Tag: taxonomy and systematic botany

Questions Related to taxonomy and systematic botany

Which one of the following systems of plant classification is not phylogenetic?

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

  1. Bentham and Hooker's system

  2. Engler and Prantl's system

  3. Hutchinson's system

  4. Takhtajan's system

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Correct Option: A

Flowers of Casuarinas exhibit.

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

  1. Poroganmy

  2. Mesogamy

  3. Chalazogamy

  4. Apogamy

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Correct Option: A

Which one of the following clusters of families is identified due to the presence of the zygomorphic flowers and bicarpellary gynoecium's?

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

  1. Cuscutaceae, solanaceae, Verbenaceae

  2. Malvaceae, Tiliaceae, Cucurbitaceae

  3. Boraginaceae, Convolvulaceae, Solariaceae

  4. Acanthaceae, Fumariaceae, Lamiaceae

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Correct Option: D

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

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

  1. Engler and Prantl

  2. Bentham and Hooker

  3. Aristotle and Theophrastus

  4. Darwin and Wallace

Show answer
Correct Option: B
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.

In some flowering plants, the requirement of long day length or low temperature treatment for flowering can be effectively substituted by _______________.

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

  1. Morphactins

  2. Coumarins

  3. $2, 4$-D

  4. Gibberllins

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Correct Option: A

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

  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-$4$

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Correct Option: A

Select an incorrect match.

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

  1. Whorled phyllotaxy - Alstonia, Nerium

  2. Decussate phyllotaxy - Quisqualis, Psidium, Syzygium

  3. Alternate phyllotaxy - Mustard, China rose, Sunflower

  4. Opposite phyllotaxy - Zinnia, Calotropis

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Correct Option: A

Gynobasic style is the characteristic feature of the family Labiates but it is also found in several members of.

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

  1. Nymphaeaccae

  2. Apocynasceae

  3. Boraginaceae

  4. Liliaceae

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Correct Option: A

Gynobasic style is characteristic feature of the family ____________.

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

  1. Rosaceae

  2. Orchidaceae

  3. Labiatae

  4. Cucurbitaceae

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Correct Option: A

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

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

  1. $\cfrac{4}{16}$

  2. $\cfrac{3}{16}$

  3. $\cfrac{2}{16}$

  4. $\cfrac{1}{16}$

Show answer
Correct Option: D
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'