Tag: ecosystem

Quizzes (20) Questions (95)

Questions Related to ecosystem

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

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

  1. Pelagic zone

  2. Benthic zone

  3. Lentic zone

  4. Littoral zone
Reveal answer Fill a bubble to check yourself
D Correct answer
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.

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

Bottom dwellers, where no light occurs is found in

  1. Benthic zone

  2. Abyssal zone

  3. Pelagic zone

  4. Lotic zone

  5. All of the above
Reveal answer Fill a bubble to check yourself
B Correct answer
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.

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

Organisms belonging to benthos of a lake are

  1. Germs and beetles

  2. Chronomid larvae and red annelids

  3. Daphnia and notonecta

  4. Ranatra and copepods
Reveal answer Fill a bubble to check yourself
B Correct answer
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.'

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

Benthic organisms are affected most by

  1. Surface turbulance of water

  2. Sediment characteristics of aquatic ecosystems

  3. Water holding capacity of soil

  4. Light reaching the forest floor
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Benthic organisms live on the bottom of aquatic ecosystems, so their distribution and survival are primarily influenced by the physical and chemical characteristics of the sediment.

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

The ecosystem services include.

  1. Maintenance of biodiversity

  2. Pollination of crop

  3. Spiritual, cultural and aesthetic values

  4. All of these
Reveal answer Fill a bubble to check yourself
D Correct answer
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'

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

Keystone species deserve protection because these 

  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.
Reveal answer Fill a bubble to check yourself
D Correct answer
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.

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

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

  1. drive the other species to extinction

  2. reduce competition

  3. use up the other species resources

  4. reduce genetic variation
Reveal answer Fill a bubble to check yourself
B Correct answer
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.