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Test: Sexual Reproduction In Humans - Class 10 MCQ


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5 Questions MCQ Test - Test: Sexual Reproduction In Humans

Test: Sexual Reproduction In Humans for Class 10 2024 is part of Class 10 preparation. The Test: Sexual Reproduction In Humans questions and answers have been prepared according to the Class 10 exam syllabus.The Test: Sexual Reproduction In Humans MCQs are made for Class 10 2024 Exam. Find important definitions, questions, notes, meanings, examples, exercises, MCQs and online tests for Test: Sexual Reproduction In Humans below.
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Test: Sexual Reproduction In Humans - Question 1
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The changes in which layer or membrane of ovum check the entry of additional (more than one) sperms?

Detailed Solution for Test: Sexual Reproduction In Humans - Question 1

The zona pellucida layer of the ovum shows certain changes after the penetration of sperm and thus checks the entry of additional sperms. 

Test: Sexual Reproduction In Humans - Question 2
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Sperm transfer in males can be prevented by blocking the:

Detailed Solution for Test: Sexual Reproduction In Humans - Question 2

The sperm produced in testis and travel through Vas deferns to come out through urethra, so we block vas deferns to prevent the flow of sperm.

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Test: Sexual Reproduction In Humans - Question 3
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What is the average time interval for the repetition of menstrual cycle in females?

Detailed Solution for Test: Sexual Reproduction In Humans - Question 3

After every 28-30 days a mature ovum is released by ovary and wait for sperm to get fertilized. In case the fertilization does not takes place the uterine wall breaks and ovum comes out of vagina as blood. It is known as menstruation.

Test: Sexual Reproduction In Humans - Question 4
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Which of the following connects placenta to embryo?
Detailed Solution for Test: Sexual Reproduction In Humans - Question 4

The fetus is connected to the placenta through the umbilical cord, a tube that contains two arteries and a vein. Blood from the fetus enters the placenta through the umbilical arteries, exchange gases and other substances with the mother's blood, and travels back to the fetus through the umbilical vein.

Test: Sexual Reproduction In Humans - Question 5
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After a period of weeks, the development of almost all major organs of an embryo has occurred.
Detailed Solution for Test: Sexual Reproduction In Humans - Question 5

Correct Answer :- c

Explanation : Almost all organs are completely formed by about 10 weeks after fertilization (which equals 12 weeks of pregnancy). The exceptions are the brain and spinal cord, which continue to form and develop throughout pregnancy. Most malformations (birth defects) occur during the period when organs are forming.

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