Biology

Plant Biology and Classification

1,473 Questions

Plant Biology and Classification deals with the taxonomy, evolution, and morphological features of the plant kingdom. This collection offers practice questions on plant groups, taxonomic hierarchies, and specific plant characteristics. The questions are tailored for students preparing for biology competitive exams.

Plant taxonomyPteridophytesAngiospermsPlant morphologyAlgae and bryophytesClassification systems

Plant Biology and Classification Questions

Multiple choice zoology why classification? nomenclature in classification introduction to plant kingdom history of classification nomenclature of animals

Binomial nomenclature consists of two words 

  1. Genus and species

  2. Order and family

  3. Family and genus

  4. Species and variety
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation
  • Binomial Nomenclature proposed by Carl Linnaeus is the method of naming a particular organism by a single standard name known all over the world. 
  • The first word represents the genus while the second component represents specific epithet. 
So, the correct option is 'Genus and species'.
Multiple choice zoology why classification? nomenclature in classification introduction to plant kingdom history of classification nomenclature of animals

Choose the correct answers from the alternatives given.
Binomial system of nomenclature means that every organism has

  1. two names, one scientific and one popular

  2. one name given by two scientists

  3. one scientific name consisting of a generic and a specific epithet

  4. two names, one denoting the .latinised name of the, place and the other of the person, who determined it
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

  • The local name of thousands and thousands of plants and animals varies from place to place.
  • Hence, there is a need to standardize the naming of a living organism such that a particular organism is known by the same name all over the world.
  • And so Binomial Nomenclature was given.
  • The first name denotes the name of the genus and second denotes the Species name.
Hence, the correct answer is 'One scientific name consisting of a generic and a specific epithet.'.

Multiple choice zoology why classification? nomenclature in classification introduction to plant kingdom history of classification nomenclature of animals

Which one of the following is an example of the binomial scientific name?

  1. Green algae

  2. Snow leopard

  3. Rana tigrina

  4. China-rose
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

The binomial name of frog is Rina tigrina. The study of frogs is called batrachology, belonging to class amphibian of Phylum Chordata. The most common species of frog found in India is Rana Tigrina.

So, the correct option is 'Rana tigrina'.

Multiple choice biology biodiversity and classification monera five kingdoms of living organisms biodiversity and need of classification

Prokaryotes are placed in a group known as 

  1. Monera

  2. Pteridophytes

  3. Bryophyta

  4. Angiosperms
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Prokaryotes are placed in a group Monera. These includes bacteria, Cyanobacteria, Eubacteria, etc. They are unicellular organisms. They have cell wall. They lack membrane-bound organelles like mitochondria. They also lack true nucleus. Instead, they have nucleoid, a genetic material without nuclear envelope.

Thus, the correct answer is 'Monera.'

Multiple choice biology biodiversity and classification monera five kingdoms of living organisms biodiversity and need of classification

Organisms which are considered to be the most primitive group in the world are grouped under

  1. Kingdom Monera

  2. Kingdom Protista

  3. Kingdom Fungi

  4. Kingdom Plantae
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

According to the "Five kingdom system of classification" proposed by R. H. Whittaker in 1969, all living organisms are classified under 5 kingdoms. The names and characteristics are explained below.

  1. Kingdom Monera:  Contains unicellular, prokaryotic, organisms like bacterial species. These are the most primitive organisms with no defined or true nucleus and no membrane-bound organelles. 
  2. Kingdom Protista: Contains eukaryotic unicellular organisms like Amoeba. They have true membrane-bound organelles and nucleus.
  3. Kingdom Fungi: Eukaryotic multicellular (exception: yeast is unicellular) non-photosynthetic organisms
  4. Kingdom Plantae:  Eukaryotic multicellular photosynthetic autotrophic organisms
  5. Kingdom Animalia: Eukaryotic multicellular heterotrophic organisms.
Here, only Kingdom Monera is consists of prokaryotic organisms and thus it is considered the most primitive group.

Multiple choice biology biodiversity and classification monera five kingdoms of living organisms biodiversity and need of classification

Which kingdon included nutritioally most diversed group of organisms and has no well defined boundaries?

