|
KORDAMINE Linnud 1 1. Kes on lindude eellased? ......................................................................................................................................................... 2. Mida tähendab püsisoojasus? ......................................................................................................................................................... 3. Nimeta kohastumusi, mis võimaldavad linnud lennata! b) kehakatted -.............................................................................................................................. c) skeletis - ................................................................................................................................... d) lihastes - ................................................................................................................................... e) hingamissüsteemis - .............................................................................................................. 4. Kuidas linnud sigivad? ......................................................................................................................................................... 5. Mille poolest erinevad lindude munakestad roomajate munade kestadest? ......................................................................................................................................................... 6. Miks peavad linnud oma mune hauduma? ......................................................................................................................................................... 7. Osal linnuliikidel isas- ja emaslinnu sulestikud on sarnased, teistel jälle väga erinevad. Millest see oleneb? ......................................................................................................................................................... 8. Miks linnud laulavad? ......................................................................................................................................................... 9. Millest oleneb see, kas linnu munad on kaitsevärvi või hoopis eredad ja silmapaistvad? ......................................................................................................................................................... 10. Milline on lindude pulmamängu eesmärk? ......................................................................................................................................................... ......................................................................................................................................................... |