Balbharati Class 8 General Science Solutions Ecosystems
Welcome to NCTB Solutions. Here with this post we are going to help 8th class students for the Solutions of Balbharati Class 8 General Science Book Chapter 18, Ecosystems. Here students can easily find step by step solutions of all the questions in Ecosystems. Also our Expert Science Teacher’s solved all the problems with easily understandable language with proper guidance so that all the students can understand easily. Here in this post students will get chapter 18 solutions. Here all the Question Answer are based on Balbharati latest syllabus. Here all the question and answer are based on Maharashtra State Board latest syllabus.
Ecosystems Exercise question Solutions :
Question no – (1)
(a) Air, water, minerals, soil are Physical factors of an ecosystem.
(b) River, ponds, ocean are Aquatic ecosystems.
(c) Man is Consumer in an ecosystem.
Question no – (2)
(a) Cactus → (4) Desert
(b) Aquatic plants → (3) Aquatic
(c) Mangroves → (2) Creek
(d) Pine → (1) Forest
Question no – (3)
(a) Ecosystem :
An ecosystem is a community of living organisms interacting as a system with the abiotic factors present in the environment.
(b) Biome :
Biome is an ecosystem in which a large area has the same weather and abiotic condition throughout its area which results in similar types of organisms.
(c) Food web :
A food web is a diagram which shows the feeding relationship between producers, consumers and decomposers of different species.
Question no – (4)
(b) The forest and grassland where the dam is present turns into an aquatic ecosystems and it also stops the water flow in lower area, thus the ecosystem that depends on the flowing water soon gets destroyed.
(c) Rhinos were restored in the Dudhwa forest because of the efforts to select a grassland and forest where water sources were available throughout the year.
Question no – (5)
(a) When an ecosystem sees a surge in population the ecosystem is unable to keep up with the required natural resources and it also generates vast amount of waste. This depletes the health of the ecosystem.
(b) Due to rapid urbanization we humans are destroying more and more of agricultural lands, grasslands, wetlands, marshlands and forest to create space for residential areas. This in turns either changes or damages the ecosystem completely.
(c) The differences between countries and their competition over water, land, mineral resources or economic and political reasons lead to war.
(d) In an ecosystem each and every abiotic factors affects the biotic factors. Abiotic factors like soil, water, air etc, decides biotic factors live survive in it or and how much of them will survive. Every biotic factors affects the abiotic factors as the abiotic factors are often used or excreted by biotic factors.
(e) Difference between evergreen forest and grassland are as follows :
• Evergreen Forest :
It is natural ecosystem where variety of plants, animals and abiotic factors are found.
• Grasslands :
It is an ecosystem in which vast growth of grass can be seen in a large area.
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