- The scientific name of an organism consists of:
a) Family and species
b) Genus and species
c) Class and genus
d) Phylum and species
Answer: b) Genus and species
Explanation:
According to the binomial nomenclature system, an organism’s scientific name is made up of its genus and species, such as Panthera tigris for the tiger.
- Which of the following is an example of a prokaryote?
a) Fungi
b) Protozoa
c) Bacteria
d) Algae
Answer: c) Bacteria
Explanation:
Prokaryotes are organisms without a nucleus. Bacteria are an example, while fungi, protozoa, and algae are eukaryotes.
- Which of the following levels of classification has the greatest number of species?
a) Genus
b) Family
c) Order
d) Kingdom
Answer: d) Kingdom
Explanation:
Kingdom is the highest taxonomic rank and includes the most species. It is a broad category that groups together many different organisms.
- Which of the following is true for viruses?
a) They are considered living organisms
b) They contain both DNA and RNA
c) They are non-living outside a host but living inside
d) They can replicate independently of a host cell
Answer: c) They are non-living outside a host but living inside
Explanation:
Viruses are considered non-living entities outside a host as they cannot replicate on their own. Inside a host, they exhibit some characteristics of living organisms.
- Which of the following is an example of a multicellular organism?
a) Bacteria
b) Amoeba
c) Fungi
d) Algae
Answer: c) Fungi
Explanation:
Fungi like mushrooms are multicellular organisms. Bacteria and amoeba are unicellular.
- Living organisms can be distinguished from non-living things based on which of the following?
a) Growth from inside
b) Sensitivity
c) Ability to reproduce
d) All of the above
Answer: d) All of the above
Explanation:
Living organisms show growth from within, are sensitive to stimuli, and have the ability to reproduce. These features distinguish them from non-living things.
- A group of interbreeding individuals that are reproductively isolated from other such groups is called a:
a) Family
b) Genus
c) Species
d) Population
Answer: c) Species
Explanation:
A species is a group of organisms that can interbreed and produce fertile offspring. They are reproductively isolated from other groups.
- Which taxonomic rank comes after class?
a) Phylum
b) Order
c) Family
d) Genus
Answer: b) Order
Explanation:
The hierarchy of classification goes from class to order, then family, genus, and species.
- Which of the following is a feature of prokaryotic cells but not eukaryotic cells?
a) Presence of a nucleus
b) Circular DNA without histones
c) Membrane-bound organelles
d) Large size
Answer: b) Circular DNA without histones
Explanation:
Prokaryotic cells, such as bacteria, contain circular DNA that is not wrapped around histones. They lack a true nucleus and membrane-bound organelles.
- Which of the following kingdoms includes unicellular organisms with a nucleus?
a) Monera
b) Protista
c) Fungi
d) Plantae
Answer: b) Protista
Explanation:
Protists are unicellular eukaryotes, meaning they have a nucleus. The kingdom Monera consists of prokaryotes, while Fungi and Plantae are primarily multicellular.
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