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Tapetum is -
- a)Parietal in origin usually the inner most layer of anther wall
- b)Modified endothecium of anther wall
- c)Outer most layer of sporogenous tissue modification
- d)Parietal in origin and is the inner most layer of ovule wall
Correct answer is option 'A'. Can you explain this answer?
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Tapetum is -a)Parietal in origin usually the inner most layer of anthe...
Tapetum is the innermost layer of the anther wall and is of parietal origin.
The tapetum is a specialized layer of cells present in the anther, which is the male reproductive organ of flowering plants. It plays a crucial role in the development and maturation of pollen grains. Here is a detailed explanation of tapetum and its characteristics:
1. Parietal in origin:
- The tapetum is derived from the parietal layer of the anther wall.
- Parietal tissues are the innermost layer of the anther wall, which surrounds the sporogenous tissue.
- The tapetum is formed from the innermost layer of the parietal tissues.
2. Location within the anther:
- The tapetum is located between the sporogenous tissue and the anther wall.
- It surrounds and nourishes the developing microspores and pollen grains.
- The tapetum provides essential nutrients, proteins, lipids, and other substances required for pollen development.
3. Function of the tapetum:
- The tapetum is responsible for the synthesis and secretion of various substances necessary for pollen development.
- It produces enzymes, such as cellulase and callose synthase, which are involved in the formation of the pollen wall.
- The tapetum also secretes proteins, lipids, and other components that contribute to the formation of exine, intine, and the pollen coat.
4. Degradation during pollen development:
- As pollen grains mature, the tapetum undergoes programmed cell death and degenerates.
- The degeneration of the tapetum releases its contents, including nutrients and enzymes, which are absorbed by the developing pollen grains.
- The tapetum's degradation also creates space within the anther for the release and dispersal of mature pollen grains.
In conclusion, tapetum is the innermost layer of the anther wall, derived from the parietal tissues. It plays a critical role in providing nutrients and synthesizing essential substances for pollen development. The tapetum's degeneration allows for the release of mature pollen grains.
The tapetum is a specialized layer of cells present in the anther, which is the male reproductive organ of flowering plants. It plays a crucial role in the development and maturation of pollen grains. Here is a detailed explanation of tapetum and its characteristics:
1. Parietal in origin:
- The tapetum is derived from the parietal layer of the anther wall.
- Parietal tissues are the innermost layer of the anther wall, which surrounds the sporogenous tissue.
- The tapetum is formed from the innermost layer of the parietal tissues.
2. Location within the anther:
- The tapetum is located between the sporogenous tissue and the anther wall.
- It surrounds and nourishes the developing microspores and pollen grains.
- The tapetum provides essential nutrients, proteins, lipids, and other substances required for pollen development.
3. Function of the tapetum:
- The tapetum is responsible for the synthesis and secretion of various substances necessary for pollen development.
- It produces enzymes, such as cellulase and callose synthase, which are involved in the formation of the pollen wall.
- The tapetum also secretes proteins, lipids, and other components that contribute to the formation of exine, intine, and the pollen coat.
4. Degradation during pollen development:
- As pollen grains mature, the tapetum undergoes programmed cell death and degenerates.
- The degeneration of the tapetum releases its contents, including nutrients and enzymes, which are absorbed by the developing pollen grains.
- The tapetum's degradation also creates space within the anther for the release and dispersal of mature pollen grains.
In conclusion, tapetum is the innermost layer of the anther wall, derived from the parietal tissues. It plays a critical role in providing nutrients and synthesizing essential substances for pollen development. The tapetum's degeneration allows for the release of mature pollen grains.
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Tapetum is -a)Parietal in origin usually the inner most layer of anthe...
Tapetum is the innermost layer of the anther wall and is of parietal origin. It plays a crucial role in the development and maturation of pollen grains. Let's understand the answer in detail:
1. Tapetum in the anther wall:
- The anther is a part of the male reproductive system in flowering plants.
- It consists of four microsporangia, also known as pollen sacs, where pollen grains are produced.
- The anther wall is composed of several layers, and the tapetum is one of these layers.
2. Parietal origin:
- The tapetum is derived from the parietal layer of the anther wall, which means it originates from the innermost layer.
- The parietal layer is responsible for the formation of the sporogenous tissue, which gives rise to pollen mother cells.
3. Function of tapetum:
- The tapetum has several important functions during pollen development.
- It provides nourishment to the developing pollen grains by supplying nutrients and metabolites.
- It also helps in the synthesis and deposition of various substances such as proteins, lipids, and sporopollenin, which are essential for pollen wall formation.
- Additionally, the tapetum aids in the release of mature pollen grains by secreting enzymes that degrade the cell walls surrounding the pollen sacs.
4. Structure of tapetum:
- The tapetum is a single layer of cells located between the sporogenous tissue and the middle layer of the anther wall.
- It is typically larger in size and has a dense cytoplasm compared to other anther wall layers.
- The tapetal cells often contain abundant organelles such as mitochondria, endoplasmic reticulum, Golgi apparatus, and lipid bodies.
