food chain এর চিত্র ফলাফল
Food Chain: A food chain is a linear network of links in a food web starting from producer organisms  and ending at apex predator species or decomposerspecies (such as fungi or bacteria).


Herbivore - an animal that eats plants.

Carnivore - an animal that eats other animals.

Omnivore - an animal that eats both plants and animals eg bears and humans. 
food chain এর চিত্র ফলাফল

Producer - usually a green plant that produces its own food by photosynthesis.

Primary Consumer - Animals that consume only plant matter. They are herbivores - eg rabbits, caterpillars, cows, sheep, and deer.

Secondary Consumer - Animals that eat primary consumers (herbivores).

Tertiary Consumer - Animals that eat secondary consumers ie carnivores that feed on other carnivores.


Predators - kill for food. They are either secondary or tertiary consumers - eg polar bears, golden eagles

Prey - are the organisms that predators feed on. Examples of predator and prey species are: fox and rabbit; blue tit and caterpillar; wolf and lamb.

Scavenger - a consumer that eats dead animals (e.g. crab, crow, vulture, buzzard and hyena.


food chain এর চিত্র ফলাফল
Detritivore - a consumer that obtains its nutrients from detritus.

Decomposer - an organism such as bacteria and fungi that breaks down dead organisms and their wastes. . (They do not 'eat' the food like scavengers, as they have no mouth-parts. Instead they break down solid matter into liquids which they can absorb..Examples: bacteria and some fungi.

Trophic Level - A trophic level is each level in a food chain. Matter is always 'lost' as heat energy at each trophic level. Basal Energy Requirement (B.E.R.) - the amount of energy used by an organism's body just to keep alive, when no food is being digested and no muscular work is being done.

Food Web - a network of interrelated food chains in a given area.

google.com univnotes

Related Posts:

  • The senses of birds Like humans, birds have the senses of sight, hearing, smell, taste, and touch. They use these senses much as we do. Sight Birds depend heavily on the ability to see. Not only is good eyesight needed for flight, it is also… Read More
  • Locomotion of birds Over many thousands of years, birds' front limbs have become specially adapted for flight. The wings, together with the feathers, are what allow a bird to fly. They provide the lift that is needed to get off the ground an… Read More
  • Mouth and Digestive System of birds Mouth and Digestive System Birds do not have teeth. They use their beaks to break up the food they eat. Also, birds lack a soft palate at the back of their mouths. The food is pushed along by the muscles in the esophagus (… Read More
  • Temperature Regulation of birds Birds do not sweat, but they have developed other strategies to stay cool in very warm conditions. Most birds will hold their wings out to cool off. If water is available, they will bathe and cool as the water evaporates.… Read More
  • Skin and Feathers of Birds Birds have a sensitive skin that allows them to feel and sense pressure, heat, and cold. The feathers of a bird grow from the inner layer of skin (the dermis). Feathers provide assistance in flight, insulation from cold, … Read More

0 Comments:

Powered by Blogger.

Visitors

197809
Print Friendly Version of this pagePrint Get a PDF version of this webpagePDF


 download University Notes apps for android

Popular Posts

Flag Counter