Biology

Plant Biology and Classification

1,473 Questions

Plant Biology and Classification deals with the taxonomy, evolution, and morphological features of the plant kingdom. This collection offers practice questions on plant groups, taxonomic hierarchies, and specific plant characteristics. The questions are tailored for students preparing for biology competitive exams.

Plant taxonomyPteridophytesAngiospermsPlant morphologyAlgae and bryophytesClassification systems

Plant Biology and Classification Questions

Multiple choice

In which of these plants, sex organs are embedded in thallus?

  1. Moss

  2. Azolla

  3. Riccia

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

Riccia, a liverwort (Marchantiophyta), has a simple thallus body in which the sex organs (archegonia and antheridia) are embedded. In mosses, ferns, and Azolla, the sex organs are more distinctly structured rather than embedded in the thallus.

Multiple choice

The plants which grow in acidic soils are called

  1. halophytes

  2. oxylophytes

  3. chasmophytes

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

Oxylophytes are plants adapted to grow in acidic soils. Halophytes grow in saline conditions, chasmophytes grow in rock crevices, and psammophytes grow in sandy areas.

Multiple choice

Under which kingdom do algae fall?

  1. Bryophyta

  2. Pteridophyta

  3. Thallophyta

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

Algae are traditionally classified under the division Thallophyta because they have a simple body structure called a thallus, lacking true roots, stems, and leaves. Bryophyta includes mosses, while Pteridophyta includes ferns.

Multiple choice

Wastebasket taxon term is used to classify

  1. organisms that do not fit anywhere else

  2. organisms that have no economic importance

  3. organisms that once disappeared from fossil records, but have now reappeared

  4. fossilised structures which are now redeposited in new sediments
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Wastebasket taxon is used to classify organisms that do not fit anywhere else.

Multiple choice

In a biological name, where does the name of author appear?

  1. Before the generic name

  2. Before the specific epithet

  3. After the specific epithet

  4. Under the biological name

  5. Above the biological name
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Yes, it is correct. Name of the author appears after the specific epithet, i.e. at the end of the biological name and is written in an abbreviated form, e.g. Mangifera indica Linn. It indicates that this species was first described by Linnaeus.

Multiple choice

Which of the following rules is incorrect regarding the way to write biological name?

  1. Biological names are usually written in Latin.

  2. Biological names are written in italics.

  3. Biological name is underlined, when it is handwritten.

  4. It is written in two terms. The first term shows the species, while the second term shows the genus.

  5. The first term of the biological name begins with a capital letter.
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Yes, it is the correct answer. A biological name usually contains two terms. The first term shows the genus, while the second term shows the species.

Multiple choice

Which of the following options explains Taxon correctly?

  1. Taxon is a step in the classification hierarchy.

  2. Taxon is a particular rank in the biological classification.

  3. Taxon is a member of a species having a large number of similar characters.

  4. Taxon is the biological name.

  5. None of these
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Yes, it is correct. Any group or rank in a biological classification into which related organisms are classified is called taxon.