  1. Monera

  2. Protist

  3. Fungi

  4. Plantae
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Kingdom Monera contains bacteria, which exhibit the most diverse metabolic strategies (autotrophic, heterotrophic, chemoautotrophic) and lack a defined nuclear membrane, making their boundaries less distinct compared to other kingdoms.

Multiple choice biology biodiversity and classification monera five kingdoms of living organisms biodiversity and need of classification

According to Whittaker, one of the following is most primitive evolutionary group

  1. Plantae

  2. Fungi

  3. Protista

  4. Monera
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

R. H. Whittaker proposed the five kingdom classification in which the Monera group is considered as the most primitive group. The kingdom Monera includes organisms such as the archaebacteria, bacteria, cyanobacteria (BGA), and filamentous actinomycetes. These organisms are unicellular or multicellular prokaryotes. There are different forms of primitive organisms which show that the evolution occurred in these organisms much before compared to the organisms of the other group. 

Thus, the correct answer is option D. 

Multiple choice biology biodiversity and classification monera five kingdoms of living organisms biodiversity and need of classification

According to five kingdom system, blue green algae belongs to

  1. Metaphyta

  2. Monera

  3. Protista

  4. Algae
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

The kingdom monera is comprised of the prokaryotic organisms. The blue green algae is included under the kingdom monera. These are primitive form of prokaryotic organisms. They are unicellular or multicellular forming filamentous structures. They do not have well-developed cell organelles such as nuclear membrane, nucleus, mitochondria, etc. 

Thus, the correct answer is option B. 

Multiple choice biology biodiversity and classification monera five kingdoms of living organisms biodiversity and need of classification

Cyanobacteria belong  to_____________

  1. Monera

  2. Bryophyta

  3. Protista

  4. Plantae
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

The kingdom Monera includes organisms that are single-celled known as bacteria. The microorganisms in the kingdom Monera are considered as the most ancient living forms on earth. The kingdom is divided into two groups Archaebacteria and Eubacteria. All the organisms of this kingdom are prokaryotes. These cells do not have a nuclear membrane, the chromosome is single and circular, they also lack membrane-bound cellular organelles. This kingdom includes bacteria, cyanobacteria, mycoplasma, etc. They are unicellular organisms and do not have a specific mode of nutrition. They can be either aerobic or anaerobic. These organisms have a cell wall that is made up of peptidoglycans. The cell organelles are not membrane-bound. 

Multiple choice biology biodiversity and classification monera five kingdoms of living organisms biodiversity and need of classification

Cyanophyceae (Blue Green Algae) belongs to

  1. Plantae

  2. Protista

  3. Monera

  4. Metaphyta
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Monera kingdom includes prokaryotic unicellular organisms. They lack membrane-bound organelles like mitochondria, Golgi complex. They also lack a true nucleus. Instead, they have nucleoid, genetic material without a nuclear envelope. Examples include bacteria, Cyanophyceae (Blue-Green algae).

Thus, the correct answer is 'Monera.'

Multiple choice biology biodiversity and classification monera five kingdoms of living organisms biodiversity and need of classification

Spirulina belongs to the kingdom

  1. Monera

  2. Protista

  3. Plantae

  4. Fungi
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Kingdom Monera includes prokaryotic unicellular microorganisms. They lack membrane-bound organelles like mitochondria, golgi complex. They also lack true nucleus. Instead, they have nucleoid, a genetic material without nuclear envelope. They have cell wall. Examples include bacteria, Cyanobacteria like Spirulina. 

Thus, the correct answer is 'Monera.'

Multiple choice biology biodiversity and classification monera five kingdoms of living organisms biodiversity and need of classification

The group showing maximum nutritional diversity is

  1. Monera

  2. Plantae

  3. Fungi

  4. Algae
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

The kingdom monera is comprised of two groups as archaebacteria and eubacteria. There is diverse range of organisms which are placed under this kingdom. There are prokaryotic bacteria which possess the heterotrophic mode of nutrition in which the digested food material is directly engulfed by the cell. The cyanobacteria are autotrophic and can prepare their food through photosynthesis. There are some chemotrophs which use the organic and inorganic compounds as the source of energy. 

Thus, the correct answer is option A.