Science Single Award - 4SS0 PearsonEdexcel

Feeding Relationships

Muhtasari

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.

Malengo

  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

Maelezo ya Somo

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.

Inapatikana kwenye programu ya Green Bridge

Pakua programu ya Green Bridge CBT kwenye simu yako au kompyuta yako ili kupata maelezo kamili ya masomo, maswali ya mazoezi, na mengi zaidi.

Maelezo kamili ya masomo yenye michoro
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Tathmini ya Somo

Hongera kwa kukamilisha somo la Feeding Relationships. Sasa kwa kuwa umechunguza dhana na mawazo muhimu, ni wakati wa kuweka ujuzi wako kwa mtihani. Sehemu hii inatoa mazoezi mbalimbali maswali yaliyoundwa ili kuimarisha uelewaji wako na kukusaidia kupima ufahamu wako wa nyenzo.

Utakutana na mchanganyiko wa aina mbalimbali za maswali, ikiwemo maswali ya kuchagua jibu sahihi, maswali ya majibu mafupi, na maswali ya insha. Kila swali limebuniwa kwa umakini ili kupima vipengele tofauti vya maarifa yako na ujuzi wa kufikiri kwa makini.

Tumia sehemu hii ya tathmini kama fursa ya kuimarisha uelewa wako wa mada na kubaini maeneo yoyote ambapo unaweza kuhitaji kusoma zaidi. Usikatishwe tamaa na changamoto zozote utakazokutana nazo; badala yake, zitazame kama fursa za kukua na kuboresha.

  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

Inapatikana kwenye programu ya Green Bridge

Pakua programu ya Green Bridge CBT kwenye simu yako au kompyuta yako ili kupata maelezo kamili ya masomo, maswali ya mazoezi, na mengi zaidi.

Maelezo kamili ya masomo yenye michoro
Msaidizi wa kujifunza wa AI
Soma bila mtandao, wakati wowote, mahali popote
Inapatikana kwa Android, Windows, macOS, na Linux

Inapatikana kwenye programu ya Green Bridge

Pakua programu ya Green Bridge CBT kwenye simu yako au kompyuta yako ili kupata maelezo kamili ya masomo, maswali ya mazoezi, na mengi zaidi.

Maelezo kamili ya masomo yenye michoro
Msaidizi wa kujifunza wa AI
Soma bila mtandao, wakati wowote, mahali popote
Inapatikana kwa Android, Windows, macOS, na Linux

Fanya Mazoezi ya Maswali ya Majaribio

Ungependa kufanya mazoezi ya maswali ya majaribio kuhusu Feeding Relationships? Pakua programu ya Green Bridge CBT ili kupata maswali ya majaribio na tathmini kamili za mazoezi kuhusu mada hii.

Pakua Programu Kwenye Google Playstore

Kila kitu unachohitaji ili kufaulu katika JAMB, WAEC & NECO.

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Msaada Nje ya Mtandao - Jifunze Wakati Wowote, Popote Pale
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