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Directions: In the following questions, a statement of assertion (A) is followed by a statement of reason (R). Mark the correct choice as:
Assertion : During fertilization only the head of spermatozoa enters the egg.
Reason : If several spermatozoa hit the egg at same time, all can enter the egg.
- a)Both assertion (A) and reason (R) are true and reason (R) is the correct explanation of assertion (A).
- b)Both assertion (A) and reason (R) are true but reason (R) is not the correct explanation of assertion (A).
- c)Assertion (A) is true but reason (R) is false.
- d)Assertion (A) is false but reason (R) is true.
- e)Both Assertion and Reason are false.
Correct answer is option 'C'. Can you explain this answer?
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Directions: In the following questions, a statement of assertion (A) ...
During fertilization, only one sperm head enters into ovum and remaining parts of body degenerates. If several spermatozoa hit the egg at same time, even then only one cal get entry into egg because after entry of one sperm, the egg becomes impervious to other sperms.
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Directions: In the following questions, a statement of assertion (A) ...
Assertion : During fertilization only the head of spermatozoa enters the egg.
Reason : If several spermatozoa hit the egg at the same time, all can enter the egg.
Explanation:
During fertilization, when the sperm reaches the egg, only the head of the spermatozoa enters the egg. This is because the sperm is specifically designed to penetrate the egg and deliver its genetic material. The head of the sperm contains the genetic material in the form of chromosomes, which will combine with the genetic material of the egg to form a new individual.
The reason given for this assertion is that if several spermatozoa hit the egg at the same time, all can enter the egg. However, this reason is incorrect. In reality, only one spermatozoon can successfully fertilize the egg.
- The head of the sperm contains enzymes that help it penetrate the outer layers of the egg. These enzymes break down the protective layers of the egg, allowing the sperm to enter.
- Once inside the egg, the head of the sperm fuses with the egg's nucleus, combining their genetic material.
- After fertilization, a protective layer called the zona pellucida forms around the fertilized egg, preventing any additional sperm from entering.
Therefore, the correct option is C) Assertion (A) is true but reason (R) is false. Only one spermatozoon can successfully enter and fertilize the egg, while the remaining spermatozoa are prevented from entering by the zona pellucida.
Reason : If several spermatozoa hit the egg at the same time, all can enter the egg.
Explanation:
During fertilization, when the sperm reaches the egg, only the head of the spermatozoa enters the egg. This is because the sperm is specifically designed to penetrate the egg and deliver its genetic material. The head of the sperm contains the genetic material in the form of chromosomes, which will combine with the genetic material of the egg to form a new individual.
The reason given for this assertion is that if several spermatozoa hit the egg at the same time, all can enter the egg. However, this reason is incorrect. In reality, only one spermatozoon can successfully fertilize the egg.
- The head of the sperm contains enzymes that help it penetrate the outer layers of the egg. These enzymes break down the protective layers of the egg, allowing the sperm to enter.
- Once inside the egg, the head of the sperm fuses with the egg's nucleus, combining their genetic material.
- After fertilization, a protective layer called the zona pellucida forms around the fertilized egg, preventing any additional sperm from entering.
Therefore, the correct option is C) Assertion (A) is true but reason (R) is false. Only one spermatozoon can successfully enter and fertilize the egg, while the remaining spermatozoa are prevented from entering by the zona pellucida.
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Directions: In the following questions, a statement of assertion (A) is followed by a statement of reason (R). Mark the correct choice as:Assertion : During fertilization only the head of spermatozoa enters the egg.Reason : If several spermatozoa hit the egg at same time, all can enter the egg.a)Both assertion (A) and reason (R) are true and reason (R) is the correct explanation of assertion (A).b)Both assertion (A) and reason (R) are true but reason (R) is not the correct explanation of assertion (A).c)Assertion (A) is true but reason (R) is false.d)Assertion (A) is false but reason (R) is true.e)Both Assertion and Reason are false.Correct answer is option 'C'. Can you explain this answer?
