Biology

Plant Biology and Classification

1,796 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 biology pictorial feature of plant kingdom phanerogams gymnosperms angiosperms

Pick out the wrong statement.

  1. Double fertilization is unique to gymnosperms and monocotyledons

  2. Sequoia, a gymnosperm is one of the tallest trees
  3. Phaeophyceae members possess chlorophylls $a, c$, carotenoids and xanthophylls

  4. Moss is a gametophyte which consists of two stages, namely protonema stage and leafy stage

  5. Evolutionarily, pteridophytes are the first terrestrial plants to possess xylem and phloem
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Double fertilization is a unique characteristic of angiosperms, not gymnosperms. Gymnosperms produce seeds but do not undergo double fertilization.

Multiple choice biology pictorial feature of plant kingdom phanerogams gymnosperms angiosperms

'Wheat' belongs to division ____

  1. Bryophyta

  2. Pteridophyta

  3. Gymnosperms

  4. Angiosperms
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Species of wheat belongs to genus Triticum. Wheat is a type of food crop. Wheat has seeds which as used as food to human beings. Angiosperms include seed containing plants.

So, the correct option is 'Angiosperms'.

Multiple choice biology pictorial feature of plant kingdom phanerogams gymnosperms angiosperms

The first true angiosperm evolved from an ancestor is

  1. Arceuthobium

  2. Gnetum

  3. Cycas

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

According to Richard Y-wettstein (Gnetales-angiosperms theory), Gnetales and angiosperms are closely related to each other, because of morphological similarities in the flowers of Gnetum and pro-angiosperms and thus might have originated from common ancestors.

Multiple choice biology pictorial feature of plant kingdom phanerogams gymnosperms angiosperms

Which series includes ranales, parietales and malvales?

  1. Calyciflorae

  2. Thalamiflorae

  3. Disciflorae

  4. Bicarpellatae

  5. Inferae
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

In Bentham and Hooker's classification, the series Thalamiflorae includes orders like Ranales, Parietales, and Malvales, characterized by flowers with a convex thalamus.

Multiple choice

Which is not a specialized parenchyma cell?

  1. Transfer Cell

  2. Sieve tube members

  3. Cholenchyma

  4. Vessel Members
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Vessel members are part of xylem tissue, not specialized parenchyma. Transfer cells are specialized parenchyma. Sieve tube members are phloem elements. Cholenchyma appears to be a misspelling but parenchyma-related.

Multiple choice

What is the equivalent to a companion cell in a pine tree?

  1. anchor cell

  2. albuminous cell

  3. who cell

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

In gymnosperms like pine trees, sieve cells are the equivalent of sieve tube members in angiosperms, and albuminous cells are the equivalent of companion cells.

Multiple choice

Tracheids are what kind of cells?

  1. Parenchyma

  2. Sclaryncyma

  3. Collenchyma
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Tracheids are elongated cells with thick lignified secondary walls that provide both structural support and water conduction in plants. They are a type of sclerenchyma tissue, which consists of dead cells with thick walls at maturity. Parenchyma cells are thin-walled and living, while collenchyma have unevenly thickened but unlignified walls.

Multiple choice

This cell types is cheap to make

  1. Collenchyma

  2. Chorenchyma

  3. Parenchyma

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

Parenchyma cells are the most common and least specialized plant cells. Because they have thin primary cell walls and lack thick secondary walls, they require less energy and metabolic resources to produce compared to collenchyma or sclerenchyma.

Multiple choice natural vegetation and wildlife of india and world resources of india and world general knowledge

Consider the following classification of Biodiversity.
1. Alpha-diversity : Between community diversity
2. Beta-diversity : Within community diversity
3. Gamma diversity : Overall biodiversity
Which among the above is/are incorrectly paired?

  1. Only 2

  2. Only 3

  3. 1 and 2

  4. 1, 2 and 3
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Alpha-diversity refers to diversity within a particular area or ecosystem, whereas beta-diversity describes the comparison of diversity between communities. Since statements 1 and 2 interchange these definitions, both are incorrectly paired, making option C correct.

Multiple choice

A tool used by scientists to identify unknown organisms based on observable traits is called:

  1. dichotomous key.

  2. taxonomic Tree

  3. scientific name.

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

A dichotomous key is a scientific tool used to identify organisms based on a series of choices between two contrasting physical characteristics. By following the path of traits that match the specimen, the user can determine its correct identity.

Multiple choice

What does taxonomy mean?

  1. common names

  2. scientific names

  3. giving names to things
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Taxonomy is the branch of science concerned with classification, especially of organisms. It involves naming, describing, and grouping living things based on shared characteristics.

Multiple choice botany kingdom plantae classification of bryophytes types of bryophytes bryophyta

The female sex organs in Riccia and Funaria is

  1. Antheridium

  2. Paraphyses and capsule

  3. Archegonium

  4. All of the above
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

In Bryophytes, archegonium is the female sex organ. The female shoot arise from the base of the male shoot and called as archegonial branch or archegoniophore. The apex of female shoot is called female receptacle from which cluster of archegonia arise intermixed with non- capitate paraphysis. 

Each archegonium has a stalk, flask-shaped venter and a neck. Venter encloses a basal egg cell (oosphere) and upper smaller venter canal cell. Neck consists of 6 or more neck canal cells (6-11).

Multiple choice botany kingdom plantae classification of bryophytes types of bryophytes bryophyta

Plant body of liverworts is

  1. Thalloid in Porella

  2. Thalloid in Marchantia

  3. Leafy in Marchantia

  4. More than one option is correct
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Liverworts can have diverse plant bodies; some like Marchantia are thalloid, while others like Porella are leafy. Thus, stating Marchantia is thalloid is correct, but claiming it is the exclusive thalloid form or that Marchantia is leafy is incorrect, making the 'more than one' option a distractor since specific statements can vary, but Marchantia specifically has a thalloid body.