In conclusion, tapetum is the innermost layer of the anther wall and is of parietal origin. It provides nourishment, synthesizes essential substances, and aids in the release of mature pollen grains. Understanding the structure and function of tapetum is crucial for the study of plant reproduction and pollen development.
1. Tapetum in the anther wall:
- The anther is a part of the male reproductive system in flowering plants.
- It consists of four microsporangia, also known as pollen sacs, where pollen grains are produced.
- The anther wall is composed of several layers, and the tapetum is one of these layers.
2. Parietal origin:
- The tapetum is derived from the parietal layer of the anther wall, which means it originates from the innermost layer.
- The parietal layer is responsible for the formation of the sporogenous tissue, which gives rise to pollen mother cells.
3. Function of tapetum:
- The tapetum has several important functions during pollen development.
- It provides nourishment to the developing pollen grains by supplying nutrients and metabolites.
- It also helps in the synthesis and deposition of various substances such as proteins, lipids, and sporopollenin, which are essential for pollen wall formation.
- Additionally, the tapetum aids in the release of mature pollen grains by secreting enzymes that degrade the cell walls surrounding the pollen sacs.
4. Structure of tapetum:
- The tapetum is a single layer of cells located between the sporogenous tissue and the middle layer of the anther wall.
- It is typically larger in size and has a dense cytoplasm compared to other anther wall layers.
- The tapetal cells often contain abundant organelles such as mitochondria, endoplasmic reticulum, Golgi apparatus, and lipid bodies.
In conclusion, tapetum is the innermost layer of the anther wall and is of parietal origin. It provides nourishment, synthesizes essential substances, and aids in the release of mature pollen grains. Understanding the structure and function of tapetum is crucial for the study of plant reproduction and pollen development.
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Tapetum is -a)Parietal in origin usually the inner most layer of anther wallb)Modified endothecium of anther wallc)Outer most layer of sporogenous tissue modificationd)Parietal in origin and is the inner most layer of ovule wallCorrect answer is option 'A'. Can you explain this answer?
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Tapetum is -a)Parietal in origin usually the inner most layer of anther wallb)Modified endothecium of anther wallc)Outer most layer of sporogenous tissue modificationd)Parietal in origin and is the inner most layer of ovule wallCorrect answer is option 'A'. Can you explain this answer? for Class 12 2024 is part of Class 12 preparation. The Question and answers have been prepared according to the Class 12 exam syllabus. Information about Tapetum is -a)Parietal in origin usually the inner most layer of anther wallb)Modified endothecium of anther wallc)Outer most layer of sporogenous tissue modificationd)Parietal in origin and is the inner most layer of ovule wallCorrect answer is option 'A'. Can you explain this answer? covers all topics & solutions for Class 12 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Tapetum is -a)Parietal in origin usually the inner most layer of anther wallb)Modified endothecium of anther wallc)Outer most layer of sporogenous tissue modificationd)Parietal in origin and is the inner most layer of ovule wallCorrect answer is option 'A'. Can you explain this answer?.
Tapetum is -a)Parietal in origin usually the inner most layer of anther wallb)Modified endothecium of anther wallc)Outer most layer of sporogenous tissue modificationd)Parietal in origin and is the inner most layer of ovule wallCorrect answer is option 'A'. Can you explain this answer? for Class 12 2024 is part of Class 12 preparation. The Question and answers have been prepared according to the Class 12 exam syllabus. Information about Tapetum is -a)Parietal in origin usually the inner most layer of anther wallb)Modified endothecium of anther wallc)Outer most layer of sporogenous tissue modificationd)Parietal in origin and is the inner most layer of ovule wallCorrect answer is option 'A'. Can you explain this answer? covers all topics & solutions for Class 12 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Tapetum is -a)Parietal in origin usually the inner most layer of anther wallb)Modified endothecium of anther wallc)Outer most layer of sporogenous tissue modificationd)Parietal in origin and is the inner most layer of ovule wallCorrect answer is option 'A'. Can you explain this answer?.
Solutions for Tapetum is -a)Parietal in origin usually the inner most layer of anther wallb)Modified endothecium of anther wallc)Outer most layer of sporogenous tissue modificationd)Parietal in origin and is the inner most layer of ovule wallCorrect answer is option 'A'. Can you explain this answer? in English & in Hindi are available as part of our courses for Class 12.
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Tapetum is -a)Parietal in origin usually the inner most layer of anther wallb)Modified endothecium of anther wallc)Outer most layer of sporogenous tissue modificationd)Parietal in origin and is the inner most layer of ovule wallCorrect answer is option 'A'. Can you explain this answer?, a detailed solution for Tapetum is -a)Parietal in origin usually the inner most layer of anther wallb)Modified endothecium of anther wallc)Outer most layer of sporogenous tissue modificationd)Parietal in origin and is the inner most layer of ovule wallCorrect answer is option 'A'. Can you explain this answer? has been provided alongside types of Tapetum is -a)Parietal in origin usually the inner most layer of anther wallb)Modified endothecium of anther wallc)Outer most layer of sporogenous tissue modificationd)Parietal in origin and is the inner most layer of ovule wallCorrect answer is option 'A'. Can you explain this answer? theory, EduRev gives you an
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