NEET Exam > NEET Questions > Assertion: The innermost layer of microsporan...
Start Learning for Free
Assertion: The innermost layer of microsporangium is called tapetum.
Reason: Tapetum performs the function of protection and help in dehiscence of anther to release pollen grains.
Reason: Tapetum performs the function of protection and help in dehiscence of anther to release pollen grains.
- a)Assertion is correct but reason is incorrect.
- b)Both assertion and reason are incorrect.
- c)Assertion is correct but reason does not explain it.
- d)Both assertion and reason are correct.
Correct answer is option 'A'. Can you explain this answer?
Most Upvoted Answer
Assertion: The innermost layer of microsporangium is called tapetum.Re...
Microsporangium is surrounded by four wall layers. The innermost layer is tapetum. Tapetum nourishes the developing pollens. The three outer walls provide protection and help in dehiscence of anther to release pollen grains.
Community Answer
Assertion: The innermost layer of microsporangium is called tapetum.Re...
Assertion: The innermost layer of microsporangium is called tapetum.
Reason: Tapetum performs the function of protection and help in dehiscence of anther to release pollen grains.
The correct answer is option A.
Explanation:
Microsporangium:
- A microsporangium is a structure found in the anther of a flower. It is responsible for the production of microspores, which develop into pollen grains.
- The anther contains four microsporangia, also known as pollen sacs, that are located at the tip of the stamen.
Tapetum:
- The tapetum is the innermost layer of cells within the microsporangium.
- It is a nutritive tissue that surrounds the developing microspores and helps in their growth and maturation.
- The tapetum provides nourishment to the developing pollen grains by supplying them with essential nutrients, such as proteins, lipids, and carbohydrates.
- It also plays a role in the production of the pollen coat, which helps in the adhesion of pollen grains to the stigma of the flower.
Function of Tapetum:
- The tapetum performs several functions in the development of pollen grains:
1. Nutrient supply: The tapetum supplies essential nutrients to the developing pollen grains, ensuring their proper growth and maturation.
2. Protection: The tapetum acts as a protective layer around the developing pollen grains, shielding them from external environmental factors that may be detrimental to their development.
3. Degradation: As the pollen grains mature, the tapetum undergoes programmed cell death and is degraded. This process releases enzymes and enzymes that aid in the final development and release of the pollen grains.
4. Pollen coat production: The tapetum is involved in the production of the pollen coat, which is a sticky substance that helps in the adhesion of pollen grains to the stigma of the flower.
Explanation of the Assertion:
- The assertion that the innermost layer of the microsporangium is called tapetum is correct.
- The tapetum is indeed the innermost layer of cells within the microsporangium.
Explanation of the Reason:
- The reason given that the tapetum performs the function of protection and helps in the dehiscence of the anther to release pollen grains is incorrect.
- Although the tapetum does provide protection to the developing pollen grains, it does not directly aid in the dehiscence of the anther.
- The dehiscence of the anther is primarily controlled by other tissues and factors such as the splitting of the endothecium and changes in humidity and temperature.
Therefore, the assertion is correct, but the reason is incorrect.
Reason: Tapetum performs the function of protection and help in dehiscence of anther to release pollen grains.
The correct answer is option A.
Explanation:
Microsporangium:
- A microsporangium is a structure found in the anther of a flower. It is responsible for the production of microspores, which develop into pollen grains.
- The anther contains four microsporangia, also known as pollen sacs, that are located at the tip of the stamen.
Tapetum:
- The tapetum is the innermost layer of cells within the microsporangium.
- It is a nutritive tissue that surrounds the developing microspores and helps in their growth and maturation.
- The tapetum provides nourishment to the developing pollen grains by supplying them with essential nutrients, such as proteins, lipids, and carbohydrates.
- It also plays a role in the production of the pollen coat, which helps in the adhesion of pollen grains to the stigma of the flower.
Function of Tapetum:
- The tapetum performs several functions in the development of pollen grains:
1. Nutrient supply: The tapetum supplies essential nutrients to the developing pollen grains, ensuring their proper growth and maturation.
2. Protection: The tapetum acts as a protective layer around the developing pollen grains, shielding them from external environmental factors that may be detrimental to their development.
3. Degradation: As the pollen grains mature, the tapetum undergoes programmed cell death and is degraded. This process releases enzymes and enzymes that aid in the final development and release of the pollen grains.
4. Pollen coat production: The tapetum is involved in the production of the pollen coat, which is a sticky substance that helps in the adhesion of pollen grains to the stigma of the flower.
Explanation of the Assertion:
- The assertion that the innermost layer of the microsporangium is called tapetum is correct.
- The tapetum is indeed the innermost layer of cells within the microsporangium.
Explanation of the Reason:
- The reason given that the tapetum performs the function of protection and helps in the dehiscence of the anther to release pollen grains is incorrect.
- Although the tapetum does provide protection to the developing pollen grains, it does not directly aid in the dehiscence of the anther.
- The dehiscence of the anther is primarily controlled by other tissues and factors such as the splitting of the endothecium and changes in humidity and temperature.
Therefore, the assertion is correct, but the reason is incorrect.
|
Explore Courses for NEET exam
|
|
Similar NEET Doubts
Top Courses for NEETView all
Assertion: The innermost layer of microsporangium is called tapetum.Reason: Tapetum performs the function of protection and help in dehiscence of anther to release pollen grains. a)Assertion is correct but reason is incorrect.b)Both assertion and reason are incorrect.c)Assertion is correct but reason does not explain it.d)Both assertion and reason are correct.Correct answer is option 'A'. Can you explain this answer?
