Biology
Grade-7
Easy
Question
Match the following.
- 1-b, 2- a, 3-c
- 1-b, 2-c, 3-a
- 1-c, 2-b, 3-a
- 1-a, 2-b, 3-c
Hint:
1-b, 2-c, 3-a
The correct answer is: 1-b, 2-c, 3-a
A keystone species is an organism that helps define an entire ecosystem. These species play a crucial role in the formation and development of a community.
Sea stars are important members of the marine environmental considered a keystone species as they prey on animals that have no other natural Predator.
Decrease in temperature and greater seasonal variations are the cause of species diversity in poles. Poles are community with very little species diversity.
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The process of community development is known as ____________.
The process of community development is known as ____________.
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Which of the following species play particularly important roles in determining their communities' structure?
Which of the following species play particularly important roles in determining their communities' structure?
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A community's structure can be described by its species richness and species diversity.
A community's structure can be described by its species richness and species diversity.
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The populations of distinct species living in similar habitats are termed as ____________.
The populations of distinct species living in similar habitats are termed as ____________.
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Community structure is influenced by many factors, including ___________.
Community structure is influenced by many factors, including ___________.
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Each organisms in a community can be classified into one of several ______ levels based on how it obtains nutrients.
Each organisms in a community can be classified into one of several ______ levels based on how it obtains nutrients.
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___________ communities, also known as merocenoses, are tiny ecological units that are not self-sustaining and depend on interactions with bigger communities to survive.
___________ communities, also known as merocenoses, are tiny ecological units that are not self-sustaining and depend on interactions with bigger communities to survive.
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Pick the odd one out.
Pick the odd one out.
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Match the following.
1. |
a. Community refers to a group of species that interact and coexist in a certain area. |
2. |
b. Community with deciduous trees, coniferous trees, and agricultural products and animals like monarchs and chipmunks. |
3. |