Excretion
Muhtasari
Every metabolic reaction in your body produces something useful, but many also generate waste that would become toxic if it were allowed to accumulate. Excretion is the process that removes these metabolic waste products and keeps your internal chemistry within safe limits.
This topic covers how carbon dioxide and oxygen arise as waste products of metabolism in plants and how they leave through stomata, as well as the roles of the lungs, kidneys and skin as excretory organs in humans.
Malengo
- Understand the origin of carbon dioxide and oxygen as waste products of metabolism and their loss from the stomata of a leaf
- Know the excretory products of the lungs, kidneys and skin (organs of excretion)
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Maelezo ya Somo
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Tathmini ya Somo
Hongera kwa kukamilisha somo la Excretion. 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.
- Which of the following is an example of excretion? A) Passing faeces B) Exhaling carbon dioxide C) Vomiting food D) Sweating salt from food Answer: B
- Where is urea produced in the body? A) Kidneys B) Lungs C) Liver D) Skin Answer: C
- During the day, the main waste gas released by a plant is: A) Carbon dioxide B) Nitrogen C) Oxygen D) Water vapour Answer: C
- Through which structures do waste gases leave a plant leaf? A) Xylem vessels B) Phloem tubes C) Root hairs D) Stomata Answer: D
- Why is carbon dioxide removal important for the body? A) It makes blood too alkaline B) It dissolves to form acid, lowering blood pH C) It blocks oxygen from entering cells D) It causes dehydration Answer: B
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Vitabu Vinavyopendekezwa
Jifunze zaidi kutoka vyanzo huria
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Sehemu ya kitabu
The Kidneys and Osmoregulatory Organs
Explain how the kidneys serve as the main osmoregulatory organs in mammalian systems
"Biology: The Kidneys and Osmoregulatory Organs" by OpenStax, OpenStax, Rice University, licensed under CC BY 4.0 (https://creativecommons.org/licenses/by/4.0/). Source: https://openstax.org/books/biology/pages/41-2-the-kidneys-and-osmoregulatory-organs. Access for free at https://openstax.org/books/biology/pages/1-introduction
Vimechapishwa na mashirika mengine chini ya leseni huria na vinatajwa kama wanavyoomba. Viungo hufungua tovuti zao.
Fanya Mazoezi ya Maswali ya Majaribio
Ungependa kufanya mazoezi ya maswali ya majaribio kuhusu Excretion? Pakua programu ya Green Bridge CBT ili kupata maswali ya majaribio na tathmini kamili za mazoezi kuhusu mada hii.
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