Tag: botany

Questions Related to botany

In evolutionary history, in which one of the following periods did the flowering plants make their first appearance?

  1. Certaceous of Mesozoic era

  2. Pleocene of cenopzic era

  3. Devonian of Paleozoic

  4. Permian of Paleozoic era


Correct Option: A

Salicornia is an example of ____________.

  1. Epiphyte

  2. Halophyte

  3. Mesophyte

  4. Parasite


Correct Option: A

Match List-I(Plant by-products) with List-II(Examples of compounds) and select the correct answer.

List-I List-II
a. Alkaloid $1$. Anthocyanin
b. Flavonoid $2$. Natural rubber
c. Terpenoid $3$. Folic acid
d. Vitamin $4$. Ephedrin
  1. A-$4$, B-$1$, C-$2$, D-$3$

  2. A-$3$, B-$2$, C-$1$, D-$4$

  3. A-$4$, B-$2$, C-$1$, D-$3$

  4. A-$3$, B-$1$, C-$2$, D-$4$


Correct Option: A

Neither flowers nor branches arranged in acropetal manner in

  1. Mangierai

  2. Oryza ( Poaceae)

  3. Coriandrum

  4. Amarphophallus


Correct Option: A

Consider the following statements.
a. In climacteric fruits, ethylene stimulates its own production.
b. Gibberellin present in a healthy stem causes some of the new cells to differentiate as phloem.
c. Loss of turgor in leaves stimulates the production of abscises acid.
Which of the statements given are correct?

  1. $1$ and $2$ only

  2. $2$ and $3$ only

  3. $1$ and $3$ only

  4. $1, 2$ and $3$


Correct Option: A

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

  1. Bentham and Hooker's system

  2. Engler and Prantl's system

  3. Hutchinson's system

  4. Takhtajan's system


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?

  1. Cuscutaceae, solanaceae, Verbenaceae

  2. Malvaceae, Tiliaceae, Cucurbitaceae

  3. Boraginaceae, Convolvulaceae, Solariaceae

  4. Acanthaceae, Fumariaceae, Lamiaceae


Correct Option: D

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


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.