Explain the functions of plant cell wall in growth, development, maintenance and reproduction of plants.
The plant cell wall is a rigid, protective outer layer primarily composed of cellulose, playing multifaceted roles throughout a plant's life cycle.
-
Growth: It provides structural support and resistance against turgor pressure, allowing the cell to expand directionally. It also regulates cell size and shape during growth.
-
Development: The cell wall determines cell differentiation and morphology, guiding the formation of specialized tissues and organs (e.g., xylem, phloem) and ultimately the plant's overall architecture.
-
Maintenance: It offers mechanical strength and protection against physical stress (wind, gravity), pathogen invasion (acting as a physical barrier), and osmotic lysis, maintaining cell integrity. It also facilitates cell-to-cell communication.
-
Reproduction: The cell wall is crucial for pollen tube growth, guiding it towards the ovule for fertilization. It also forms components of the seed coat, protecting the developing embryo.
Answered By:
Sakshi Negi
Sakshi Negi is a Delhi-based journalist and content specialist with expertise in educational content and digital media, focusing particularly on government exam preparation and career guidance. With a degree in Journalism and Mass Communication from NRAI School of Mass Communication and her background as a Kendriya Vidyalaya alumna, she brings unique insights into the Indian education system and government sector opportunities.
Similar Questions
Briefly discuss significant features of heterosis and explain the dominance and overdominance hypotheses of heterosis, giving their main features.
Define Marker-Assisted Selection and give suitable examples. Discuss the applications of marker-assisted selection in recurrent selection, gene pyramiding and QTL introgression.
Define 'Grow-out test'. Explain briefly the methods of roguing in seed fields.
Define cell cycle. Describe different types and phases of cell cycle.
Classify plant mineral nutrients based on biochemical functions. How do excess minerals in the soil limit the plant growth?
Explain mutagenesis with its classification. Discuss briefly the mechanisms of action of alkylating agents and azide mutagens in crop improvement.
What do you mean by Intellectual Property? Discuss the protection of Intellectual Property Rights in reference to patent, plant breeders' rights and copyright.
Why do fruit plants need to be propagated vegetatively? Explain the advantages and disadvantages of asexual and sexual propagation.
Give an account on double haploid and its applications in plant breeding. Also discuss the production methods of haploid.
Define genetic purity. How can the maintenance of genetic purity of varieties be done outside their normal cultivation area?
Important Questions from Miscellaneous
Write a note in 150 words
Mendelian and non-Mendelian traits.Write a note in 150 words
Theoretical significance of Purum kinship-system.Write a note in 150 words
Smell as a signal among non-human primates.Write a note in 150 words
Osteodontokeratik culture and its makers.Discuss the Miocene hominoid remains and their significance in evolution.
