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What is true about food webs in the ocean?

Phytoplankton and algae form the bases of aquatic food webs. They are eaten by primary consumers like zooplankton, small fish, and crustaceans. Primary consumers are in turn eaten by fish, small sharks, corals, and baleen whales. Humans consume aquatic life from every section of this food web.

Why is a food web more realistic than a food chain?

Food chains show just a single feeding pattern. Each organism has a single role in the ecosystem. Food chains make it easier to visualize trophic levels, or how energy moves through the ecosystem. This is why webs are considered to be more realistic than simple food chains.

Why food chain and food webs rarely have more than four and five tropic levels?

It is rare to find food chains that have more than four or five links because the loss of energy limits the length of food chains. There are only four links in this chain because significant energy is lost between each successive trophic level.

Why a food chain Cannot have more than four steps?

Energy is passed up a food chain or web from lower to higher trophic levels. This loss of energy explains why there are rarely more than four trophic levels in a food chain or web. Sometimes there may be a fifth trophic level, but usually there’s not enough energy left to support any additional levels.

What is meant by food chain the number of trophic levels in a food chain is limited?

1 Answer. In a food chain, only 10% of the total amount of energy is passed on to the next trophic level from the previous trophic level. As we move higher up in the food chain the amount of energy diminishes to a level at which it cannot sustain any trophic level, thereby limiting the number of trophic levels.

What do you mean by food chain?

Food chain, in ecology, the sequence of transfers of matter and energy in the form of food from organism to organism. Food chains intertwine locally into a food web because most organisms consume more than one type of animal or plant.

What are trophic levels define and draw?

In a food chain, each step representing an organism forms a trophic level. (b) If we kill all the organisms in one trophic level, then the transfer of food (and energy) to the next trophic level will stop due to which the organisms of next trophic level will starve and die or migrate to other areas.

What are two examples of a food chain?

Food Chains on Land

  • Nectar (flowers) – butterflies – small birds – foxes.
  • Dandelions – snail – frog – bird – fox.
  • Dead plants – centipede – robin – raccoon.
  • Decayed plants – worms – birds – eagles.
  • Fruits – tapir – jaguar.
  • Fruits – monkeys – monkey-eating eagle.
  • Grass – antelope – tiger – vulture.
  • Grass – cow – man – maggot.

What are 2 food making processes?

There are two types of autotrophs: photoautotrophs and chemoautotrophs. Photoautotrophs get their energy from sunlight and convert it into usable energy (sugar). This process is called photosynthesis.