Tag: botany

Quizzes (264) Questions (5276)

Questions Related to botany

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

In flowering plants, meiosis takes place during?

  1. Pollen grain formation

  2. Seed formation

  3. Gamete formation

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

Meiosis occurs during the formation of gametes (gametogenesis) in the life cycle of flowering plants to reduce the chromosome number from diploid to haploid.

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

The modern classification of organisms is based on which of the following aspects?

  1. Physiology

  2. Fossils

  3. Phylogeny

  4. Morphology
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation
  • Modern taxonomy is based on the hypotheses' of the evolutionary history of organisms, known as Phylogeny. As with the scientific method, scientists develop a hypothesis on the history of an animal and utilize modern science and technology to prove phylogeny.
  • With the advent of such fields of study as phylogenetics, cladistics, and systematics, the Linnaean system has progressed to a system of modern biological classification based on evolutionary relationships between organisms, both living and extinct.
  • So the correct option is 'phylogeny'.
Multiple choice botany taxonomy and systematic botany taxonomy and systematics systematics of living world kingdom plantae plant taxonomy classification of biodiversity

A cladogram conveys information about ancestors and descendants of an organism

  1. True

  2. False
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation
Cladogram is a diagrammatic representation of the hypothetical relationships between various animals in a phylogeny.  It helps to derive information regarding the common ancestors and descendants of an organism.
So, the correct answer is, 'True'.
Multiple choice botany taxonomy and systematic botany taxonomy and systematics systematics of living world kingdom plantae plant taxonomy classification of biodiversity

The term taxonomy is introduced by

  1. De Candolle

  2. Benthum and Hooker

  3. Linnaeus

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

Ther term taxonomy is introduced by Carl Linnaeus. He is called as the father of taxonomy. He developed taxonomic hierarchy. It is also called as Linnaeus hierarchy. In it, domain is the highest rank followed by kingdom, phylum, class, order, family, genus, and species. Species is the lowest rank in the hierarchy. 

Thus, the correct answer is option C.

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

Artificial systems gave equal weightage to vegetative and sexual  characteristics; this is not acceptable because often ____ characters are more easily affected by environment. 

  1. vegetative

  2. sexual

  3. anatomical

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

Artificial systems of classification were based upon vegetative and sexual characteristics, where both vegetative and sexual characteristics were given equal weightage. It was not acceptable because vegetative characters are more easily affected by environment.

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

______ classification systems were based on evolutionary relationships between various organisms. 

  1. Natural

  2. Artificial

  3. Phylogenetic

  4. Both (a) and (b)
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Classification based on evolutionary relationships of organisms is called phylogenetic system of classification.

Multiple choice botany reproduction in angiospermic plants artificial vegetative propagation asexual modes of reproduction common modes of vegetative propagation biotechnological regulations pcr

Vegetative reproduction is most favourable with which part of plant.

  1. Stem

  2. Root

  3. Leaves

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

  • A stem can easily be cut out and planted at a different location for growing a new plant.
  • Steam is most easy to manage among the given parts of the plant.

So, the correct answer is 'Stem'.

Multiple choice botany reproduction in angiospermic plants artificial vegetative propagation asexual modes of reproduction common modes of vegetative propagation

Artificial vegetative propagation is a .......... method.

  1. Slow

  2. Natural

  3. Man-made

  4. Both A and C
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Artificial propagation is the creation of new life by other than the natural means available to an organism. Cutting plants' stems and placing them in compost is also a form of artificial reproduction. We can grow many plants from one plant by using the man-made methods. The process of growing many plants from one plant by man-made methods is called as the artificial propagation of plants.