Which of the following statements is incorrect? (a) Mosses...

Name: Problem 79, Chapter 3: Objective NCERT at your FINGERTIPS: Biology
Uploaded: 2021-10-19T07:08:57-08:00
Duration: 6 min 57 s
Channel: Anas Venkitta
Description: Which of the following statements is incorrect? (a) Mosses alongwith lichens are the first organisms to colonise rocks. (b) Sphagnum is used as packing material for transportation of living material. (c) In liverworts, spores are produced after meiosis within the capsule. (d) Funaria possesses unicellular unbranched rhizoids.

Which of the following statements is incorrect? (a) Mosses alongwith lichens are the first organisms to colonise rocks. (b) Sphagnum is used as packing material for transportation of living material. (c) In liverworts, spores are produced after meiosis within the capsule. (d) Funaria possesses unicellular unbranched rhizoids.

Which of the following statements is incorrect?
(a) Mosses alongwith lichens are the first organisms to colonise rocks.
(b) Sphagnum is used as packing material for transportation of living material.
(c) In liverworts, spores are produced after meiosis within the capsule.
(d) Funaria possesses unicellular unbranched rhizoids.

Key Concepts

Sphagnum Moss Characteristics

Sphagnum moss is well-known for its high water retention capacity and its use in horticulture and biological packaging. Its unique physical and chemical properties, such as acidity and antimicrobial effects, make it valuable in maintaining moisture and preserving plant material during transport.

Pioneer Colonization

This concept refers to the ability of certain organisms, notably some bryophytes and lichens, to colonize barren and inhospitable substrates such as bare rock. Their early establishment plays a critical role in primary succession by initiating soil formation and creating conditions favorable for other plants to follow.

Bryophyte Reproduction

Bryophytes, which include mosses and liverworts, exhibit a life cycle where a dominant gametophyte stage alternates with a relatively short-lived sporophyte. In many mosses, the sporophyte develops a capsule in which spores are produced following meiosis. However, the reproductive structures and processes can vary among different groups, such as liverworts, where the sporophyte is typically simpler and often does not form a well-defined capsule.

Rhizoids

Rhizoids are hair-like structures found in bryophytes that function primarily in anchorage and water absorption. Their structure can vary, ranging from simple, unicellular forms to more complex branched types. Understanding the morphology and function of rhizoids is important in distinguishing different bryophyte taxa and appreciating how these plants interact with their substrates.

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