Question Description
Assertion: The innermost layer of microsporangium is called tapetum.Reason: Tapetum performs the function of protection and help in dehiscence of anther to release pollen grains. a)Assertion is correct but reason is incorrect.b)Both assertion and reason are incorrect.c)Assertion is correct but reason does not explain it.d)Both assertion and reason are correct.Correct answer is option 'A'. Can you explain this answer? for NEET 2025 is part of NEET preparation. The Question and answers have been prepared according to the NEET exam syllabus. Information about Assertion: The innermost layer of microsporangium is called tapetum.Reason: Tapetum performs the function of protection and help in dehiscence of anther to release pollen grains. a)Assertion is correct but reason is incorrect.b)Both assertion and reason are incorrect.c)Assertion is correct but reason does not explain it.d)Both assertion and reason are correct.Correct answer is option 'A'. Can you explain this answer? covers all topics & solutions for NEET 2025 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Assertion: The innermost layer of microsporangium is called tapetum.Reason: Tapetum performs the function of protection and help in dehiscence of anther to release pollen grains. a)Assertion is correct but reason is incorrect.b)Both assertion and reason are incorrect.c)Assertion is correct but reason does not explain it.d)Both assertion and reason are correct.Correct answer is option 'A'. Can you explain this answer?.
Assertion: The innermost layer of microsporangium is called tapetum.Reason: Tapetum performs the function of protection and help in dehiscence of anther to release pollen grains. a)Assertion is correct but reason is incorrect.b)Both assertion and reason are incorrect.c)Assertion is correct but reason does not explain it.d)Both assertion and reason are correct.Correct answer is option 'A'. Can you explain this answer? for NEET 2025 is part of NEET preparation. The Question and answers have been prepared according to the NEET exam syllabus. Information about Assertion: The innermost layer of microsporangium is called tapetum.Reason: Tapetum performs the function of protection and help in dehiscence of anther to release pollen grains. a)Assertion is correct but reason is incorrect.b)Both assertion and reason are incorrect.c)Assertion is correct but reason does not explain it.d)Both assertion and reason are correct.Correct answer is option 'A'. Can you explain this answer? covers all topics & solutions for NEET 2025 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Assertion: The innermost layer of microsporangium is called tapetum.Reason: Tapetum performs the function of protection and help in dehiscence of anther to release pollen grains. a)Assertion is correct but reason is incorrect.b)Both assertion and reason are incorrect.c)Assertion is correct but reason does not explain it.d)Both assertion and reason are correct.Correct answer is option 'A'. Can you explain this answer?.
Solutions for Assertion: The innermost layer of microsporangium is called tapetum.Reason: Tapetum performs the function of protection and help in dehiscence of anther to release pollen grains. a)Assertion is correct but reason is incorrect.b)Both assertion and reason are incorrect.c)Assertion is correct but reason does not explain it.d)Both assertion and reason are correct.Correct answer is option 'A'. Can you explain this answer? in English & in Hindi are available as part of our courses for NEET.
Download more important topics, notes, lectures and mock test series for NEET Exam by signing up for free.
Here you can find the meaning of Assertion: The innermost layer of microsporangium is called tapetum.Reason: Tapetum performs the function of protection and help in dehiscence of anther to release pollen grains. a)Assertion is correct but reason is incorrect.b)Both assertion and reason are incorrect.c)Assertion is correct but reason does not explain it.d)Both assertion and reason are correct.Correct answer is option 'A'. Can you explain this answer? defined & explained in the simplest way possible. Besides giving the explanation of
Assertion: The innermost layer of microsporangium is called tapetum.Reason: Tapetum performs the function of protection and help in dehiscence of anther to release pollen grains. a)Assertion is correct but reason is incorrect.b)Both assertion and reason are incorrect.c)Assertion is correct but reason does not explain it.d)Both assertion and reason are correct.Correct answer is option 'A'. Can you explain this answer?, a detailed solution for Assertion: The innermost layer of microsporangium is called tapetum.Reason: Tapetum performs the function of protection and help in dehiscence of anther to release pollen grains. a)Assertion is correct but reason is incorrect.b)Both assertion and reason are incorrect.c)Assertion is correct but reason does not explain it.d)Both assertion and reason are correct.Correct answer is option 'A'. Can you explain this answer? has been provided alongside types of Assertion: The innermost layer of microsporangium is called tapetum.Reason: Tapetum performs the function of protection and help in dehiscence of anther to release pollen grains. a)Assertion is correct but reason is incorrect.b)Both assertion and reason are incorrect.c)Assertion is correct but reason does not explain it.d)Both assertion and reason are correct.Correct answer is option 'A'. Can you explain this answer? theory, EduRev gives you an
ample number of questions to practice Assertion: The innermost layer of microsporangium is called tapetum.Reason: Tapetum performs the function of protection and help in dehiscence of anther to release pollen grains. a)Assertion is correct but reason is incorrect.b)Both assertion and reason are incorrect.c)Assertion is correct but reason does not explain it.d)Both assertion and reason are correct.Correct answer is option 'A'. Can you explain this answer? tests, examples and also practice NEET tests.
|
|
Explore Courses for NEET exam
|
|
Signup for Free!
Signup to see your scores go up within 7 days! Learn & Practice with 1000+ FREE Notes, Videos & Tests.
|
© EduRev
|
Education Revolution
|
|
Signup to see your scores
go up within 7 days!
Access 1000+ FREE Docs, Videos and Tests
Takes less than 10 seconds to signup