Biology · Environmental Studies

Ecosystem Nutrition and Energy Flow

1,235 Questions

Ecosystem nutrition and energy flow questions cover trophic levels, food chains, and biodegradable materials. These concepts frequently appear in general science sections of major competitive exams. Review these questions to build a solid understanding of ecological interactions.

Trophic levels conceptFood chain orderAutotrophic nutritionEnergy assimilationScavengers and decomposers

Ecosystem Nutrition and Energy Flow Questions

Multiple choice biology food: where does it come from? food of animals animal and their eating habit classification of animals on the basis of food

Man is an example of ................... animal.

  1. Herbivorous

  2. Carnivorous

  3. Autotrophic

  4. Omnivorous
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Man is an example of omnivorous animal because Omni means all and vore means eater. An organism which can feed on the plant, as well as the meat of the animal, are called omnivorous.

Man consumes plants (fruit vegetables) and also eat the meat of animals like goat, chicken etc thus man considered as the Omnivorous animal.
So the correct answer is "Omnivorous".

Multiple choice biology sources of food food of animals animal and their eating habit classification of animals on the basis of food

Carnivores are the part of 

  1. First trophic level

  2. Second trophic level

  3. Third trophic level

  4. Both A and B
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

The first torphic level contains the producers which are plants.

The second trophic level contains the primary consumers that are herbivores which can directly eat olantd.
They third trophic level constitutes secondary consumers or Carnivores which are predators and eat other small animals for nutrition.
So the correct answer is 'Third trophic level's.

Multiple choice biology sources of food food of animals animal and their eating habit classification of animals on the basis of food

Herbivores are also known as producers

  1. True

  2. False
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Herbivores depend on plants for their nutrition and are hence known as primary consumers and they cannot synthesize their own food.

Plants are producers as they can synthesize food from extremely basic materials like carbon dioxide, water and sunlight.
Hence the correct answer is 'False'.

Multiple choice adaptations - european woodland and african grassland adapting to a habit plant adaptations adaptations to different ecosystems biology

Which of the following is false?

  1. Quantity of biomass in a trophic level at a particular period is called as standing crop.

  2. The energy content in a trophic level is determined is determined by considering a few individuals of a species in that trophic level.

  3. The succession that occurs in newly cooled lava is called primary succession.

  4. Rate of succession is faster in secondary succession.
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Energy content in a trophic level is determined by the total energy flow through that level, not just by considering a few individuals, which would be statistically insignificant.

Multiple choice adaptations - european woodland and african grassland adapting to a habit plant adaptations adaptations to different ecosystems biology

Primary macro-consumers are herbivores, which feeds on

  1. Animals

  2. Minute floating Plants

  3. Living Plants and plant residue

  4. Decomposers
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Primary macro-consumers, also known as primary consumers or herbivores, feed directly on producers, which are living plants and plant material.

Multiple choice adaptations - european woodland and african grassland adapting to a habit plant adaptations adaptations to different ecosystems biology

In the grasslands, trees do not replace the grasses as part of an ecological succession because of.

  1. Insects and fungi

  2. Limited sunlight and paucity of nutrients

  3. Water limits and fire

  4. Cool temperatures and good soil
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

In grasslands, periodic fires and limited water availability prevent the establishment and growth of woody trees. These environmental filters keep the ecosystem in a subclimax state dominated by grasses rather than progressing to a forest.

Multiple choice adaptations - european woodland and african grassland adapting to a habit plant adaptations adaptations to different ecosystems biology

Which one of the following tropic levels in the food chain has the maximum energy?

  1. Herbivores

  2. Carnivores

  3. Producers

  4. Decomposers
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

According to the 10 percent law of energy transfer in ecosystems, energy decreases at each successive trophic level. Producers, being at the first trophic level, capture solar energy and possess the maximum amount of available energy.

Multiple choice zoology bio-geo chemical cycles in nature nutrient cycles- flow of substances carbon cycle biogeochemical cycles - gaseous

Some of the nutrient cycles are labelled as below. Sulphur
cycle (A), phosphorus cycle (B), carbon cycle (C) and
nitrogen cycle (D)
Of these, the sedimentary cycle is represented by

  1. (A) only

  2. (B) only

  3. (C) only

  4. (A) and (B) only

  5. (C) and (D) only
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Sedimentary cycles involve elements that spend most of their time in the Earth's crust. Both the sulphur and phosphorus cycles are classified as sedimentary cycles, as their main reservoirs are rocks and soil.

Multiple choice evs forests: our lifeline food material and source sources of food and food habits of animals seed dispersal

The function of reservoir pool is to meet with the deficit of nutrient that occurs due to.

  1. Imbalance in rate of efflux and influx of nutrients

  2. Only efflux of nutrients

  3. Ceased nutrient cycle

  4. None of these
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

The function of the reservoir is to meet the deficit which occurs due to meet the deficit which occurs due to imbalance in the rate of influx and efflux.

So, the correct option is 'Imbalance in rate of efflux and influx of nutrients'.