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By Savita S. More

Maharashtra Board Class 8 Ecosystems

Maharashtra Board Class 8 Ecosystems, This page includes Fill in the Blanks, TB Q/A, as well as Extra Questions and Answers from the chapter.

Complete the following by using correct option.

  1. Air, water, minerals, soil are……………factors of an ecosystem.( organic)
  2. River, ponds, ocean are ……………ecosystems.( aquatic)
  3. Man is ……. in an ecosystem.( consumer)

 

Match the following

Producers Ecosystem

  1. Cactus 1. Forest
  2. Aquatic plants 2. Creek
  3. Mangroves 3. Aquatic
  4. Pine 4. Desert

Match the following:

Producers Ecosystem
a. Cactus 4. Desert
b. Aquatic plants 3. Aquatic
c. Mangroves 2. Creek
d. Pine 1. Forest

 

Define terms

  1. Ecosystem: The structure formed by the interaction of living (biotic) and non-living (abiotic) factors in a specific environment. It includes the community of organisms and the physical environment they inhabit.
  2. Biome: A large geographic biotic unit, a major ecological community of plants and animals with similar life forms and environmental conditions.
  3. Food web: A complex network of interconnected food chains in an ecosystem, showing the flow of energy through various organisms.

Give scientific reasons

Plants in an ecosystem are called consumers.

Plants in an ecosystem are actually called producers because they can produce their own food through photosynthesis, using sunlight to convert carbon dioxide and water into carbohydrates.

 

Large dams destroy ecosystems.

Large dam construction causes massive deforestation, disrupting natural habitats and causing extinction of various species. The stored water column puts pressure on the ground, potentially causing earthquakes. Human settlements are being displaced due to houses and fields being submerged. In short, large dams result in significant ecological damage, including deforestation, habitat loss, species extinction, seismic risk, and human displacement.

 

Rhinos were restored in Dudhwa forest.

One-horned rhinoceros lived in the forests of Dudhwa long ago. However, the rhinoceros was almost extinct due to poaching and hunting. To revive it, attempts were made to breed it in captivity and release the young into natural homes. These efforts were made because it is important to save valuable wildlife.

 

What are the effects of increased population (of human beings) on ecosystems?

The human population grows much more than that of other animals.

Also, they are the largest consumers in an ecosystem. Like any living organism, man’s ecosystem provides him with all his basic needs.

However, due to large population man wants too much. Human beings use only natural resources.

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