- Which of the following is NOT a feature of all living organisms?
a) Homeostasis
b) Reproduction
c) Response to stimuli
d) Photosynthesis
Answer: d) Photosynthesis
Explanation:
While many organisms, especially plants, perform photosynthesis, not all living organisms exhibit this feature. Homeostasis, reproduction, and response to stimuli are universal characteristics of living beings.
- The branch of biology that deals with the identification, naming, and classification of organisms is:
a) Ecology
b) Genetics
c) Taxonomy
d) Morphology
Answer: c) Taxonomy
Explanation:
Taxonomy is concerned with classifying organisms into categories like species, genus, and family based on shared characteristics. It involves identification and naming using binomial nomenclature.
- Linnaeus is known for which of the following contributions?
a) Evolutionary theory
b) Law of inheritance
c) Binomial nomenclature
d) Theory of natural selection
Answer: c) Binomial nomenclature
Explanation:
Carl Linnaeus introduced the binomial nomenclature system, which gives each species a unique two-part name consisting of the genus and species.
- Which of the following criteria is not used for the classification of organisms?
a) Habitat
b) Morphology
c) Genetic makeup
d) Evolutionary relationships
Answer: a) Habitat
Explanation:
Classification in taxonomy is primarily based on morphology, genetics, and evolutionary history, not habitat. Habitat may vary even within a species.
- Which of the following statements is incorrect about species?
a) They are the basic units of classification
b) Members of a species can interbreed and produce fertile offspring
c) Species are groups of organisms with similar traits
d) All species have the same genetic makeup
Answer: d) All species have the same genetic makeup
Explanation:
While species members are genetically similar, they do not have identical genetic makeup. There is variation within species that is the basis of evolution.
- The primary basis of biological classification is:
a) Color and size of organisms
b) Ability to fly or swim
c) Evolutionary relationships
d) Habitat
Answer: c) Evolutionary relationships
Explanation:
Modern taxonomy is based on evolutionary relationships, which help group organisms that share a common ancestor.
- Which term refers to the process by which living organisms maintain a stable internal environment?
a) Growth
b) Homeostasis
c) Evolution
d) Reproduction
Answer: b) Homeostasis
Explanation:
Homeostasis is the ability of organisms to maintain a stable internal environment despite external changes, such as temperature or pH levels.
- Binomial nomenclature means:
a) Two names for one organism
b) Use of common names and scientific names
c) Describing species based on habitat
d) Naming organisms in Latin and Greek
Answer: a) Two names for one organism
Explanation:
In binomial nomenclature, each species is given two names: the genus name and the species name, like Homo sapiens for humans.
- Which of the following is the smallest taxonomic group?
a) Genus
b) Species
c) Family
d) Order
Answer: b) Species
Explanation:
Species is the smallest taxonomic group in the hierarchy. It represents a group of organisms that can interbreed and produce fertile offspring.
- Which of the following is an example of a taxon?
a) Eukaryotic cells
b) Primates
c) Habitat
d) Mitochondria
Answer: b) Primates
Explanation:
A taxon is a group of organisms classified at any rank, such as species, genus, or order. Primates is an order that includes humans, apes, and monkeys.
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