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Name two types of pollination. (b) Name any one agent of pollination. (c) Give one reason why petals of some flowers are brightly coloured.

Biology

ScanSolve AI Answer

Haya hapa majibu ya maswali yako:

43(b) Matumizi mawili ya maua kwa watu ni:

  • Kupamba mazingira au nyumba.
  • Chanzo cha manukato (perfume).

44(a) Mbali na moshi, mifano mingine miwili au mitatu ya vichafuzi ni:

  • Taka za viwandani
  • Taka za plastiki
  • Maji taka

44(b) Jina maalum linalopewa moshi unaotoka kwenye jenereta ni gesi za kutolea nje (exhaust gases) au hewa chafu.

45.

a) Sifa ya hewa inayoonyeshwa hapo juu ni shinikizo la hewa (air pressure).

b) Sehemu iliyoashiriwa na herufi K inaitwa uso au ardhi.

c) Umuhimu wowote miwili wa kutumia sifa hiyo ya hewa ni:

  • Kusaidia katika kupumua.
  • Kuwezesha ndege kuruka.
  • Kuwezesha kunywa kwa kutumia mrija.

46.

a) Aina mbili za uchavushaji ni:

  • Uchavushaji binafsi (Self-pollination)
  • Uchavushaji mtambuka (Cross-pollination)

b) Wakala yeyote mmoja wa uchavushaji ni:

  • Upepo
  • Wadudu (mfano, nyuki)
  • Ndege

c) Sababu moja kwa nini petali za maua mengine zina rangi angavu ni kuvutia wachavushaji kama vile wadudu na ndege.

47.

a) Michakato miwili ya kimwili inayohusika katika uundaji wa mvua ni:

  • Uvukizi (Evaporation)
  • Ufinyazaji (Condensation)

b) Maana ya maneno yafuatayo:

  • i) Rainfall (Kiwango cha mvua): Hiki ni kiasi cha mvua kinachonyesha katika eneo fulani kwa kipindi maalum.
  • ii) Rain (Mvua): Haya ni matone ya maji yaliyofinyazwa kutoka kwenye mvuke wa maji angani na kuwa mazito kiasi cha kuanguka chini kutokana na mvutano wa ardhi.
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