In a pond ecosystem, profundal zone is missing because?
a) water is turbid
b) pond is shallow
c) producers are less
d) water is turbulent
Explanation: The profundal zone is a deep zone of an inland body of freestanding water, such as a lake or pond, located below the range of effective light penetration.
Which of the following is/are the important factor/s for productivity in oceans?
a) light
b) nutrients
c) water
d) both a and b
Which of the following is/are the important factor/s for productivity in oceans?
a) light
b) nutrients
c) water
d) both a and b
An ecological pyramid is a graphical representation designed to show the …
a) number of organisms
b) energy relationships
c) biomass of an ecosystem
d) all of these
Explanation: these are also called Estonian pyramids after Charles Elton who developed the concept of ecological pyramids
Which of the following organisms form the base of the ecological pyramid?
a) producers
b) decomposers
c) consumers
d) primary consumers
Explanation: producers are usually green plants
There are ……..types of pyramids.
a) two
b) three
c) four
d) five
Explanation: 1. number, 2. Biomass and 3. energy