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Directions: In the following questions, a statement of assertion (A) is followed by a statement of reason (R). Mark the correct choice as:Assertion : During fertilization only the head of spermatozoa enters the egg.Reason : If several spermatozoa hit the egg at same time, all can enter the egg.a)Both assertion (A) and reason (R) are true and reason (R) is the correct explanation of assertion (A).b)Both assertion (A) and reason (R) are true but reason (R) is not the correct explanation of assertion (A).c)Assertion (A) is true but reason (R) is false.d)Assertion (A) is false but reason (R) is true.e)Both Assertion and Reason are false.Correct answer is option 'C'. Can you explain this answer? for Class 10 2024 is part of Class 10 preparation. The Question and answers have been prepared according to the Class 10 exam syllabus. Information about Directions: In the following questions, a statement of assertion (A) is followed by a statement of reason (R). Mark the correct choice as:Assertion : During fertilization only the head of spermatozoa enters the egg.Reason : If several spermatozoa hit the egg at same time, all can enter the egg.a)Both assertion (A) and reason (R) are true and reason (R) is the correct explanation of assertion (A).b)Both assertion (A) and reason (R) are true but reason (R) is not the correct explanation of assertion (A).c)Assertion (A) is true but reason (R) is false.d)Assertion (A) is false but reason (R) is true.e)Both Assertion and Reason are false.Correct answer is option 'C'. Can you explain this answer? covers all topics & solutions for Class 10 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Directions: In the following questions, a statement of assertion (A) is followed by a statement of reason (R). Mark the correct choice as:Assertion : During fertilization only the head of spermatozoa enters the egg.Reason : If several spermatozoa hit the egg at same time, all can enter the egg.a)Both assertion (A) and reason (R) are true and reason (R) is the correct explanation of assertion (A).b)Both assertion (A) and reason (R) are true but reason (R) is not the correct explanation of assertion (A).c)Assertion (A) is true but reason (R) is false.d)Assertion (A) is false but reason (R) is true.e)Both Assertion and Reason are false.Correct answer is option 'C'. Can you explain this answer?.
Directions: In the following questions, a statement of assertion (A) is followed by a statement of reason (R). Mark the correct choice as:Assertion : During fertilization only the head of spermatozoa enters the egg.Reason : If several spermatozoa hit the egg at same time, all can enter the egg.a)Both assertion (A) and reason (R) are true and reason (R) is the correct explanation of assertion (A).b)Both assertion (A) and reason (R) are true but reason (R) is not the correct explanation of assertion (A).c)Assertion (A) is true but reason (R) is false.d)Assertion (A) is false but reason (R) is true.e)Both Assertion and Reason are false.Correct answer is option 'C'. Can you explain this answer? for Class 10 2024 is part of Class 10 preparation. The Question and answers have been prepared according to the Class 10 exam syllabus. Information about Directions: In the following questions, a statement of assertion (A) is followed by a statement of reason (R). Mark the correct choice as:Assertion : During fertilization only the head of spermatozoa enters the egg.Reason : If several spermatozoa hit the egg at same time, all can enter the egg.a)Both assertion (A) and reason (R) are true and reason (R) is the correct explanation of assertion (A).b)Both assertion (A) and reason (R) are true but reason (R) is not the correct explanation of assertion (A).c)Assertion (A) is true but reason (R) is false.d)Assertion (A) is false but reason (R) is true.e)Both Assertion and Reason are false.Correct answer is option 'C'. Can you explain this answer? covers all topics & solutions for Class 10 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Directions: In the following questions, a statement of assertion (A) is followed by a statement of reason (R). Mark the correct choice as:Assertion : During fertilization only the head of spermatozoa enters the egg.Reason : If several spermatozoa hit the egg at same time, all can enter the egg.a)Both assertion (A) and reason (R) are true and reason (R) is the correct explanation of assertion (A).b)Both assertion (A) and reason (R) are true but reason (R) is not the correct explanation of assertion (A).c)Assertion (A) is true but reason (R) is false.d)Assertion (A) is false but reason (R) is true.e)Both Assertion and Reason are false.Correct answer is option 'C'. Can you explain this answer?.
