Class 11 Exam > Class 11 Questions > Nephrostome is found in earthworm in[BHU- 79]...
Start Learning for Free
Nephrostome is found in earthworm in
[BHU- 79]
- a)Septal nephridia
- b)Pharyngeal nephridia
- c)Integumentary nephridia
- d)All
Correct answer is option 'A'. Can you explain this answer?
| FREE This question is part of | Download PDF Attempt this Test |
Verified Answer
Nephrostome is found in earthworm in[BHU- 79]a)Septal nephridiab)Phary...
Ans.
Option (a)
These are found situated on the inter-seg�mental septum between 15th and 16th segments to the posterior side of the body.
Each septum bears nephridia on both the surfaces arranged in semicircles around the intestine, two rows in front of the septum and two behind it. Each septum has about 40 to 50 nephridia in front and the same number behind, so that each segment possesses 80 to 100 septal nephridia except the 15th segment which has only 40 to 50 nephridia. These are not found in the segments up to 14th.
Each septum bears nephridia on both the surfaces arranged in semicircles around the intestine, two rows in front of the septum and two behind it. Each septum has about 40 to 50 nephridia in front and the same number behind, so that each segment possesses 80 to 100 septal nephridia except the 15th segment which has only 40 to 50 nephridia. These are not found in the segments up to 14th.
Most Upvoted Answer
Nephrostome is found in earthworm in[BHU- 79]a)Septal nephridiab)Phary...
Nephrostome is found in earthworm in septal nephridia.
Septal Nephridia in Earthworms
------------------------------
Earthworms have a well-developed excretory system that helps in the elimination of waste products from their body. One of the components of this system is the nephridia, which are excretory tubules responsible for filtering waste materials and maintaining osmotic balance.
Nephrostome and Nephridiopore
------------------------------
The nephridia in earthworms consist of three main parts: nephrostome, tubule, and nephridiopore. The nephrostome is a ciliated funnel-like structure present in each segment of the earthworm's body. It acts as the opening or entrance of the nephridium and is responsible for the filtration of waste materials from the coelomic fluid.
Function of Nephrostome
-----------------------
The nephrostomes in the septal nephridia of earthworms help in the initial filtration of waste products from the coelomic fluid. Coelomic fluid is the fluid present in the body cavity of earthworms, which contains waste materials such as nitrogenous waste.
The nephrostomes have cilia that create a current, allowing the coelomic fluid to enter the nephridia. As the fluid flows through the nephridium, useful substances like water, ions, and nutrients are reabsorbed, while waste materials are retained for excretion.
Nephridiopore and Excretion
---------------------------
After the filtration and reabsorption processes, the waste materials are eliminated from the earthworm's body through the nephridiopores. These are small openings located on the ventral side of each segment. The nephridiopores act as the exit points for the filtered waste materials, which are then released into the environment.
Conclusion
----------
In conclusion, the nephrostome is found in the septal nephridia of earthworms. It acts as the entrance or opening for the filtration of waste materials from the coelomic fluid. The nephridia system in earthworms is essential for maintaining osmotic balance and eliminating waste products from their body.
Septal Nephridia in Earthworms
------------------------------
Earthworms have a well-developed excretory system that helps in the elimination of waste products from their body. One of the components of this system is the nephridia, which are excretory tubules responsible for filtering waste materials and maintaining osmotic balance.
Nephrostome and Nephridiopore
------------------------------
The nephridia in earthworms consist of three main parts: nephrostome, tubule, and nephridiopore. The nephrostome is a ciliated funnel-like structure present in each segment of the earthworm's body. It acts as the opening or entrance of the nephridium and is responsible for the filtration of waste materials from the coelomic fluid.
Function of Nephrostome
-----------------------
The nephrostomes in the septal nephridia of earthworms help in the initial filtration of waste products from the coelomic fluid. Coelomic fluid is the fluid present in the body cavity of earthworms, which contains waste materials such as nitrogenous waste.
The nephrostomes have cilia that create a current, allowing the coelomic fluid to enter the nephridia. As the fluid flows through the nephridium, useful substances like water, ions, and nutrients are reabsorbed, while waste materials are retained for excretion.
