Challenger App

No.1 PSC Learning App

1M+ Downloads

Identify the correct statements regarding Periphyton.

  1. Periphyton are free-swimming organisms found in the open water.
  2. These organisms are typically found attached to or clinging to plant stems, leaves, or other submerged objects.
  3. Sessile algae and associated animal groups are examples of Periphyton.
  4. Periphyton are exclusively microscopic organisms.

    A1, 4

    B2 only

    C2, 3

    D3, 4

    Answer:

    C. 2, 3

    Read Explanation:

    • These are organisms which remain attached or clinging to stems and leaves of rooted plants or substances emerging above the bottom mud.

    • Sessile algae and their associated group of animals fall in this group.


    Related Questions:

    Consider the role of Keystone species in an ecosystem. Which of the following statements is correct?

    1. Keystone species are always the most abundant species in an ecosystem.
    2. The destruction of keystone species can lead to the collapse of the entire ecosystem.
    3. Keystone species play a critically important role in not maintaining the structure and function of an ecosystem.
      രണ്ട് ആവാസവ്യവസ്ഥകളിൽ പൊതുവായിട്ടുള്ള സ്പീഷീസുകളെ ഒഴിച്ചുള്ള സ്പീഷീസുകളുടെ എണ്ണത്തെ കാണിക്കുന്ന വൈവിധ്യം?
      What is the salt content range for brackish water bodies and estuaries?

      Regarding the components within an ecosystem, consider the following statements:

      1. Producers, consumers, and decomposers represent various trophic levels.
      2. These components are linked by complex food relationships, forming food chains and webs.
      3. Only consumers are part of the trophic levels in an ecosystem.
        മൊത്ത പ്രൈമറി ഉൽപ്പാദനത്തിന്റെ കാര്യത്തിൽ ഇനിപ്പറയുന്ന ആവാസവ്യവസ്ഥകളിൽ ഏതാണ് ഏറ്റവും ഉൽപ്പാദനക്ഷമതയുള്ളത്?