Ecosystems and Cycles

Choose a study mode

Play Quiz
Study Flashcards
Spaced Repetition
Chat to Lesson

Podcast

Play an AI-generated podcast conversation about this lesson
Download our mobile app to listen on the go
Get App

Questions and Answers

What is the primary factor that determines the nature of an ecosystem?

  • Climatic conditions such as sunlight, temperature, and rainfall (correct)
  • The presence of specific plant species
  • The type of soil in the region
  • Geographical features such as hills, mountains, and rivers

Which cycle is not a part of the energy flow in the ecosystem?

  • The Water cycle
  • The Nitrogen cycle (correct)
  • The Oxygen cycle
  • The Carbon cycle

What is the primary role of decomposers in an ecosystem?

  • To produce energy through photosynthesis
  • To regulate the population size of producers
  • To break down dead organic matter into simpler substances (correct)
  • To consume other organisms for sustenance

Which type of ecosystem is characterized by a specific and recognizable landscape form?

<p>Forest ecosystems (D)</p> Signup and view all the answers

What is the main focus of ecological pyramids?

<p>Energy flow between different trophic levels (D)</p> Signup and view all the answers

Which factor plays a crucial role in defining the structure and functions of an ecosystem?

<p>Climatic conditions such as sunlight and temperature (B)</p> Signup and view all the answers

What are the two major habitat conditions for the Earth’s living organisms?

<p>Terrestrial and aquatic ecosystems (A)</p> Signup and view all the answers

Which of the following is not a biogeographical realm mentioned in the text?

<p>Neotic realm (C)</p> Signup and view all the answers

What is the main characteristic that differentiates ecosystems?

<p>Interaction with non-living environment and each other (D)</p> Signup and view all the answers

Which region forms a major part of the Oriental realm according to the text?

<p>Eurasia (C)</p> Signup and view all the answers

What type of ecosystems are highly fragile according to the text?

<p>Mountain ecosystems (D)</p> Signup and view all the answers

Which level forms biogeographical regions according to the text?

<p>National or state level (B)</p> Signup and view all the answers

What forms the biosphere at a global level according to the text?

<p>The thin skin of the earth on the land, the sea, and the air (C)</p> Signup and view all the answers

Which type of ecosystem is quickly destroyed by human activities according to the text?

<p>Island ecosystems (B)</p> Signup and view all the answers

What is genetic diversity?

<p>The variety of genes within a species (B)</p> Signup and view all the answers

What does in-situ conservation of biodiversity involve?

<p>Conserving species within their natural habitats (B)</p> Signup and view all the answers

Which value of biodiversity refers to the direct use of biological resources for food, medicine, and other products?

<p>Consumptive value (A)</p> Signup and view all the answers

What is the primary characteristic of a mega diversity nation?

<p>High number of endemic species (D)</p> Signup and view all the answers

Which factor poses a threat to biodiversity by leading to the loss of natural habitats?

<p>Habitat loss (B)</p> Signup and view all the answers

What is the main focus of ex-situ conservation of biodiversity?

<p>Conserving species in zoos and botanical gardens (B)</p> Signup and view all the answers

What is genetic diversity?

<p>The differences in genes among the individuals of a species (D)</p> Signup and view all the answers

Why is genetic variability essential for a healthy breeding population of a species?

<p>To ensure the survival of the gene pool (C)</p> Signup and view all the answers

What is the primary role of modern biotechnology in relation to genetic diversity?

<p>Manipulating genes to prevent extinction of species (B)</p> Signup and view all the answers

How can the reduction in the number of breeding individuals lead to potential extinction of a species?

<p>It reduces genetic variability and causes in-breeding (C)</p> Signup and view all the answers

What does biodiversity include at different scales in space?

<p>Variety and richness of all plant and animal species (D)</p> Signup and view all the answers

What is the main consequence of using wild relatives of crop plants to create new varieties of more productive crops?

<p>Reduction in genetic diversity (A)</p> Signup and view all the answers

How has science’s understanding of biological diversity contributed to 'development'?

<p>It has improved health care and crop production (A)</p> Signup and view all the answers

What is the negative effect of modern consumerist society on biological resources?

<p>Overexploitation and decline in biological resources (D)</p> Signup and view all the answers

Flashcards are hidden until you start studying

Use Quizgecko on...
Browser
Browser