- Which of the following is an autotrophic prokaryote?
a) Amoeba
b) Cyanobacteria
c) Fungi
d) Algae
Answer: b) Cyanobacteria
Explanation:
Cyanobacteria, also known as blue-green algae, are prokaryotic organisms that perform photosynthesis and are autotrophic.
- The study of interactions between organisms and their environment is called:
a) Taxonomy
b) Ecology
c) Genetics
d) Cytology
Answer: b) Ecology
Explanation:
Ecology is the branch of biology that studies the relationships between organisms and their environment, including both living and non-living components.
- The kingdom Fungi is characterized by all of the following EXCEPT:
a) Heterotrophic nutrition
b) Presence of a cell wall made of chitin
c) Multicellular organisms only
d) Reproduction by spores
Answer: c) Multicellular organisms only
Explanation:
Fungi can be both multicellular (e.g., mushrooms) and unicellular (e.g., yeast), but they are heterotrophic and reproduce via spores.
- Which of the following kingdoms includes organisms with a true nucleus but lacks multicellular forms?
a) Plantae
b) Protista
c) Animalia
d) Monera
Answer: b) Protista
Explanation:
The kingdom Protista includes unicellular eukaryotic organisms, meaning they have a true nucleus, but they do not form multicellular structures.
- Which of the following is a feature of prokaryotic cells?
a) Presence of membrane-bound organelles
b) DNA present in a well-defined nucleus
c) Absence of a true nucleus
d) Multicellularity
Answer: c) Absence of a true nucleus
Explanation:
Prokaryotic cells, such as those found in bacteria, lack a well-defined nucleus and membrane-bound organelles. Their DNA is located in a region called the nucleoid.
- Which of the following is an example of a multicellular organism that belongs to the kingdom Protista?
a) Paramecium
b) Volvox
c) Fungi
d) Amoeba
Answer: b) Volvox
Explanation:
Volvox is a colonial protist, meaning it is a group of individual cells that function together, giving it a multicellular appearance.
- Which of the following is a correct match of kingdom and characteristic?
a) Monera – Eukaryotic
b) Protista – Prokaryotic
c) Fungi – Heterotrophic
d) Animalia – Autotrophic
Answer: c) Fungi – Heterotrophic
Explanation:
Fungi are heterotrophic organisms that obtain their nutrition by absorbing organic matter. The other matches are incorrect.
- Which of the following criteria is used for grouping organisms into kingdoms in the five-kingdom classification?
a) Mode of nutrition
b) Complexity of body organization
c) Cellular structure (prokaryotic or eukaryotic)
d) All of the above
Answer: d) All of the above
Explanation:
The five-kingdom classification system groups organisms based on their mode of nutrition, complexity of body organization, and cellular structure (prokaryotic or eukaryotic).
- The term “species” is best defined as a group of organisms that:
a) Are physically similar
b) Are genetically identical
c) Can interbreed and produce fertile offspring
d) Live in the same habitat
Answer: c) Can interbreed and produce fertile offspring
Explanation:
A species is a group of organisms that can interbreed and produce fertile offspring. This is the most widely accepted definition in biology.
- Which of the following is true for all organisms in kingdom Animalia?
a) They are autotrophic
b) They have a cell wall
c) They are multicellular
d) They can photosynthesize
Answer: c) They are multicellular
Explanation:
All organisms in the kingdom Animalia are multicellular and heterotrophic, meaning they must obtain their food from other organisms.
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