Biology · Environmental Studies

Ecosystem Nutrition and Energy Flow

1,093 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 evs digestion of food diseases caused by changes in lifestyle nutrition deficiency diseases study of ecological pyramids

The energy and biomass relationship between the organisms at different trophic levels can better expressed by.

  1. Food chain

  2. Food web

  3. Ecological pyramids

  4. Energy cycle
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation
An ecological pyramid (also trophic pyramid, eltonian pyramid, energy pyramid, or sometimes food pyramid) is a graphical representation designed to show the biomass or bio productivity at each trophic level in a given ecosystem. Biomass pyramids show how much biomass (the amount of living or organic matter present in an organism) is present in the organisms at each trophic level, while productivity pyramids show the procreation or turnover in biomass. There is also pyramid of numbers which represent the number of organisms in each trophic level. They may be upright (e.g. Grassland ecosystem), inverted (parasitic ecosystem) or dumbbell shaped (forest ecosystem). Energy pyramids begin with producers on the bottom (such as plants) and proceed through the various trophic levels (such as herbivores that eat plants, then carnivores that eat flesh, then omnivores that eat both plants and flesh, and so on). The highest level is the top of the food chain.
So the correct option is 'ecological pyramid'.
Multiple choice evs digestion of food diseases caused by changes in lifestyle nutrition deficiency diseases study of ecological pyramids

When peacock eats snakes which eats insects thriving on green plants, the peacock is

  1. A primary consumer

  2. A primary decomposer

  3. Final decomposer

  4. The apex of food pyramid
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

In the given food chain peacock is the ultimate consumer. It will be located at the apex of the food pyramid. 

Green plants will be producers. 
Insects feeding on green plants will be herbivores or primary consumers. Snakes will be primary carnivores or secondary consumers and peacock will be a secondary carnivore or a tertiary consumer. Thus, the correct answer is option D.

Multiple choice evs digestion of food diseases caused by changes in lifestyle nutrition deficiency diseases study of ecological pyramids

In the food and energy pyramid, the sequence-from base upwards is?

  1. Aquatic insects-fishes-flowering plants-trees

  2. Primitive animals-higher animals-man who plants and animals-carnivorous animals

  3. Plants animals that eat plants animals that eat plants and animals-carnivorous animals

  4. Aquatic plants-terrestrial plants carnivorous animals-large trees man
Reveal answer Fill a bubble to check yourself
A Correct answer
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 evs forests: our lifeline food material and source sources of food and food habits of animals seed dispersal

Which is not a characteristic of seral stages?

  1. Simplified food chain

  2. Few and generalised niches

  3. Low net primary productivity(NPP)

  4. Low energy use efficiency
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Seral stages are intermediate stages in ecological succession. They typically feature complex food webs, high net primary productivity, and high energy use efficiency compared to the early pioneer stages.