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Chapter 3: Problem 100

Marchantia is (a) An algae (b) Gymnosperm (c) Fern (d) Bryophyte

Short Answer

Expert verified
The correct classification of Marchantia is (d) Bryophyte.

Step by step solution

01

Understand the Classification of Marchantia

The first step is to know what Marchantia is in the biological classification. Marchantia is a genus of liverworts from the Marchantiaceae family. Liverworts are a type of plant under the category of Bryophytes.
02

Comparing With the Options

Examine the given options. An algae is a simple, non-flowering plant. Gymnosperms are a type of vascular plant, ferns are non-flowering vascular plants and Bryophytes are non-vascular plants.
03

Choose the Correct Option

Since Marchantia is a liverwort and liverworts are Bryophytes, then the correct choice is option (d) Bryophyte.

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Key Concepts

These are the key concepts you need to understand to accurately answer the question.

Marchantia
Marchantia is an intriguing genus that belongs to the Marchantiaceae family. It is a prominent example of a group of non-vascular plants known as liverworts. These fascinating organisms have a simple structure. Unlike higher plants, Marchantia does not have roots, stems, or true leaves.
Instead, they have a flattened, ribbon-like body structure called a thallus, which aids in photosynthesis and nutrient absorption. Marchantia thrives in moist, shaded environments, often found growing in damp soil, rocks, or tree barks.
Their reproductive mechanisms involve spores rather than seeds, which distinguishes them from most other plant groups.
  • Characterized by a flattened thallus.
  • Grows in moist, shaded places.
  • Reproduces via spores, not seeds.
Bryophytes
Bryophytes form one of the earliest groups of plants to evolve on land. They are distinct for being non-vascular, which means they do not have specialized tissues (like xylem and phloem) to conduct water and nutrients.
Types of Bryophytes include mosses, liverworts, and hornworts. These plants are primarily green and rely heavily on water for survival and reproduction.
Bryophytes reproduce using spores, and they have a life cycle involving alternating generations - a dominant gametophyte stage and a dependent sporophyte stage.
  • Non-vascular plant group.
  • Includes mosses, liverworts, hornworts.
  • Reproduce using spores.
  • Exhibit alternation of generations in their life cycle.
Liverworts
Liverworts, closely related to mosses and hornworts, belong to the Bryophyte category. These small plants play a crucial role in the ecosystem by helping to break down rocks and contribute to the formation of soil.
One distinctive feature of liverworts like Marchantia is their ability to reproduce both sexually and asexually. In sexual reproduction, they produce specialized structures that release spores, while asexual reproduction involves gemmae, which are small, multi-cellular bodies that can develop into new plants.
Liverworts are incredibly adaptive, but they still require moisture for growth and reproduction.
  • Important in soil formation.
  • Can reproduce sexually and asexually.
  • Requires high moisture levels.
  • Uses spores for reproduction.

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Most popular questions from this chapter

Algae found in areas with abundant light as well as areas of great depths with no light is (a) Red algae (b) Green algae (c) Blue algae (d) Brown algae

Organisms which first colonizes the base rocks is (a) Mosses (b) Mycorrhiza (c) Lichens (d) Both (a) and (c)

Green algae performs oogamous type sexual reproduction (a) Sphagnum (b) Volvox (c) Dictyota (d) Spirogyra

Volvox is a (a) Unicellular algae (b) Filamentous algae (c) Colonial algae (d) Symbiotic algae

Spore in bryophytes are formed (a) On the gametophyte (b) On the sporophyte (c) In the seta of sporophyte (d) In the capsule of sporophyte
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