Tag: ecosystem

Questions Related to ecosystem

Phytoplankton are dominant in

zoology adaptations to different ecosystems adaptations to aquatic habitat different ecosystem ecosystem

  1. Limnetic zone

  2. Profundal zone

  3. Littoral zone

  4. Benthic zone

Show answer
Correct Option: A
Explanation:
Phytoplanktons are microscopic floating organisms present in the first exposed layer of water, this zone has abundance of light
So, the correct answer is 'Limnetic zone'

The zone at the edge of a lake or ocean which is alternatively exposed to air and immersed in water is called.

zoology adaptations to different ecosystems adaptations to aquatic habitat different ecosystem ecosystem

  1. Pelagic zone

  2. Benthic zone

  3. Lentic zone

  4. Littoral zone

Show answer
Correct Option: D
Explanation:

Littoral zone is the shallow coastal zone. Light is available upto bottom in this zone. Therefore, producers are found throughout from surface to bottom in this zone. Rooted vegetation occurs along shores. Consumers are also available throughout, i.e., from surface to the bottom in this zone.

Bottom dwellers, where no light occurs is found in

zoology adaptations to different ecosystems adaptations to aquatic habitat different ecosystem ecosystem

  1. Benthic zone

  2. Abyssal zone

  3. Pelagic zone

  4. Lotic zone

  5. All of the above

Show answer
Correct Option: B
Explanation:

The abyssal zone is the abyssopelagic layer or pelagic zone, that contains the very deep benthic communities near the bottom of oceans. The benthic zone begins from shore to continental shelf. The deep sea floor is called as the abyssal plain.

Increased surface UV leads to increased __________ ozone

zoology adaptations to different ecosystems adaptations to aquatic habitat different ecosystem ecosystem

  1. tropospheric

  2. stratospheric

  3. lonospheric

  4. exospheric

Show answer
Correct Option: A

Organisms belonging to benthos of a lake are

zoology adaptations to different ecosystems adaptations to aquatic habitat different ecosystem ecosystem

  1. Germs and beetles

  2. Chronomid larvae and red annelids

  3. Daphnia and notonecta

  4. Ranatra and copepods

Show answer
Correct Option: B
Explanation:

Benthos is the community of organisms that live in or near the seabed. This zone is called as the benthic zone. Chronomid larvae, phantom larva, clams, red annelids are some organisms that belongs to benthose of a lake.

Thus, the correct answer is option 'Chronomid larvae and red annelids.'

Benthic organisms are affected most by

zoology adaptations to different ecosystems adaptations to aquatic habitat different ecosystem ecosystem

  1. Surface turbulance of water

  2. Sediment characteristics of aquatic ecosystems

  3. Water holding capacity of soil

  4. Light reaching the forest floor

Show answer
Correct Option: B

The ecosystem services include.

botany ecological adaptations, succession and ecological services ecosystem services ecosystems ecosystem

  1. Maintenance of biodiversity

  2. Pollination of crop

  3. Spiritual, cultural and aesthetic values

  4. All of these

Show answer
Correct Option: D
Explanation:

  • The ecosystem services include 
  • provisioning services such as food and water;
  • regulating services such as regulation of floods, drought, land degradation, and disease; 
  • supporting services such as soil formation and nutrient cycling;
  • and cultural services such as recreational, spiritual, religious and other non-material benefits.
So, the correct option is 'All of these'

Who confirmed communities with more species tend to be more stable than those with less species?

botany ecological adaptations, succession and ecological services ecosystem services ecosystems ecosystem

  1. Alexander von Humboldt

  2. David Tilman

  3. Paul Ehrlich

  4. Edward Wilson

Show answer
Correct Option: B
Explanation:

Ecologists believe that the communities with more species tend to be more stable than those with less species.

Keystone species deserve protection because these 

botany ecological adaptations, succession and ecological services ecosystem services ecosystems ecosystem

  1. are capable of surviving in harsh environmental conditions

  2. indicate presence of certain minerals in the soil

  3. have become rare due to overexploitation

  4. play an important role in supporting other species.

Show answer
Correct Option: D
Explanation:

Keystone species are those species which have significant and disproportionately large influence on the community structure and characteristic. It has often considered low abundance and biomass as compared to dominant species.

When two similar species live in the same area, they may evolve to become more different in order to ________________.

botany ecological adaptations, succession and ecological services ecosystem services ecosystems ecosystem

  1. drive the other species to extinction

  2. reduce competition

  3. use up the other species resources

  4. reduce genetic variation

Show answer
Correct Option: B
Explanation:

According to the mechanism of resource partitioning (supported by Mac Arthur), if two species compete for the same resource, they could avoid competition by choosing, for instance, different times for feeding or different foraging patterns. Two species evolve to become different too reduce competition, so that species can co-exist.