8. Which of the following can not cycle in an ecosystem. A. Nutrients B. Chemica
ID: 279658 • Letter: 8
Question
8. Which of the following can not cycle in an ecosystem. A. Nutrients B. Chemicals 9. What is the smallest unit of matter? B. A molecule C. Nitrogen D. Energy atom C, A cell D. An electron 10. Which kingdom is composed of multi-cellular, motile consumers? A. Animalia 8. Eukarya C. Protista D. Archaea 11. In which domain are insects? A. Animalia B. Eukarya C. Protista D. Archaea 12. What is an indisputable observation called in science? A. A theory B. A fact C. A hypothesis D. Truth 13. What is biodiversity? A. The number of different species in an area B. The number of populations in a community C. The number of ecosystems in a community D. The number and evenness of populations in an ecosystem 14. Which ecosystem(s) contain the highest biodiversity on Earth? A. Tropical rainforest and coral reef C. Coral reef and tall-grass prairie 8 Tropical reef and tall-grass prairie D. Savannah and shrubland e process whereby a cell or an organism creates more cells or organisms like themselves ogenesis C. Natural selection D. Reproduction B. Genetics ch of the following taxa (taxonomic categories) is the least inclusive? B. Genus C. Class D. Family Phylum 17. What do we call the practice of naming and classifying living things? B. Inheritance C. Genetics A Taxonomy 18. What is adhesion? A. The attraction of water molecules to each other B. The electromagnetic attraction between two ions C. Sharing electrons between two atoms D. The attraction of water molecules to any substance other than water 19. What is an electron shell? A. A place in the nucleus of an atom where you can find electrons B. The outer surface of an electron C. An area outside the nucleus of an atom where you can find electrons B. The part of an electron that carries a chargeExplanation / Answer
8. D
Energy is lost at each trophic level in an ecosystem, so it is not cycled back
9. A
An atom is the smallest unit of matter.
10. A
Motile consumers belong to kingdom animalia.Protists are unicellular. Eukarya and archaea are domains.
11. B
Insects belong to domain eukarya and kingdom animalia.
12. B
A fact is an indisputable observation.
13. A
Number of species in an area represents biodiversity.
14.
15. D
Reproduction is a process by which a cell or an organism creates cells or organisms like themselves.
16. B
The order is Phylum, class, order, family, genus and species. The organisms decrease with each level. Here genus contains less number of organisms as compared to higher levels.
17. A
Taxonomy deals with identification, classification and naming of organisms.
18. D
Adhesion involves attraction of molecules with any other substance.
19. C
Electrons are located in shells outside nucleus.
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