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 botany kingdom plantae uses of bryophytes introduction to bryophytes cryptogams

Antherozoids of Marchantia are

  1. Short, curved and biflagellate

  2. Short, straight and multiflagellate

  3. Long, straight and biflagellate

  4. Long, curved and biflagellate
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

The antherozoids of Marchantia are biflagellate, short, and curved, designed for swimming to the archegonia in a water film.

Multiple choice botany kingdom plantae uses of bryophytes introduction to bryophytes cryptogams

Five rowed archegonial neck occurs in ____________.

  1. Marchantia

  2. Funaria

  3. Porella / Madotheca

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

The answer is option C i.e. "Porella/ Madotheca"


Archegonia are the female reproductive part located on the surface of the plant thallus in bryophytes and pteridophytes.
  • In Porella/ Madotheca archegonial neck is long, comprises of five vertical rows of neck cells.
  • In Marchantia, the archegonial neck is arranged in 8 rows.
  • In Funaria, the archegonial neck is single-layered or rowed.
  • In Riccia, the archegonial neck consists of six vertical rows.

Multiple choice botany kingdom plantae uses of bryophytes introduction to bryophytes cryptogams

Funaria is a moss.

  1. True

  2. False
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Funaria is a genus of moss. In Funaria, rhizoids are present. They are primitive multicellular plants. They are autotrophic plants. They show alteration of generation. They reproduce by spore formation.

Thus, the correct answer is option A.

Multiple choice botany kingdom plantae uses of bryophytes introduction to bryophytes cryptogams

Which of the following statements is incorrect?

  1. Mosses along with lichens are the first organisms to colonise rocks.

  2. Sphagnum is used as packing material for transportation of living material.

  3. In liverworts, spores are produced after meiosis within the capsule.

  4. Funaria possesses unicellular unbranched rhizoids.
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Funaria has a radial symmetry with a once branched axis or stem, a number of spirally arranged leaves and branched colourless multicellular rhizoids. The axis is aerial, erect, slender and monopodial branched.

So the correct option is D.

Multiple choice botany kingdom plantae uses of bryophytes introduction to bryophytes cryptogams

The prominent phase in the life cycle of bryophytes is ___________.

  1. gametophyte

  2. sporophyte

  3. seta

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

Bryophytes shows two morphologically distinct heteromorphic generations, i.e. gametophytic and sporophytic generations. Gametophytic generation is the dominant phase of life cycle and in general the term 'plant body' is used to represent this phase.

Multiple choice botany kingdom plantae uses of bryophytes introduction to bryophytes cryptogams

Bryophytes are the first land plants but incompletely adapted to land conditions as______________________

  1. Plant body is parenchymatous

  2. Protonema is present

  3. Male gametes are motile

  4. Stomata are absent
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Certain features in bryophytes are not completely supporting the life of bryophytes on land like:

  • Absence of stomata
  • The plant body lacks true roots, stem or leaves
  • Vascular tissues are completely absent.
  • Water is essential for fertilization.

Multiple choice botany kingdom plantae uses of bryophytes introduction to bryophytes cryptogams

Give the differences between thallophyta and bryophyta.

  1. Thallophyta: Body is thallus like, not differentiated into root, stem, and leaves. Bryophyta: Plant's body is differentiated into leaf-like structure and rhizoids.

  2. Thallophyta: Sex organs single celled.
    Bryophyta: Sex organs multicellular.

  3. Both A and B

  4. None of these
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

The differences between thallophyta and bryophyta are :
(i) Thallophyta: Body is thallus like, not differentiated into root, stem and leaves. Sex organs single celled. Example: Spirogyra.
(ii) Bryophyta: Plant body is differentiated into leaf and rhizoids. Sex organs multicellular. Example : Moss

Multiple choice botany kingdom plantae uses of bryophytes introduction to bryophytes cryptogams

More than one answer may be correct:
Marchantia polymorpha
1. Is dioecious
2. Possesses antheridiophores and archegoniophores
3. Lacks foot and seta in its sporophyte
4. Is heterosporous.

  1. 1, 2, 3 are correct

  2. 1 and 2 are correct

  3. 2 and 4 are correct

  4. 1 and 3 are correct
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Marchantia polymorpha is dioecious (statement 1 is correct) and produces specialized structures called antheridiophores and archegoniophores (statement 2 is correct). The sporophyte does possess a foot and seta (making statement 3 incorrect), and it is homosporous, not heterosporous (making statement 4 incorrect).

Multiple choice botany kingdom plantae uses of bryophytes introduction to bryophytes cryptogams

Which one is an amphibious plant

  1. Lotus

  2. Vallisneria

  3. Typha

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

Lotus, Vallisneria and Trapa are fully aquatic plants. They can survive only in water.

But, Typha is a genus which includes a variety of plants. It is aquatic, semi-aquatic, rhizomatous and herbaceous plants in nature.
So the correct option is C.