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Ecosystem · Question 73

AIPMT 2008MCQEasy📈 Topic in 25% papers+4−1
1

About 70% of total global carbon is found in:

  1. Grasslands
  2. Agroecosystems
  3. Oceans
  4. Forests

Answer

(3) Oceans

Solution

⇒ As per NCERT (carbon cycle), about 71 per cent of the global carbon is found dissolved in the oceans; this oceanic reservoir regulates the amount of carbon dioxide in the atmosphere.

∴ About 70% of the total global carbon is found in the oceans.

Answer: (3)

AIPMT 2008

Keep practising — Ecosystem

2

Which one of the following ecosystem types has the highest annual net primary productivity ?

  1. Temperate evergreen forest
  2. Temperate deciduous forest
  3. Tropical rain forest
  4. Tropical deciduous forest
AIPMT 2007
3

Which one of the following is not used for construction of ecological pyramids ?

  1. Rate of energy flow
  2. Dry weight
  3. Fresh weight
  4. Number of individuals
AIPMT 2006
4

Which of the following is expected to have the highest value (g/m2/yr) in a grassland ecosystem ?

  1. Net production (NP)
  2. Secondary production
  3. Tertiary production
  4. Gross production (GP)
AIPMT 2004
5

Bamboo plant is growing in a far forest then what will be the trophic level of it ?

  1. Second trophic level (T2)
  2. First trophic level (T1)
  3. Fourth trophic level (T4)
  4. Third trophic level (T3)
AIPMT 2002
6

Plant decomposers are:

  1. Protista and Animalia
  2. Animalia and Monera
  3. Monera and fungi
  4. Fungi and plants
AIPMT 2001
7

Which is the reason for highest biomass in aquatic ecosystem?

  1. Benthonic and brown algae
  2. Nanoplankton, blue green algae, green algae
  3. Diatoms
  4. Sea grass and slime moulds
AIPMT 2000

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All NEET Botany chapters
Class 11The Living WorldBiological ClassificationPlant KingdomMorphology of Flowering PlantsAnatomy of Flowering PlantsCell: The Unit of LifeCell Cycle and Cell DivisionTransport in PlantsMineral NutritionPhotosynthesis in Higher PlantsRespiration in PlantsPlant Growth and Development
Class 12Reproduction in OrganismsSexual Reproduction in Flowering PlantsPrinciples of Inheritance and VariationMolecular Basis of InheritanceStrategies for Enhancement in Food ProductionMicrobes in Human WelfareOrganisms and PopulationsEcosystemBiodiversity and ConservationEnvironmental Issues
Other chaptersBiomolecules (Biology)