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Read the following text and answer the following questions on the basis of the same:
A typical anther is bilobed. It is a tetragonal structure consisting of four microsporangia. These microsporangia form pollen sac which on maturity gets filled with a pollen grains. Pollen grains represent the male gametophytes, their cell wall is very hard. Pollen grains of many species cause severe allergies which cause various diseases in human beings.
The prominent pollen grain aperture called germ pore is present in:
- a)Exine
- b)Intine
- c)Vegetative cell
- d)Generative cell
Correct answer is option 'A'. Can you explain this answer?
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Read the following text and answer the following questions on the ba...
The prominent pollen grain aperture called germ pore is present in exine, it is decay-resistant outer coating of a pollen grain or spore.
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Read the following text and answer the following questions on the ba...
Answer:
Introduction:
The given question is related to the structure of an anther and the location of a prominent pollen grain aperture called the germ pore. The options provided are Exine, Intine, Vegetative cell, and Generative cell. The correct answer is option 'A', which is Exine.
Explanation:
An anther is a part of the stamen, which is the male reproductive structure of a flower. It is typically bilobed, meaning it has two lobes. Each lobe of the anther consists of two microsporangia, making a total of four microsporangia in a typical anther.
Structure of an Anther:
1. Tetragonal Structure: The anther is a tetragonal structure, which means it has four sides or faces.
2. Microsporangia: Each face of the anther contains a microsporangium, also known as a pollen sac. These microsporangia are responsible for the production and maturation of pollen grains.
3. Pollen Grains: The pollen grains inside the microsporangia represent the male gametophytes. They are produced through a process called microsporogenesis. As the pollen grains mature, the microsporangia get filled with them.
Pollen Grain Aperture:
1. Definition: The pollen grain aperture is the opening or pore present in the pollen grain.
2. Germ Pore: The prominent pollen grain aperture, known as the germ pore, is present in the exine layer of the pollen grain.
3. Exine: The exine is the outermost layer of the pollen grain, which is tough and resistant. It provides protection to the pollen grain during its dispersal and ensures its survival.
Conclusion:
In conclusion, the prominent pollen grain aperture called the germ pore is present in the exine layer of the pollen grain. The exine is the outermost layer of the pollen grain, which is hard and resistant. This aperture allows the pollen tube to emerge during pollination, enabling the male gametes to reach the female reproductive structures of the flower.
Introduction:
The given question is related to the structure of an anther and the location of a prominent pollen grain aperture called the germ pore. The options provided are Exine, Intine, Vegetative cell, and Generative cell. The correct answer is option 'A', which is Exine.
Explanation:
An anther is a part of the stamen, which is the male reproductive structure of a flower. It is typically bilobed, meaning it has two lobes. Each lobe of the anther consists of two microsporangia, making a total of four microsporangia in a typical anther.
Structure of an Anther:
1. Tetragonal Structure: The anther is a tetragonal structure, which means it has four sides or faces.
2. Microsporangia: Each face of the anther contains a microsporangium, also known as a pollen sac. These microsporangia are responsible for the production and maturation of pollen grains.
3. Pollen Grains: The pollen grains inside the microsporangia represent the male gametophytes. They are produced through a process called microsporogenesis. As the pollen grains mature, the microsporangia get filled with them.
Pollen Grain Aperture:
1. Definition: The pollen grain aperture is the opening or pore present in the pollen grain.
2. Germ Pore: The prominent pollen grain aperture, known as the germ pore, is present in the exine layer of the pollen grain.
3. Exine: The exine is the outermost layer of the pollen grain, which is tough and resistant. It provides protection to the pollen grain during its dispersal and ensures its survival.
Conclusion:
In conclusion, the prominent pollen grain aperture called the germ pore is present in the exine layer of the pollen grain. The exine is the outermost layer of the pollen grain, which is hard and resistant. This aperture allows the pollen tube to emerge during pollination, enabling the male gametes to reach the female reproductive structures of the flower.
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Read the following text and answer the following questions on the basis of the same:A typical anther is bilobed. It is a tetragonal structure consisting of four microsporangia. These microsporangia form pollen sac which on maturity gets filled with a pollen grains. Pollen grains represent the male gametophytes, their cell wall is very hard. Pollen grains of many species cause severe allergies which cause various diseases in human beings.The prominent pollen grain aperture called germ pore is present in:a)Exineb)Intinec)Vegetative celld)Generative cellCorrect answer is option 'A'. Can you explain this answer?
