Home
Class 12
BIOLOGY
A : The first sign of growing foetu...

A : The first sign of growing foetus may be noticed by listening to the heart sound though the stethoscope .
R : By the end of second month of pregnancy the foetus develops limbs and digits .

A

If both Assertion & Reason are true and the reason is the correct explanation of the assertion then mark (1)

B

If both Assertion & Reason are true but the reason is not the correct explanation of the assertion then mark (2)

C

If Assertion is true statement but Reason is false then mark (3)

D

If both Assertion and Reason are false statement then Mark (4)

Text Solution

AI Generated Solution

The correct Answer is:
**Step-by-Step Solution:** 1. **Understanding the Assertion (A):** The assertion states that the first sign of a growing fetus can be detected by listening to the heart sound through a stethoscope. This is true because the presence of a heartbeat is a vital indicator of fetal life and health. **Hint:** Think about how medical professionals confirm the viability of a fetus. 2. **Understanding the Reason (R):** The reason states that by the end of the second month of pregnancy, the fetus develops limbs and digits. This is also true, as significant development occurs during the first trimester, including the formation of limbs and digits. **Hint:** Consider the timeline of fetal development and what major changes occur in the early months. 3. **Analyzing the Relationship Between A and R:** While both the assertion and reason are correct, the reason does not explain the assertion. The development of limbs and digits is a separate aspect of fetal growth and does not directly relate to the detection of a heartbeat. **Hint:** Reflect on whether the reason logically supports the assertion or if they are independent facts. 4. **Conclusion:** Since both the assertion and reason are correct but the reason does not explain the assertion, the correct answer is that both statements are true, but the reason is not the correct explanation for the assertion. **Hint:** Look for options that distinguish between the correctness of the statements and their explanatory relationship. **Final Answer:** Both assertion and reason are correct, but the reason does not correctly explain the assertion. ---
Promotional Banner

Topper's Solved these Questions

  • HUMAN REPRODUCTION

    AAKASH INSTITUTE ENGLISH|Exercise Try Yourself|19 Videos
  • HUMAN REPRODUCTION

    AAKASH INSTITUTE ENGLISH|Exercise Assignment ( Section - C ) (Previous Type Question )|84 Videos
  • EXCRETORY PRODUCTS AND THEIR ELIMINATION

    AAKASH INSTITUTE ENGLISH|Exercise SECTION D ( ASSERTIN-REASON TYPE QUASTION)|10 Videos
  • LOCOMOTION AND MOVEMENT

    AAKASH INSTITUTE ENGLISH|Exercise ASSIGNMENT SECTION-D|10 Videos

Similar Questions

Explore conceptually related problems

First sign of growing foetus that is noticed is

The first sign of growing human foetus in uterus may be noticed by

The first sign of the second month foetus may noticed by listening to the heart sound carefully through the stethoscope . Embryo heart is formed _____.

Go through the following statement (i) Relaxin produced by the ovary, facilitates delivery of the foetus by softening the connective tissue of pubic symphysis and relaxing the pelvic ligaments and joints. (ii) By the end of fifth month of pregnancy, the foetus develops limbs and digits. (iii) Thalidomide is a teratogenic drug which causes a condition called phocomelia. (iv). Although the levels of prolactin are high during pregnancy, milk secretion does not occur because of the high oestrogen and progesterone levels which make the breast unresponsive to the prolactin. Which of these are correct?

Slect the option that correctly fills up the blanks in the given paragraphs After one month of pregnancy the embryo's (i)._____is formed By the end of the (ii)._____month of pregnancy the fetus develops limbs and digits. By the end of (iii)._____most of the major organ systems are formed, for example, the limb and external genital organs are well-developed by the end of (iv)._____the body is covered with fine hair, eye-lids separate, and eyelashed are formed

In the following the duration of intra - uterine life is matched with the events completed. Which of these is matched correctly ? i. End of the first month. Embryo heart is formed. ii. End of the second month: Foetus develops limbs and digits. iii. End of the fifth month : Hair on head iv. End of the sixth month : Eyelashes are formed

Read the statements given below : (i) The first movements of the foetus and appearance of hair on the head are usually observed during 5th months of pregnancy. (ii) The structural and functional unit between developing embryo and the maternal body is called the umbilical cord . (iii) At puberty , in female both ovaries contain about 60,000 –80,000 primary follicles . Choose the correct statement from the above .

Assertion : During pregnancy, development of foetus occurs in stages. Reason: In second month of pregnancy, limbs, most of the organs and external genitalia are formed.

Fill in the blanks: 1. By the end of the ….a… of pregnancy, the foetus develops limbs and digits. 2. By the end of ….b…, the body is covered with fine hair, eye -lids separate and eyelashes are formed. 3. After …c… of pregnancy, the embryo's heart is formed.

AAKASH INSTITUTE ENGLISH-HUMAN REPRODUCTION-Assignment ( Section - D ) (Assertion - Reason Type Question ) (In the following question a statement of assertion (A) is followed by a statement of reason (R )
  1. A : placenta is connected to the embryo through an umbilical cor...

    Text Solution

    |

  2. A : All copulations do not lead to fertilisation and pregnancy ....

    Text Solution

    |

  3. A : Lack of menstruation may be indicative of pregnancy R : ...

    Text Solution

    |

  4. A : LH acts on Sertolic cells for release of certain factors re...

    Text Solution

    |

  5. A : The first sign of growing foetus may be noticed by listeni...

    Text Solution

    |

  6. A: Leyding 's cells synthesise and secrete festicular hormones ca...

    Text Solution

    |

  7. A : In spermatogenesis the first haploid forms are spermatids. R...

    Text Solution

    |

  8. A : Presence or absence of hymen is not a reliable inducator of v...

    Text Solution

    |

  9. A : After menopause the levels of blood gonadotropins will rise ...

    Text Solution

    |

  10. A : The secretions of male accessory glands constitute the semi...

    Text Solution

    |

  11. A : Corpus luteum begins to atrophy after a short life of 10 to ...

    Text Solution

    |

  12. A : Most birds posses only the left ovary and left oviduct for...

    Text Solution

    |

  13. A : The most immediate effect of FSH is the maturation of exis...

    Text Solution

    |

  14. A : The morula passes through the phase of compaction produces ...

    Text Solution

    |

  15. A : Developments is the emergence of a multicellular organism f...

    Text Solution

    |

  16. A : Synthesis of milk is stimulated by rise in the level of ox...

    Text Solution

    |

  17. A : Blastocyst undergoes gastrulation to produce the three germinal...

    Text Solution

    |

  18. A : The scrotum acts as temperature regulator for the testes ...

    Text Solution

    |

  19. A : Fertilin protein is present in the egg membrane R : it help...

    Text Solution

    |

  20. Name two Birth control methods.

    Text Solution

    |