Decomposer
3. Parasite
4. Consumer

Q. Rate of formation or generation of new biomass by heterotrophic organisms or consumers is known as productivity.

1. net primary
2. gross primary
3. secondary

Q. _________ is the standing crop biomass which is the available biomass for heterotrophs as a source of nourishment.

1. Primary productivity
2. Secondary productivity
3. Both A and B
4. Only B

Q. The rate of formation of new organic matter by rabbit in a grassland is called

1. Secondary productivity.
2. Grass primary productivity.
3. None of the above.
4. Net primary productivity.

Q. The rate at which new tissues are formed in producers in the ecosystem:-

1. NPP
2. Gross secondary productivity
3. GPP
4. Net secondary productivity

Q. The energy storage at consumer level is known as

1. Gross primary productivity
2. Secondary productivity
3. Net primary productivity
4. Net productivity

Q. _________ is the standing crop biomass which is the available biomass for heterotrophs as a source of nourishment.

1. Primary productivity
2. Secondary productivity
3. Both A and B
4. Only B

Q. The rate of formation of new organic matter by rabbits in a savanna is termed -

1. Net productivity
2. Secondary productivity
3. Net primary productivity
4. Gross primary productivity