131.
Joint Forest Management Concept was introduced in India during
A
1960 $$s$$
B
1970 $$s$$
C
1980 $$s$$
D
1990 $$s$$
Answer :
1980 $$s$$
Discuss Question
No explanation is given for this question. Let's discuss the answer together.
132.
Species diversity in an ecosystem mainly depends on
A
Light intensity
B
Temperature
C
Rain fall
D
Soil type
Answer :
Rain fall
Discuss Question
No explanation is given for this question. Let's discuss the answer together.
133.
When the two ecosystems overlap each other the area is called
A
Ecotone
B
Niche
C
Edge effect
D
Ecotypes
Answer :
Ecotone
Discuss Question
No explanation is given for this question. Let's discuss the answer together.
134.
A lake with an inflow of domestic sewage rich in organic waste may result in
A
Drying of the lake very soon due to algal bloom
B
An increased production of fish due to lot of nutrients
C
Death of fish due to lack of oxygen
D
Increased population of aquatic food web organisms
Answer :
Death of fish due to lack of oxygen
Discuss Question
No explanation is given for this question. Let's discuss the answer together.
135.
Which one of the following pairs of organisms are exotic species introduced in India
A
Nile perch, Ficus religiosa
B
Ficus religiosa, Lantana camara
C
Lantana camara, Water hyacinth
D
Water hyacinth, Prosopis cineraria
Answer :
Lantana camara, Water hyacinth
Discuss Question
No explanation is given for this question. Let's discuss the answer together.
136.
Sewage purification is performed by
A
Microbes
B
Fertilisers
C
Antibiotics
D
Antiseptics
Answer :
Microbes
Discuss Question
No explanation is given for this question. Let's discuss the answer together.
137.
Domestic waste constitutes
A
Nonbiodegradable pollution
B
Biodegradable pollution
C
Effluents
D
Air pollution
Answer :
Biodegradable pollution
Discuss Question
No explanation is given for this question. Let's discuss the answer together.
138.
All the following contribute to pollution except
A
Thermal power plant
B
Automobiles
C
Nuclear power plant
D
Hydroelectric power project
Answer :
Hydroelectric power project
Discuss Question
No explanation is given for this question. Let's discuss the answer together.
139.
In an ecosystem
A
Primary producers are more than primary consumers
B
Primary consumers are larger than primary producers
C
Secondary consumers are larger than primary producers
D
Primary consumers are least depend on primary producers
Answer :
Primary producers are more than primary consumers
Discuss Question
No explanation is given for this question. Let's discuss the answer together.
140.
In a food chain, the total amount of living material is depicted by
A
Pyramid of biomass
B
Pyramid of energy
C
Pyramid of number
D
Trophic levels
Answer :
Pyramid of biomass
Discuss Question
No explanation is given for this question. Let's discuss the answer together.