Biology Questions and Answers
- What do numeric pyramids
represent?
Numeric pyramids represent the number
of individuals in food chain. each trophic level of a
- In a numeric pyramid to
which trophic level does the
base always refer? What
about the top level?
In a numeric pcorresponds to thyramid the first trophic leve base (^) el,
i.e., to the producers. The top level of
the pyramid corrthe last consumeesponds generally tor order of the food
chain (since the number of individual
decomposers, most omicroorganisms, is too largf theme to be (^)
represented).
- In a numeric pyramid is it
possible for the base to be
smaller than the other levels?
Since the numeric pyramithe quantity of individuals in eachd represents
trophic levtrophic level of the food chaiels with less individualsn, inferior than (^)
the superior For example, a sintrophic levels may egle tree can servxist.e as (^)
food to millions of insects.
- In the short term what will
happen to the levels above
and below a population of
secondary consumers of a
numeric pyramid if a large
number of individuals from
this population dies?
If an intermediate level of a numeric
pyramid hdecreased, i.e., if the number ofas its variable dimension
individuals of that level is reduced, the
number of individuals of the level belowwill increase and the number of
individuals of the level above will be
reduced. That happens because theindividuals of the level below will fac (^) e
less predators and the individuals of the
level above will have less available food.
- What do biomass pyramids
represent?
Biomassthe masses of pyramids rthe individuals thatepresent the sum of
participate in each trophic level of a
food chain. - What is dry mass?
When biomassesthe concept of dry mass are compared often is used. The
dry masswater mass of an individual. T is the total mass less thehe total (^)
mass is also called fresh mass. To use
dry massbecause among living instead of fresh mass is usefulbeings there are
differences related to the proportion of
water within thdifferences can deir body and suchistort the quantitative (^)
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