Biology Questions and Answers
Food Chains and
Trophic Pyramids
- What is the primary energy
source for life on earth?
The primary eearth is the sun. nergy source The sun plays thfor life one
important role of keeping the planet
warmed and it is the source of theluminous energy used in
photosynthesis. This energy is
converted into organic materialphotosynthetic autotrophic beings an by thed (^)
consumed by the other living beings.
- What is the main means by
which autotrophic beings
obtain energy?
The main mobtain energy is peans by hotosynthwhich autotropesis. (Therehs (^)
are also chemosynthetic autotrophs.)
- Which is the autotrophic
group responsible for the
production of most part of the
molecular oxygen of earth?
Algae and cyanobacteria of the
phytoplacontribute nkton armost to the production e the organisms thatof
molecular oxygen.
- In the ecological study of
food interactions, what are
the autotrophic beings called?
In Ecology autotroproducers because phic beings are callethey synthesize thed
organic material coliving beings of an ecosystem.nsumed by the other
An ecosystem cannproducers. ot exist without - How are the heterotrophic
beings divided in the
ecological study of food
interactions?
Heterotrophs arconsumers and decomposers. Ae divided into (^) n
ecosystem can exist without consumers
but it canndecomposers. Withot be sustaineout the decomposersd without (^)
the organic material would accumulate
causing environmlater death of the living bental degradation aeings. nd
- What is a food chain?
The food chain is the linear not
branched sequence in being serves as food for another,which a living
starting with the producers and going
up to the decomposers.
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