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

A mutant strain of Neurospora which fails to grow on a minimal medium unless supplemented with a nutrient is called

  1. Auxotroph

  2. Autotroph

  3. Heterotroph

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

An auxotroph is a mutant organism that requires a specific nutrient for growth that the wild-type strain can synthesize on its own.

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

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
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Angiosperms first appeared in the Early Cretaceous Period of the Mesozoic Era. Fossil records from approximately 130-140 million years ago show the earliest definitive flowering plant evidence.

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

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-$4$
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Alkaloids include compounds like Ephedrin (A-4), Flavonoids include Anthocyanin (B-1), Terpenoids include Natural rubber (C-2), and Vitamins include Folic acid (D-3).

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

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 $3$
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

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
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Bentham and Hooker's system of classification is based on morphological characters and is considered a natural system, not a phylogenetic one. Phylogenetic systems aim to reflect evolutionary relationships, which the others listed do.

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

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
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Acanthaceae, Fumariaceae, and Lamiaceae all consistently display zygomorphic (bilaterally symmetrical) flowers with bicarpellary (two-carpel) gynoecium. Other options contain families with actinomorphic flowers or different gynoecium arrangements.