Nephridiopore and Excretion
---------------------------
After the filtration and reabsorption processes, the waste materials are eliminated from the earthworm's body through the nephridiopores. These are small openings located on the ventral side of each segment. The nephridiopores act as the exit points for the filtered waste materials, which are then released into the environment.
Conclusion
----------
In conclusion, the nephrostome is found in the septal nephridia of earthworms. It acts as the entrance or opening for the filtration of waste materials from the coelomic fluid. The nephridia system in earthworms is essential for maintaining osmotic balance and eliminating waste products from their body.
Attention Class 11 Students!
To make sure you are not studying endlessly, EduRev has designed Class 11 study material, with Structured Courses, Videos, & Test Series. Plus get personalized analysis, doubt solving and improvement plans to achieve a great score in Class 11.
|
Explore Courses for Class 11 exam
|
|
Similar Class 11 Doubts
Top Courses for Class 11View all
Nephrostome is found in earthworm in[BHU- 79]a)Septal nephridiab)Pharyngeal nephridiac)Integumentary nephridia d)AllCorrect answer is option 'A'. Can you explain this answer?
Question Description
Nephrostome is found in earthworm in[BHU- 79]a)Septal nephridiab)Pharyngeal nephridiac)Integumentary nephridia d)AllCorrect answer is option 'A'. Can you explain this answer? for Class 11 2024 is part of Class 11 preparation. The Question and answers have been prepared according to the Class 11 exam syllabus. Information about Nephrostome is found in earthworm in[BHU- 79]a)Septal nephridiab)Pharyngeal nephridiac)Integumentary nephridia d)AllCorrect answer is option 'A'. Can you explain this answer? covers all topics & solutions for Class 11 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Nephrostome is found in earthworm in[BHU- 79]a)Septal nephridiab)Pharyngeal nephridiac)Integumentary nephridia d)AllCorrect answer is option 'A'. Can you explain this answer?.
Nephrostome is found in earthworm in[BHU- 79]a)Septal nephridiab)Pharyngeal nephridiac)Integumentary nephridia d)AllCorrect answer is option 'A'. Can you explain this answer? for Class 11 2024 is part of Class 11 preparation. The Question and answers have been prepared according to the Class 11 exam syllabus. Information about Nephrostome is found in earthworm in[BHU- 79]a)Septal nephridiab)Pharyngeal nephridiac)Integumentary nephridia d)AllCorrect answer is option 'A'. Can you explain this answer? covers all topics & solutions for Class 11 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Nephrostome is found in earthworm in[BHU- 79]a)Septal nephridiab)Pharyngeal nephridiac)Integumentary nephridia d)AllCorrect answer is option 'A'. Can you explain this answer?.
Solutions for Nephrostome is found in earthworm in[BHU- 79]a)Septal nephridiab)Pharyngeal nephridiac)Integumentary nephridia d)AllCorrect answer is option 'A'. Can you explain this answer? in English & in Hindi are available as part of our courses for Class 11.
Download more important topics, notes, lectures and mock test series for Class 11 Exam by signing up for free.
Here you can find the meaning of Nephrostome is found in earthworm in[BHU- 79]a)Septal nephridiab)Pharyngeal nephridiac)Integumentary nephridia d)AllCorrect answer is option 'A'. Can you explain this answer? defined & explained in the simplest way possible. Besides giving the explanation of
Nephrostome is found in earthworm in[BHU- 79]a)Septal nephridiab)Pharyngeal nephridiac)Integumentary nephridia d)AllCorrect answer is option 'A'. Can you explain this answer?, a detailed solution for Nephrostome is found in earthworm in[BHU- 79]a)Septal nephridiab)Pharyngeal nephridiac)Integumentary nephridia d)AllCorrect answer is option 'A'. Can you explain this answer? has been provided alongside types of Nephrostome is found in earthworm in[BHU- 79]a)Septal nephridiab)Pharyngeal nephridiac)Integumentary nephridia d)AllCorrect answer is option 'A'. Can you explain this answer? theory, EduRev gives you an
ample number of questions to practice Nephrostome is found in earthworm in[BHU- 79]a)Septal nephridiab)Pharyngeal nephridiac)Integumentary nephridia d)AllCorrect answer is option 'A'. Can you explain this answer? tests, examples and also practice Class 11 tests.
|
|
Explore Courses for Class 11 exam
|
|
Suggested Free Tests
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