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 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 group of plant lives the largest?

  1. Annual

  2. Perennial

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

Perennial plants live for more than two years, often for many years, whereas annuals complete their life cycle in one year and biennials in two. Therefore, perennials have the longest lifespan.

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

The plants growing in water are called ________.

  1. hydrophytes

  2. xerophytes

  3. hygrophytes

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

Hydrophytes are plants that are structurally and physiologically adapted to grow in water or very wet soils. In contrast, xerophytes are adapted to dry conditions, mesophytes to moderate moisture, and hygrophytes to humid land environments.

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 pictorial feature of plant kingdom classification of bryophytes types of bryophytes bryophyta

Largest moss is

  1. Pogonatum

  2. Funaria

  3. Dawsonia

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

Dawsonia is a genus of acrocarpous mosses that includes the tallest and largest self-supporting mosses in the world. Specifically, Dawsonia superba can grow up to 50 to 60 cm in height, which is exceptionally large for a bryophyte. Other genera like Funaria and Pogonatum are much smaller.