Science Single Award - 4SS0 PearsonEdexcel

Feeding Relationships

Bayani Gaba-gaba

Every organism depends on others for food, and those relationships link together into chains and webs that span entire ecosystems. Energy enters the living world through producers and flows upward through consumers, shrinking at every step.

In this lesson you will learn the names ecologists give to each trophic level, how to read and draw food chains, food webs, and pyramids, and the key reason why energy transfer between levels is so inefficient.

Manufura

  1. Understand the names given to different trophic levels, including producers, primary, secondary and tertiary consumers, and decomposers
  2. Understand the concepts of food chains, food webs, pyramids of number, pyramids of biomass and pyramids of energy transfer
  3. Understand the transfer of substances and energy along a food chain
  4. Understand why only about 10% of energy is transferred from one trophic level to the next

Taswirar tunani

An zana wannan batu don ka ga yadda ra'ayoyi ke hadewa.

Bude taswirar tunani a cikin manhaja

Katunan tunawa

Gwaji mai sauri kan abin da ake jarraba a wannan batu.

Yi atisayen wadannan katuna a cikin manhaja

Takardar Darasi

A field of wheat feeds millions of caterpillars. Those caterpillars feed thousands of birds, and the birds feed a handful of hawks. The numbers shrink at every step because energy is lost along the way. Tracing those losses is one of the most useful things ecology can do - it explains everything from why top predators are rare to why vegetarian diets feed more people per hectare.

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Nazarin Darasi

Barka da kammala darasi akan Feeding Relationships. Yanzu da kuka bincika mahimman ra'ayoyi da ra'ayoyi, lokaci yayi da zaku gwada ilimin ku. Wannan sashe yana ba da ayyuka iri-iri Tambayoyin da aka tsara don ƙarfafa fahimtar ku da kuma taimaka muku auna fahimtar ku game da kayan.

Za ka gamu da haɗe-haɗen nau'ikan tambayoyi, ciki har da tambayoyin zaɓi da yawa, tambayoyin gajeren amsa, da tambayoyin rubutu. Kowace tambaya an ƙirƙira ta da kyau don auna fannoni daban-daban na iliminka da ƙwarewar tunani mai zurfi.

Yi wannan ɓangaren na kimantawa a matsayin wata dama don ƙarfafa fahimtarka kan batun kuma don gano duk wani yanki da kake buƙatar ƙarin karatu. Kada ka yanke ƙauna da duk wani ƙalubale da ka fuskanta; maimakon haka, ka kallesu a matsayin damar haɓaka da ingantawa.

  1. In a food chain, the arrow points: A) From the predator to the prey B) In the direction of energy flow C) From higher to lower trophic levels D) Toward the producer Answer: B
  2. Which trophic level always forms the base of a food chain? A) Primary consumer B) Decomposer C) Producer D) Secondary consumer Answer: C
  3. Which type of pyramid can be inverted? A) Pyramid of energy B) Pyramid of biomass C) Pyramid of numbers D) All three Answer: C
  4. Approximately what percentage of energy is transferred from one trophic level to the next? A) 1% B) 10% C) 50% D) 90% Answer: B
  5. Most energy is lost between trophic levels through: A) Photosynthesis B) Excretion only C) Respiration D) Growth Answer: C

Yi aikin wadannan tambayoyi a cikin manhaja

Yi aikin wadannan tambayoyi a cikin manhaja

Yi Aikin Tambayoyin Gwaji

Kana son yin aikin tambayoyin gwaji kan Feeding Relationships? Sauke manhajar Green Bridge CBT don samun tambayoyin gwaji da cikakkun jarrabawa akan wannan batu.

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