Tag: taxonomy and systematic botany

Quizzes (16) Questions (144)

Questions Related to taxonomy and systematic botany

Multiple choice botany taxonomy and systematic botany importance and classification of angiosperms plant adaptation adaptation in plants uses of angiosperms classification of angiosperms

Development of microsporangium in angiosperms and gymnosperms is of.

  1. Eusporangiate type

  2. Leptosporangiate type

  3. Monosporic type

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

In angiosperms and gymnosperms, the microsporangium develops from a group of archesporial cells, which is characteristic of the eusporangiate type of development.

Multiple choice botany taxonomy and systematic botany importance and classification of angiosperms plant adaptation adaptation in plants uses of angiosperms classification of angiosperms

In angiosperms normally after fertilization.

  1. The zygote divides earlier than the primary endosperm nucleus

  2. The primary endosperm nucleus divides earlier than the zygote

  3. Both the zygote and primary endosperm nuclei divide simultaneously

  4. Both the zygote and primary endosperm nuclei undergo a resting period
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

In angiosperms, the primary endosperm nucleus (PEN) typically divides prior to the division of the zygote. This ensures that the nutritive endosperm tissue is established early to support the subsequent development of the embryo from the zygote.

Multiple choice botany taxonomy and systematic botany importance and classification of angiosperms plant adaptation adaptation in plants uses of angiosperms classification of angiosperms

Which one of the following statements is correct?

  1. In the wood of dicots, ray tracheids are absent

  2. In the wood of gymnosperms, ray parenchyma is absent

  3. In most commercially important dicot woods, fibers are absent

  4. In the wood of all gymnosperms, vessels are absent
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Gymnosperm wood is generally composed of tracheids and lacks vessels. Ray tracheids are often found in gymnosperms but are absent in most dicot woods.

Multiple choice botany taxonomy and systematic botany taxonomy and systematics systematics of living world kingdom plantae plant taxonomy classification of biodiversity

Artificial system of classification classifies plants on the basis of

  1. One or very few characters

  2. Phylogenetic trends

  3. Many naturally existing characters

  4. None of the above
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

The major advantage of the artificial system of the classification is considering one or few characters of the plants, so the option (A) is the correct answer.
The phylogenetic trends consideration are all comes under the natural classification, so the option (B) is not the correct answer.
The option (C) refers, many naturally existing characters, which is suitable for the natural classification, not for artificial classification, so the option (C) is also not the correct answer.

Multiple choice botany taxonomy and systematic botany taxonomy and systematics systematics of living world kingdom plantae plant taxonomy classification of biodiversity

Reason for diversity in living being is 

  1. Mutation

  2. Long term evolutionary change

  3. Genetic recombination

  4. All of the above
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Mutation is the sudden change in the genetic composition of the living organism which is inherited from one generation to the other. Due to random changes in the genetic pool, it acts as a source of variation.

In order, to adjust the changing conditions with evolution, the organism undergoes changes in the genome which are inherited by generations and act as a source of diversity.
Genetic recombination is the production of offspring with combinations of traits that differ from those found in either parent. It leads to change in the genetic pool and act as a source of variation.
So, the correct answer is option D.

Multiple choice botany taxonomy and systematic botany taxonomy and systematics systematics of living world kingdom plantae plant taxonomy classification of biodiversity

Arisotle classify plants into

  1. Trees

  2. Shrubs

  3. Trees, shrubs and herbs

  4. None of these
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation
Classification is the arrangement of living organisms into groups on the basis of similarities and dissimilarities between them and placing within taxonomic hierarchy such as kingdom, genus, species etc. Aristotle was the first to give a scientific basis for classification. He classified living organisms into two groups; plants and animals.
He divided plants into trees, shrubs and herbs on the basis of simple morphological characters.
So, the correct answer is 'Trees, shrubs and herbs'.
Multiple choice botany taxonomy and systematic botany taxonomy and systematics systematics of living world kingdom plantae plant taxonomy classification of biodiversity

First great taxonomist was

  1. Linnaeus

  2. Hooker

  3. Aristotle

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

Carolus Linnaeus is a known taxonomist who proposed the classification system and the binomial nomenclature. The classification system is known as the artificial system of classification which is based on the floral characters. The structures of carpel and anther were taken into consideration for the classification. The binomial nomenclature was used for the naming of the organisms in which the first epithet describes the genus and the second epithet describes the species. He is regarded as the father of taxonomy. 
Thus, the correct answer is option A. 

Multiple choice botany taxonomy and systematic botany taxonomy and systematics systematics of living world kingdom plantae plant taxonomy classification of biodiversity

Who proposed the natural classification of plants?

  1. Carolus Linnaeus

  2. John Hutchinson

  3. Bentham and Hooker

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

The natural system of classification was proposed to classify the organism on the basis of similarities which can be easily observed. The classification takes into consideration the number of similar and different characters. The natural system of classification was introduced by Bentham and Hooker for the plants which have seeds. This was explained in the book Genera Plantarum which was published in three volumes and based on the work of these scientists.

Thus, the correct answer is option C.