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Biology CBSE Live product
Class 8 (2025-26)
How nature works in harmony
Revision II - How Nature Works in Harmony
9.
Ecosystems based on formation
Question:
5
m.
Look at the diagram and answer the questions that follow.
An
pond
paddy field
garden
desert
aquarium
forest
park
ocean
is a
man-made ecosystem
naturally ecosystem
It contains
rice plants, soil microbes, and water
trees, animals, decomposers, and microorganisms
fish, algae, and insects
ornamental plants, birds, and small animals
plants, soil, and insects
cacti, snakes, and lizards
phytoplankton, fish, and whales
contains fish, plants, and microorganisms
Other examples are
rainforests, mangroves, and grasslands
grasslands and tundras
wheat fields and vegetable farms
seas and coral reefs
lakes, rivers, and forests
parks and lawns
terrariums and fish tanks
city gardens and theme parks
It can
human assistance for watering, pruning, and fertilization.
sustain itself independently through self-regulating ecological processes.
function independently without human aid.
exist independently by maintaining energy flow among organisms.
human care to sustain balance and cleanliness.
survive on its own through balanced nutrient and energy cycles.
human assistance to maintain oxygen and nutrient balance.
on humans for survival and productivity.
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