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Ecology

ECOLOGY ECOSYSTEM BIOME Levels of Ecological OrganisationLevels of Biological OrganisationSpecies InterdependencePopulation InteractionsBiotic Community OrganisationEcosystemEcological AdaptationsAdaptations to the Environment

15 Questions Published
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Questions

Question 1 Multiple Choice (Single Answer)

Root cap is absent in ________.

  1. Lithophytes
  2. Xerophytes
  3. Mesophytes
  4. Hydrophytes
  5. Halophytes
Question 2 Multiple Choice (Single Answer)

Loss of soil nutrients from top layer of soil is referred to ____________.

  1. mulching
  2. leaching
  3. percolation
  4. nutrient cycle
  5. mineral cycling
Question 3 Multiple Choice (Single Answer)

What are oxylophytes?

  1. Plants which grow on rocks.
  2. Plants that grow on sand.
  3. Plants that grow on waste land.
  4. Plants that grow in saline soils.
  5. Plants that grow under acidic conditions.
Question 4 Multiple Choice (Single Answer)

If all the carbon dioxide were withdrawn from the biosphere, which organism would first experience the negative effects?

  1. Primary consumers
  2. Secondary consumers
  3. Producers
  4. Decomposers
  5. Tertiary consumers
Question 5 Multiple Choice (Single Answer)

What are helophytes?

  1. These are amphibious plants
  2. Free floating
  3. Submerged plants
  4. Fixed floating
  5. Plants that grow under salty marshes
Question 6 Multiple Choice (Single Answer)

Myremecophilly is a beneficial association between flowering plants and __________.

  1. bacteria
  2. virus
  3. ants
  4. mycoplasma
  5. prions
Question 7 Multiple Choice (Single Answer)

What will happen, if all the green plants disappear from the earth?

  1. The carnivores will continue to live.
  2. Only the birds and insects will die.
  3. All the animals will die.
  4. Chemosynthetic bacteria will produce food for all.
  5. Decomposers will start acting in a massive way.
Question 8 Multiple Choice (Single Answer)

What are mesophytes?

  1. Plants growing on normal soil and water conditions.
  2. Plants growing as bushy vegetation.
  3. Plants growing in savanna.
  4. Plants growing in cold soil.
  5. Plants growing in sandy soil.
Question 9 Multiple Choice (Single Answer)

Which are the most efficient photosynthetic organisms in a pond ecosystem?

  1. Submerged hydrophytes
  2. Floating plants
  3. Phytoplanktons
  4. Epiphytic algae
  5. Zooplanktons
Question 10 Multiple Choice (Single Answer)

In most food webs green plants are very important because ______________.

  1. most animals eat plants
  2. they contain chlorophyll
  3. they can perform photosynthesis
  4. they provide protection to animals
  5. they consume and remove carbon dioxide
Question 11 Multiple Choice (Single Answer)

Which plants are restricted only to arctic and alpine regions?

  1. Hekistotherms
  2. Microtherms
  3. Mesotherms
  4. Megatherms
  5. Psychrophytes
Question 12 Multiple Choice (Single Answer)

In which type of soil, the yield would be maximum?

  1. Loamy soil
  2. Fine sand
  3. Clayey soil
  4. Gravel
  5. Silt
Question 13 Multiple Choice (Single Answer)

In which kind of ecosystem, the number of primary producers within a fixed area would be the greatest?

  1. Pond ecosystem
  2. Grassland ecosystem
  3. Forest ecosystem
  4. Desert ecosystem
  5. Man-made ecosystem
Question 14 Multiple Choice (Single Answer)

Which of the following options shows Biotic components?

  1. Producers, consumers, decomposers
  2. Consumers only
  3. Producers only
  4. Producers and consumers
  5. Decomposers only
Question 15 Multiple Choice (Single Answer)

Which of the following is a xerophyte?

  1. Brassica
  2. Typha
  3. Capparis
  4. Spartina altemiflora
  5. Hydrilla
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