Exam (elaborations)
Lecture 3: Ecosystems And Biogeochemical Cycles
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Lecture 3: Ecosystems And Biogeochemical Cycles
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1Lecture 3: Ecosystems And Biogeochemical Cycles
Ecology is
defined as
"The
science of
the
relations of
(Taylor, 1936)
all
organisms
to all their
environme
nts." Who
said this?
The study of inter-relations of plants and animals
with their environment, including influences of
(G.L. Clarke, 1954)
other plants, animals, and physical features, was
defined by?
The study of animals and plants in their relation
to each other and to their environment" was (S.C. Kendeigh, 1961, 1974)
defined by?
Ecology is the scientific study of relationships
among living organisms and their environments,
focusing on biological interactions among (Pinaka, 1973)
individuals, populations, communities, and
ecosystems.
is an extensive study of living beings or organisms
and their interactions and relationship with the Ecology
environment.
is a subset of ecology focusing on complex
interactions between living things and non-living Ecosystem
things in a community or area
1
,2
is the study of the environment and different
ecosystemswhile the ecosystem is generally the Ecology
subset of the broader ecology.
T OR F: There are general classifications when it
FALSE, THERE ARE NO
comes to the ecology.
TRUE: The ecosystem can be of different types
such as seaecosystem, forest ecosystem and pond TRUE
ecosystem.
There are two main componentsof an ecosystem
which are the ________ and the _________ biotic, abiotic
components.
The living components of anecosystem are called
the _________. Some of thesefactors include biotic components
plants, animals,as well as fungi and bacteria.
These biotic components can be further
energy requirement source.
classified, based on the __________
are the three broad categories Producers, consumers, and
of biotic components. decomposers
are the plants in theecosystem, which can
generatetheir own energy requirementthrough p
Producers
hotosynthesis, in thepresence
of sunlight andchlorophyll.
T OR F: All other living things aredependent on
plants for theirenergy requirement of food aswell TRUE
as oxygen.
2
, 3
PRODUCERS
includeherbivores, carnivores, andomnivores. Consumers
The ______ are the livingorganisms that feed
herbivores
onplants.
eat other livingorganisms. Carnivores
are animals that can eat both plant and
Omnivores
animaltissue.
are the fungiand bacteria, which are
Decomposers
thesaprophytes.
They feed on the decayingorganic matter and
convertthis matter into nitrogen andcarbon Decomposers
dioxide.
The _________ play a vitalrole in recycling the
nutrientsso that the producers i.e.plants can use saprophytes
them onceagain.
3
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