Solutions for Directions: In the following questions, a statement of assertion (A) is followed by a statement of reason (R). Mark the correct choice as:Assertion : During fertilization only the head of spermatozoa enters the egg.Reason : If several spermatozoa hit the egg at same time, all can enter the egg.a)Both assertion (A) and reason (R) are true and reason (R) is the correct explanation of assertion (A).b)Both assertion (A) and reason (R) are true but reason (R) is not the correct explanation of assertion (A).c)Assertion (A) is true but reason (R) is false.d)Assertion (A) is false but reason (R) is true.e)Both Assertion and Reason are false.Correct answer is option 'C'. Can you explain this answer? in English & in Hindi are available as part of our courses for Class 10.
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Here you can find the meaning of Directions: In the following questions, a statement of assertion (A) is followed by a statement of reason (R). Mark the correct choice as:Assertion : During fertilization only the head of spermatozoa enters the egg.Reason : If several spermatozoa hit the egg at same time, all can enter the egg.a)Both assertion (A) and reason (R) are true and reason (R) is the correct explanation of assertion (A).b)Both assertion (A) and reason (R) are true but reason (R) is not the correct explanation of assertion (A).c)Assertion (A) is true but reason (R) is false.d)Assertion (A) is false but reason (R) is true.e)Both Assertion and Reason are false.Correct answer is option 'C'. Can you explain this answer? defined & explained in the simplest way possible. Besides giving the explanation of
Directions: In the following questions, a statement of assertion (A) is followed by a statement of reason (R). Mark the correct choice as:Assertion : During fertilization only the head of spermatozoa enters the egg.Reason : If several spermatozoa hit the egg at same time, all can enter the egg.a)Both assertion (A) and reason (R) are true and reason (R) is the correct explanation of assertion (A).b)Both assertion (A) and reason (R) are true but reason (R) is not the correct explanation of assertion (A).c)Assertion (A) is true but reason (R) is false.d)Assertion (A) is false but reason (R) is true.e)Both Assertion and Reason are false.Correct answer is option 'C'. Can you explain this answer?, a detailed solution for Directions: In the following questions, a statement of assertion (A) is followed by a statement of reason (R). Mark the correct choice as:Assertion : During fertilization only the head of spermatozoa enters the egg.Reason : If several spermatozoa hit the egg at same time, all can enter the egg.a)Both assertion (A) and reason (R) are true and reason (R) is the correct explanation of assertion (A).b)Both assertion (A) and reason (R) are true but reason (R) is not the correct explanation of assertion (A).c)Assertion (A) is true but reason (R) is false.d)Assertion (A) is false but reason (R) is true.e)Both Assertion and Reason are false.Correct answer is option 'C'. Can you explain this answer? has been provided alongside types of Directions: In the following questions, a statement of assertion (A) is followed by a statement of reason (R). Mark the correct choice as:Assertion : During fertilization only the head of spermatozoa enters the egg.Reason : If several spermatozoa hit the egg at same time, all can enter the egg.a)Both assertion (A) and reason (R) are true and reason (R) is the correct explanation of assertion (A).b)Both assertion (A) and reason (R) are true but reason (R) is not the correct explanation of assertion (A).c)Assertion (A) is true but reason (R) is false.d)Assertion (A) is false but reason (R) is true.e)Both Assertion and Reason are false.Correct answer is option 'C'. Can you explain this answer? theory, EduRev gives you an
ample number of questions to practice Directions: In the following questions, a statement of assertion (A) is followed by a statement of reason (R). Mark the correct choice as:Assertion : During fertilization only the head of spermatozoa enters the egg.Reason : If several spermatozoa hit the egg at same time, all can enter the egg.a)Both assertion (A) and reason (R) are true and reason (R) is the correct explanation of assertion (A).b)Both assertion (A) and reason (R) are true but reason (R) is not the correct explanation of assertion (A).c)Assertion (A) is true but reason (R) is false.d)Assertion (A) is false but reason (R) is true.e)Both Assertion and Reason are false.Correct answer is option 'C'. Can you explain this answer? tests, examples and also practice Class 10 tests.
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