Test Preparation on Ecosystem – I Biology Test Series for NEET - 2020
Which one of the following types of organisms occupy more
than one trophic level in a pond ecosystem
Consider the following statements concerning food chains
A. Removal of 80% tigers from a area resulted in greatly
increased growth of vegetation
B. Removal of most of the carnivores resulted in an
increased population of deers
C. The length of food chains is generally limited to 3-4
trophic levels due to energy loss
D. The length of food chains may vary from 2 to 8
throphic levels
Which two of the above statements are correct
In an aquatic ecosystem, the trophic level equivalent to cows
in grassland is
Benthic organism are affected most by
(c) The sediment characteristics often determine the type of
benthic animals that can thrive there.
Energy and nutrients enter a community by
(b) Producers are mainly photosynthetic plants, and they
can convert light energy to kinetic energy and this
energy passes in all trophic levels.
The bacteria that attack dead organic matter are
(b) Decomposers are usually bacterium or fungus that
breaks down dead organic matter (cells of dead plants
and animals) into simple substances.
An ecosystem which can be easily damaged but can recover
after some time if damaging effect stops will be having
A man-made ecosystem is
(a) Man-made ecosystem or artificial ecosystem have low
diversity and is more vulnerable to sudden changes.
Crop ecosystems are man made ecosystems.
Which of the following supports a dense population of
plankton and littoral vegetation
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