Question

Give scientific reasons
a. Plants in an ecosystem are called consumers.
b. Large dams destroy ecosystem.
c. Rhinos were restored in Dudhwa forest.

Answer 1

Note: Question in part a is wrong as plants are called producers and not consumers.

a. Plants in an ecosystem are called producers because they synthesise their own food by the process of photosynthesis. All the other living organisms are dependant on plants for full filling their nutritional requirements and hence are called consumers.

b. Large dams destroy the ecosystem because the construction of dams across river leads to mass deforestation, which results in the loss of biodiversity. It leads to the widescale loss of flora and fauna of that area.

c. Rhinos had become extinct in the 20th century due to unrelenting hunting in the Dudhwa forest. However, they were again restored by the various measures taken up by the government. They were bred in captivity and then released in their habitats under observation.