1.
What is a biotic factor?
Correct Answer
B. Something in an ecosystem that is living
Explanation
A biotic factor refers to something in an ecosystem that is living. Biotic factors include all living organisms such as plants, animals, fungi, and microorganisms that interact with each other and their environment. These living organisms play a crucial role in shaping the ecosystem through their interactions, feeding relationships, and adaptations. Biotic factors are essential components of an ecosystem and contribute to its overall functioning and biodiversity.
2.
Abiotic factors are living things in an ecosystem.
Correct Answer
B. False
Explanation
The answer is FALSE. Abiotic factors are non-living things in an ecosystem.
3.
Which of these is a biotic factor?
Correct Answer
D. All of these
Explanation
All of these options are biotic factors because they are all living organisms. A tree is a biotic factor because it is a living plant. A crow is a biotic factor because it is a living bird. A crocodile is a biotic factor because it is a living reptile. Therefore, all of these options are examples of biotic factors.
4.
Fungus is an abiotic factor.
Correct Answer
B. False
Explanation
Fungus is actually a biotic factor, not an abiotic factor. Biotic factors refer to living organisms or their products that directly or indirectly affect an ecosystem. Fungus is a living organism that plays a crucial role in the decomposition of organic matter and nutrient recycling in ecosystems. Therefore, it is considered a biotic factor.
5.
Snakes are biotic.
Correct Answer
A. True
Explanation
Snakes are considered biotic because they are living organisms. Biotic factors refer to all living things in an ecosystem, including plants, animals, and microorganisms. Snakes, being a part of the animal kingdom, are living organisms and therefore fall under the category of biotic factors.
6.
Which of these is a biotic factor?
Correct Answer
D. None of these
Explanation
Biotic factors refer to living organisms or the effects that they have on an ecosystem. The options given, such as ocean, mountain, and desert, are abiotic factors as they are non-living components of the environment. Therefore, the correct answer is "None of these" as it indicates that none of the options provided are biotic factors.
7.
Which of these is a biotic factor?
Correct Answer
A. Palm tree
Explanation
The biotic factor among the options is the Palm tree. Biotic factors are living organisms in an ecosystem, and a palm tree is a living plant. The other options, sand and stone, are abiotic factors because they are non-living elements of the environment.
8.
An ABIOTIC factor can kill a BIOTIC factor.
Correct Answer
A. True
Explanation
True. An abiotic factor, which refers to non-living physical and chemical elements in an ecosystem, can indeed have the potential to harm or even kill a biotic factor, which refers to living organisms. For example, extreme abiotic factors such as high levels of radiation, extreme temperatures, or toxic chemicals can be lethal to many forms of life within an ecosystem. In ecological terms, abiotic factors play a crucial role in shaping the survival and distribution of biotic factors within an environment.
9.
Check all CORRECT choices.
Correct Answer(s)
A. ABIOTIC factors are non-living things in an ecosystem.
B. BIOTIC factors are living things in an ecosystem.
E. BIOTIC factors can eat ABIOTIC factors.
Explanation
The correct answer choices are:
- ABIOTIC factors are non-living things in an ecosystem.
- BIOTIC factors are living things in an ecosystem.
- BIOTIC factors can eat ABIOTIC factors.
ABIOTIC factors refer to the non-living components of an ecosystem, such as sunlight, temperature, water, soil, etc. These factors have a significant impact on the biotic (living) components of the ecosystem. BIOTIC factors, on the other hand, include all the living organisms within the ecosystem, such as plants, animals, fungi, bacteria, etc. Lastly, some BIOTIC factors can obtain energy or nutrients from ABIOTIC factors. For example, plants obtain energy from sunlight (an ABIOTIC factor) through the process of photosynthesis.
10.
Which is a BIOTIC factor?
Correct Answer
C. A tree
Explanation
A tree is a biotic factor because it is a living organism that is part of the ecosystem. Biotic factors include all living things such as plants, animals, and microorganisms that interact with each other and their environment. In this case, a tree interacts with other organisms in its ecosystem, such as providing habitat for animals, producing oxygen, and participating in nutrient cycling. The other options, a lake and the air, are abiotic factors as they are non-living components of the environment.