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Read the following text and answer the following questions on the basis of the same:A typical anther is bilobed. It is a tetragonal structure consisting of four microsporangia. These microsporangia form pollen sac which on maturity gets filled with a pollen grains. Pollen grains represent the male gametophytes, their cell wall is very hard. Pollen grains of many species cause severe allergies which cause various diseases in human beings.The prominent pollen grain aperture called germ pore is present in:a)Exineb)Intinec)Vegetative celld)Generative cellCorrect answer is option 'A'. Can you explain this answer? for NEET 2024 is part of NEET preparation. The Question and answers have been prepared according to the NEET exam syllabus. Information about Read the following text and answer the following questions on the basis of the same:A typical anther is bilobed. It is a tetragonal structure consisting of four microsporangia. These microsporangia form pollen sac which on maturity gets filled with a pollen grains. Pollen grains represent the male gametophytes, their cell wall is very hard. Pollen grains of many species cause severe allergies which cause various diseases in human beings.The prominent pollen grain aperture called germ pore is present in:a)Exineb)Intinec)Vegetative celld)Generative cellCorrect answer is option 'A'. Can you explain this answer? covers all topics & solutions for NEET 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Read the following text and answer the following questions on the basis of the same:A typical anther is bilobed. It is a tetragonal structure consisting of four microsporangia. These microsporangia form pollen sac which on maturity gets filled with a pollen grains. Pollen grains represent the male gametophytes, their cell wall is very hard. Pollen grains of many species cause severe allergies which cause various diseases in human beings.The prominent pollen grain aperture called germ pore is present in:a)Exineb)Intinec)Vegetative celld)Generative cellCorrect answer is option 'A'. Can you explain this answer?.
Read the following text and answer the following questions on the basis of the same:A typical anther is bilobed. It is a tetragonal structure consisting of four microsporangia. These microsporangia form pollen sac which on maturity gets filled with a pollen grains. Pollen grains represent the male gametophytes, their cell wall is very hard. Pollen grains of many species cause severe allergies which cause various diseases in human beings.The prominent pollen grain aperture called germ pore is present in:a)Exineb)Intinec)Vegetative celld)Generative cellCorrect answer is option 'A'. Can you explain this answer? for NEET 2024 is part of NEET preparation. The Question and answers have been prepared according to the NEET exam syllabus. Information about Read the following text and answer the following questions on the basis of the same:A typical anther is bilobed. It is a tetragonal structure consisting of four microsporangia. These microsporangia form pollen sac which on maturity gets filled with a pollen grains. Pollen grains represent the male gametophytes, their cell wall is very hard. Pollen grains of many species cause severe allergies which cause various diseases in human beings.The prominent pollen grain aperture called germ pore is present in:a)Exineb)Intinec)Vegetative celld)Generative cellCorrect answer is option 'A'. Can you explain this answer? covers all topics & solutions for NEET 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Read the following text and answer the following questions on the basis of the same:A typical anther is bilobed. It is a tetragonal structure consisting of four microsporangia. These microsporangia form pollen sac which on maturity gets filled with a pollen grains. Pollen grains represent the male gametophytes, their cell wall is very hard. Pollen grains of many species cause severe allergies which cause various diseases in human beings.The prominent pollen grain aperture called germ pore is present in:a)Exineb)Intinec)Vegetative celld)Generative cellCorrect answer is option 'A'. Can you explain this answer?.
Solutions for Read the following text and answer the following questions on the basis of the same:A typical anther is bilobed. It is a tetragonal structure consisting of four microsporangia. These microsporangia form pollen sac which on maturity gets filled with a pollen grains. Pollen grains represent the male gametophytes, their cell wall is very hard. Pollen grains of many species cause severe allergies which cause various diseases in human beings.The prominent pollen grain aperture called germ pore is present in:a)Exineb)Intinec)Vegetative celld)Generative cellCorrect answer is option 'A'. Can you explain this answer? in English & in Hindi are available as part of our courses for NEET.
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