1.
Odvajanjem razvojnih linija čovekovih davnih predaka od razvoja čovekolikih majmuna započinje ........ evolucija čoveka
Explanation
The given statement suggests that the separation of the evolutionary lines of human ancestors from the development of ape-like primates marks the beginning of human evolution. The word "biološka" in the answer indicates that this evolution is biological in nature, implying that it involves changes and adaptations in the biological characteristics and traits of human ancestors over time.
2.
Prva živa bića na Zemlji pojavila su se pre .......... godina.
Explanation
The correct answer is 3,5 milijardi. This answer states that the first living beings appeared on Earth 3.5 billion years ago.
3.
Osnovni životni uslovi su: voda, vazduh, ................., temperatura i zemljište
Explanation
The missing word in the sentence is "svetlost" which means "light" in English. The sentence is listing the basic life conditions which include water, air, light, temperature, and soil. Light is an essential factor for the survival of many organisms as it is necessary for photosynthesis, the process by which plants convert light energy into chemical energy to sustain themselves. Therefore, including light as one of the basic life conditions makes sense in this context.
4.
U celom sunčevom sistemu samo na Zemlji i Marsu postoje uslovi za život
Correct Answer
B. Netačno
Explanation
The statement is incorrect because it states that conditions for life exist only on Earth and Mars in the entire solar system. This is not true as there is evidence of potential for life on other celestial bodies, such as the moons Europa and Enceladus, which have subsurface oceans that could potentially support life. Additionally, there is ongoing research and exploration to find signs of life on other planets and moons within our solar system and beyond. Therefore, the statement is false.
5.
Oko 71% Zemljine površine prekriveno je vodom.
Correct Answer
A. Tačno
Explanation
The statement "Oko 71% Zemljine površine prekriveno je vodom" translates to "Approximately 71% of the Earth's surface is covered by water." This statement is true and supported by scientific evidence. The Earth's surface is predominantly covered by oceans, seas, lakes, and rivers, which account for about 71% of its total area.
6.
U sastavu vazduha nalazi se azot, gas koji biljke koriet u procesu fotosinteze za stvaranje hrane, ali i kiseonika.
Correct Answer
B. Netačno
Explanation
The statement is incorrect. The correct answer is false. The composition of air consists of nitrogen, which plants use in the process of photosynthesis to create food, but not oxygen.
7.
Što je veći broj različitih vrsta na određenom staništu, to je veći biodiverzitet tog područja.
Correct Answer
A. Tačno
Explanation
The statement is true because the greater the number of different species in a particular habitat, the higher the biodiversity of that area. Biodiversity refers to the variety of life forms found in an ecosystem, including plants, animals, and microorganisms. A higher biodiversity indicates a healthier and more balanced ecosystem, as different species play important roles in maintaining ecological processes such as nutrient cycling, pollination, and pest control. Therefore, having a greater number of different species in an area signifies a higher level of biodiversity.
8.
Dopuni niz.
carstvo monera, carstvo ........, carstvo biljaka, carstvo životinja, carstvo gljiva
Correct Answer
protista
Explanation
The given question asks to complete the series of kingdoms. The series starts with "carstvo monera" (kingdom Monera) and is followed by "carstvo biljaka" (kingdom Plantae) and "carstvo životinja" (kingdom Animalia). The missing term is "carstvo gljiva" (kingdom Fungi). Therefore, the correct answer to complete the series is "protista" (kingdom Protista).
9.
Jedinke iste vrste koje žive na istom staništu i međusobno mogu da se razmnožavaju nazivaju se:
Correct Answer
D. Populacija
Explanation
Jedinke iste vrste koje žive na istom staništu i međusobno mogu da se razmnožavaju nazivaju se populacija.
10.
Ekološku organizaciju ne karakterišu procesi:
Correct Answer
B. Pripitomljavanja životinja
Explanation
Ekološke organizacije se bave zaštitom i očuvanjem prirode i životne sredine. Procesi ishrane, protoka energije i kruženja materije su prirodni procesi koji se odvijaju u ekosistemima i koji su važni za održavanje ravnoteže u prirodi. Međutim, pripitomljavanje životinja se odnosi na proces u kojem divlje životinje postaju prilagođene za život uz ljude, što može imati negativne posledice na prirodu i ekosisteme. Stoga, ekološke organizacije se ne bave pripitomljavanjem životinja jer to nije u skladu sa njihovim ciljevima očuvanja prirode.
11.
Biološka raznovrsnost ili ............. podrazumeva raznolikost živog sveta na Zemlji.
Correct Answer
biodiverzitet
Explanation
The correct answer is "biodiverzitet". Biodiverzitet refers to the variety of life forms on Earth. It encompasses the diversity of species, ecosystems, and genetic variations within species. Biodiversity is important for maintaining the balance of ecosystems, as each species plays a specific role in the functioning of the ecosystem. It also provides numerous benefits to humans, including food, medicine, and ecosystem services.
12.
Većini živih bića disanje omogućava gas ................
Correct Answer
kiseonik
Explanation
The majority of living beings require oxygen for respiration, which is the process of obtaining energy from food. Oxygen is essential for cellular respiration, where it is used to break down glucose and produce ATP, the main energy currency of cells. Without oxygen, most organisms would not be able to survive as they would not be able to generate enough energy to carry out their life processes. Therefore, the correct answer is "kiseonik" (oxygen).
13.
Celokupni prostor na Zemlji, koji naseljavaju živa bića, naziva se ..............
Correct Answer
biosfera
Explanation
The correct answer is "biosfera." Biosfera refers to the entire space on Earth that is inhabited by living organisms. It encompasses all ecosystems, including land, water, and the atmosphere, where life exists. This term is commonly used in the field of ecology to describe the interconnectedness and interdependence of all living things on Earth.
14.
Dopuni niz pojmom koji nedostaje
molekuli, organele, ćelije, ......................, organi, sistemi organa, organizam
Correct Answer
tkiva
Explanation
The missing term in the given series is "tkiva". The series represents a hierarchy of biological organization, starting from molecules, then progressing to organelles, cells, and tissues. After tissues, the next level of organization would be organs, followed by organ systems, and finally, the whole organism. Therefore, "tkiva" fits logically as the missing term in the series.
15.
Organizmi unutar biocenoze međusobno su povezani:
Correct Answer
A. Ishranom
Explanation
Organizmi unutar biocenoze su međusobno povezani ishranom. Ova veza se ostvaruje kroz lanac ishrane, gdje jedan organizam konzumira drugi organizam radi dobivanja energije i hranjivih tvari. Ovaj proces omogućava prijenos energije i hranjivih tvari između različitih organizama u biocenozi, stvarajući tako međuovisnost među njima. Ishrana je ključna za održavanje ravnoteže u biocenozi i osigurava preživljavanje svih organizama unutar nje.
16.
Biodiverzitet vrsta vidljiv je u brojnosti različitih vrsta i smatra se da je do danas opisano oko:
Correct Answer
C. 1,8 miliona različitih vrsta organizama
Explanation
The correct answer is 1.8 million different species of organisms. This is because biodiversity refers to the variety of different species present in an ecosystem, and it is estimated that approximately 1.8 million species have been described and identified so far.