Feeding Relationships
Muhtasari
Every organism needs energy, and that energy flows through an ecosystem from the Sun to producers and onward through consumers. Tracing who eats whom reveals the structure of an entire community and explains why large predators are always rare.
In this lesson you will learn the names of the trophic levels, how food chains and food webs represent feeding relationships, what pyramids of number, biomass and energy tell us, and why roughly 90% of energy is lost at every step along a food chain.
Malengo
- Understand the names given to different trophic levels, including producers, primary, secondary and tertiary consumers and decomposers
- Understand the concepts of food chains, food webs, pyramids of number, pyramids of biomass and pyramids of energy transfer
- Understand the transfer of substances and energy along a food chain
- Understand why only about 10 per cent of energy is transferred from one trophic level to the next
Maelezo ya Somo
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.
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.
- What is the source of energy for almost all food chains? A) Chemical energy in the soil B) Heat from the Earth's core C) Light energy from the Sun D) Kinetic energy from wind Answer: C
- Which trophic level do decomposers belong to? A) First B) Second C) They act at all levels D) Fourth Answer: C
- A pyramid of biomass is always pyramid-shaped because: A) There are always more producers than consumers B) Total dry mass decreases at each trophic level C) Producers are always larger than consumers D) Consumers always eat everything available Answer: B
- Approximately what percentage of energy is transferred from one trophic level to the next? A) 1% B) 10% C) 50% D) 90% Answer: B
- In a food chain, arrows represent: A) The direction an organism moves B) The direction of energy transfer C) The size of the organism D) The number of organisms Answer: B
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.
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.
Vitabu Vinavyopendekezwa
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.
