Tag: systematics of living world

Quizzes (11) Questions (99)

Questions Related to systematics of living world

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

The system of classification of plants proposed by these two botanists is claimed to be a natural system.

  1. Engler and Prantl

  2. Bentham and Hooker

  3. Aristotle and Theophrastus

  4. Darwin and Wallace
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

George Bentham and Joseph Dalton Hooker are the British botanists. They proposed the classification system based on the natural system. This system includes the characters of the plants which exist in the natural conditions. The plants are classified based on their relative affinities.

Thus, the correct answer is option B.

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

Match List-I with List-II and select the correct answer.

List-I List-II
a. Aborescent lycopod $1$. Rafflesia
b. Largest flower $2$. Lepidodendron
c. Largest ovule $3$. Cycas
d. Tallest tree $4$. Sequoia
  1. A-$1$, B-$2$, C-$4$, D-$3$
  2. A-$1$, B-$2$, C-$3$, D-$4$
  3. A-$2$, B-$1$, C-$4$, D-$3$
  4. A-$2$, B-$1$, C-$3$, D-$4$
Reveal answer Fill a bubble to check yourself
A Correct answer
Multiple choice botany taxonomy and systematic botany taxonomy and systematics systematics of living world kingdom plantae plant taxonomy classification of biodiversity

In Lathyrus odoratus, if double heterozygous purple-flowered plants are crossed then what would be the probability of double homozygous white-flowered plants?

  1. $\cfrac{4}{16}$
  2. $\cfrac{3}{16}$
  3. $\cfrac{2}{16}$
  4. $\cfrac{1}{16}$
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation
According to the dihybrid, if the double heterozygous plants are crossed then the gametes formed will be- AB, ab, Ab, aB. The genotype of the double homozygous white flowering plant will be aabb because white is the recessive gene. The probability will be 1/16 according to the dihybrid cross ratio.

   Ab  AB  aB ab
 Ab  AAbb  AABb  AaBb  Aabb
 AB  AABb  AABB  AaBB  AaBb
 aB  aABb  AaBB  aaBB  aaBb
 ab  aAbb  aABb  aaBb  aabb

So, the correct option is '1/16'




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

Morphine is extracted from the latex of plant?

  1. Erythroxylum coca

  2. Cannabis sativa

  3. Papaver somniferum

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

An analgesic and narcotic drug obtained from opium and used medicinally to relieve pain. It is obtained from the latex of dried seed pods of Papaver somniferum belongs to the family Papaveraceae.

So, the correct option is ‘Papaver somniferum’. 

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

Phylogenetic system of classification is based on:
 

  1. Floral characters

  2. Evolutionary relationships

  3. Morphological features

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

A classification that is based on biochemical properties are termed as chemotaxonomy.

And the classification based on quantitative assessment of similarities and differences between the organisms are known as phenetic classification.

Classification based on cytological characteristics of organisms is known as cytotaxonomy. Also, phylogenetic classification is based on the evolutionary ancestry.

So the correct option is B. 

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

________ systems of classification were based on natural affinities among the organisms.

  1. Artificial

  2. Natural

  3. Phylogenetic

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

Natural system of classification takes into consideration comparable study of number of characters so as to bring out natural similarities and dissimilarities and hence natural relationships among the organisms. They include morphological characters, anatomical characters, cytological characters, physiology, ontogeny or development, reproduction, cytochemistry and biochemistry, experimental taxonomy, etc. So, the correct answer is 'Natural'.