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Plant cell ke bare me 5-6pages
Plant cell ke bare mein Fasle 6 page English mein

Answer 1

Answer:

Plant cells are eukaryotic cells present in green plants, photosynthetic eukaryotes of the kingdom Plantae. Their distinctive features include primary cell walls containing cellulose, hemicelluloses and pectin, the presence of plastids with the capability to perform photosynthesis and store starch, a large vacuole that regulates turgor pressure, the absence of flagella or centrioles, except in the gametes, and a unique method of cell division involving the formation of a cell plate or phragmoplast that separates the new daughter cells.

Characteristics of plant cells

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Plant cells have cell walls, constructed outside the cell membrane and composed of cellulose, hemicelluloses, and pectin. Their composition contrasts with the cell walls of fungi, which are made of chitin, of bacteria, which are made of peptidoglycan and of archaea, which are made of pseudopeptidoglycan. In many cases lignin or suberin are secreted by the protoplast as secondary wall layers inside the primary cell wall. Cutin is secreted outside the primary cell wall and into the outer layers of the secondary cell wall of the epidermal cells of leaves, stems and other above-ground organs to form the plant cuticle. Cell walls perform many essential functions. They provide shape to form the tissue and organs of the plant, and play an important role in intercellular communication and plant-microbe interactions.[1]

Many types of plant cells contain a large central vacuole, a water-filled volume enclosed by a membrane known as the tonoplast[2] that maintains the cell's turgor, controls movement of molecules between the cytosol and sap, stores useful material such as phosphorus and nitrogen [3] and digests waste proteins and organelles.

Specialized cell-to-cell communication pathways known as plasmodesmata,[4] occur in the form of pores in the primary cell wall through which the plasmalemma and endoplasmic reticulum[5] of adjacent cells are continuous.

Plant cells contain plastids, the most notable being chloroplasts, which contain the green-colored pigment chlorophyll that converts the energy of sunlight into chemical energy that the plant uses to make its own food from water and carbon dioxide in the process known as photosynthesis[6]. Other types of plastids are the amyloplasts, specialized for starch storage, elaioplasts specialized for fat storage, and chromoplasts specialized for synthesis and storage of pigments. As in mitochondria, which have a genome encoding 37 genes,[7] plastids have their own genomes of about 100–120 unique genes[8] and are interpreted as having arisen as prokaryotic endosymbionts living in the cells of an early eukaryotic ancestor of the land plants and algae.[9]

Answer 2

The plant cell is the eukayotic cell.

Explanation:

• Plant cell may be defined as a type of eukaryotic cell that has well developed nucleus in it and membrane bound cell organelles
• Plant cell has an extra layer known as cell wall that maintains the turgidity and turgor pressure of the cell.
• Plant cell contains cell organelle like mitochondria, chloroplast, ribsomes, endoplasmic reticulum and different types of plastid like chromoplast, chloroplast and leucoplast.
• The plant cell do not contain centrioles and phragmoplast is formed during the cell division process.

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