TN TET · Environmental Studies (Paper I)
Plants, animals, birds, weather, climate and natural phenomena.
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Q1 · Our Environment · EASY
A farmer observes that his paddy crop grows well during the monsoon season but the same crop fails when he tries to grow it in winter without irrigation. Which factor of the environment is primarily responsible for this difference?
Q2 · Our Environment · MEDIUM
In a pond ecosystem, green algae produce food using sunlight, small fish eat the algae, and bigger fish eat the small fish. If all the algae in the pond die due to pollution, what will most likely happen to the fish population?
Q3 · Our Environment · MEDIUM
During summer in Tamil Nadu, many birds migrate to cooler regions, while in winter, some birds from northern regions visit Tamil Nadu. What is the main reason for this seasonal bird migration?
Q4 · Our Environment · MEDIUM
A teacher wants to demonstrate to students how clouds are formed. She boils water in a container and holds a cold plate above the steam. Water droplets form on the plate. Which natural phenomenon does this experiment best explain?
Q5 · Our Environment · HARD
In a classroom activity, students observed that a potted plant kept in a dark cupboard for one week became pale yellow, while an identical plant kept near the window remained green. To verify that sunlight is essential for the green colour, which additional step would provide the strongest evidence?