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Under the Kingdom Plantae, which of the following individuals are predominantly aquatic?
1. Bryophytes
2. Algae
3. Pteridophyta
4. Gymnosperms

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Correct Answer - Option 2 : Algae

The correct answer is Algae.

  • Kingdom Plantae includes brown, green, and red algae, mosses Ferns, and seeded plants with or without flowers.

  • They are multicellular organisms. They contain photosynthetic pigments in plastids and their main mode of nutrition is photosynthesis.
  • The Plant Kingdom is classified into five subgroups namely Thallophyta, Bryophyta, Pteridophyta, Gymnosperms, and Angiosperms.
  • Algae belong to the Thallophyta group and are mostly aquatic.
  • They have chlorophyll and are phototropic.
  • Other members of this group include fungi.
  • Other examples are Spirogyra, Ulothrix, Cladophora, and Chara.

  •  Bryophytes consist of liverworts, hornworts, and mosses.
  • It consists of about 20,000 plant species.
  • Pteridophytes produce neither flowers nor seeds.
  • Examples include Ferns, horsetails, and lycophytes.
  • Gymnosperms are a group of seed-producing plants. It includes conifers, cycads, Ginkgo, and gnetophytes.

  • Phylum Arthropoda is the largest phylum in the animal kingdom.
  • It was first created by Von Seibold in 1845.
  • Around two-thirds of all named species on earth comes under phylum arthropods.
  • The body of arthropods is covered by a chitinous exoskeleton.
  • Phylum Arthropoda has jointed appendages.
  • Respiratory organs of arthropods are gills, book gills, book lungs, or tracheal system.
  • The circulatory system in Arthropoda is of open type.
  • Excretion in Arthropoda takes place through malpighian tubules.
  • Examples of Phylum Arthropoda are:
    • Cockroach.
    • Prawn.
    • Crab.
    • Scorpion.
    • Centipede.
    • Housefly.
    • Ticks.
    • Mites.

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