gamtines atrankos formos Flashcards

1
Q

Stabilizuojancioji -

A

vyksta kai aplinkos salygos kinta labai nedaug. Palaiko pastovius susiformavusius rusies pozymius. (rykliai, krokodilai)

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2
Q

Kryptingoji –

A

vyksta kai keiciasi aplinkos salygos, susiformuoja individu turinciu nauju pozymiu kurie padeda prisitaikyti prie pakitusios aplinkos salygu. (arklys)

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3
Q

Issiskiriancioji –

A

nei vieno tos rusies organizmo grupe neturi pranasumo kovoje del buvio. Tokia situacija susidaro del ivairiu vienos teritorijos salygu. Si atranka neigiamai veikia individus kuriu pozymiai yra tarpiniai.

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4
Q

Augalai ginasi:

A

1. Turi dyglius ir spyglius (kaktusas)
2. Ezius saugo spygliai, o sarvuocius sarvu danga

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5
Q

Mimikrija –

A

isvaizda, judesiais, kvapu megdziojami nuodingi, geliantys ar kitaip pavojingi organizmai, bet pats tokiu savybiu neturi.

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6
Q

Biotine aplinka –

A

visi gyvieji organizmai

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7
Q

Abiotine aplinka

A

individo gyvenamoji terpe (vanduo)

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8
Q

Adaptacija

A

organizmu prisitaikymas prie aplinkos

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9
Q

Slepiamoji spalva -

A

spalva panasi i aplinkos (chameleonas, ziogas, pleksne)

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10
Q

Ispejamoji spalva –

A

organizmai isskiria nuodus ar bjauriai dvokancias chemines medziagas. ( kai kurios varles)

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11
Q

Maskuojasi ir spalva ir kuno rastais –

A

sklaidomoji maskuote (zebrai)

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