Ecosystem Ques 61
61. Which one of the following types of organisms occupy more than one trophic level in a pond ecosystem?
[2009]
(a) Fish are aquatic animals that live exclusively in water and use gills to extract oxygen from water. They are classified as vertebrates and include a wide variety of species such as salmon, tuna, and goldfish.
(b) Zooplankton
(c) Frog
(d) Phytoplankton are microscopic organisms that live in water and perform photosynthesis.
Show Answer
Answer : a
Hints & Solutions
(a) A pond ecosystem is a delicate balance of fish, plants and other animals. Fish occupy more than one trophic level in pond ecosystem. Small fishes act as secondary consumers. They feed on primary consumers. Large fishes act as tertiary consumers. They feed on smaller fish.
BETA
