Assertion   :       Size of breasts increases at puberty in human female.

Reason      :       Prolactin secretion starts at puberty.

अभिकथन: स्त्री में यौवनारंभ पर स्तनों का आकार बढ़ जाता है।

कारण: प्रोलैक्टिन का स्राव यौवनारंभ पर शुरू होता है।

  1. If both the assertion and the reason are true and the reason is a correct explanation of the assertion
  2. If both the assertion and reason are true but the reason is not a correct explanation of the assertion
  3. If the assertion is true but the reason is false
  4. If both the assertion and reason are false

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Assertion   :       Vagina acts as copulation canal and fertilization canal.

Reason      :       Both insemination and fusion of gametes occur in vagina of female.

कथन: योनि मैथुन नाल और निषेचन नलिका के रूप में कार्य करती है।

कारण: युग्मकों का युग्मन और वीर्यसेचन दोनों ही स्त्री की योनि में होते हैं।

  1. If both the assertion and the reason are true and the reason is a correct explanation of the assertion
  2. If both the assertion and reason are true but the reason is not a correct explanation of the assertion
  3. If the assertion is true but the reason is false
  4. If both the assertion and reason are false
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Assertion   :       In human male, there are perianal glands near the anus.

Reason      :       Perianal glands secretes sex-attractant pheromone which initiates sexual desire in human female.

कथन:    पुरुष में, गुदा के पास परिगुदीय ग्रंथियाँ होती हैं।

कारण:    परिगुदीय ग्रंथियां सेक्स-आकर्षी फेरोमोन का स्राव करती हैं जो स्त्री में यौन इच्छा का प्रारंभ करता है।

  1. If both the assertion and the reason are true and the reason is a correct explanation of the assertion
  2. If both the assertion and reason are true but the reason is not a correct explanation of the assertion
  3. If the assertion is true but the reason is false
  4. If both the assertion and reason are false
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Assertion   :       Primary spermatocytes of testes are haploid.

Reason      :       Primary spermatocytes are formed by meiosis-I in the spermatogonia.

अभिकथन   :   वृषण की प्राथमिक शुक्राणु कोशिकाएं अगुणित होती हैं।

कारण        :   प्राथमिक शुक्राणु कोशिकाएं शुक्राणुजन में अर्धसूत्री विभाजन I द्वारा बनती हैं।

  1. If both the assertion and the reason are true and the reason is a correct explanation of the assertion
  2. If both the assertion and reason are true but the reason is not a correct explanation of the assertion
  3. If the assertion is true but the reason is false
  4. If both the assertion and reason are false
 54%
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Assertion   :       Spermiation is the transformation of spermatid into sperm.

Reason      :       During spermiation, sperms get nutrition from sertioli cells.

अभिकथन  :  वीर्यसेचन शुक्राणु-प्रसू से शुक्राणु का रूपांतरण होता है।

कारण   :    वीर्यसेचन के मध्य, शुक्राणु को सेर्टोली कोशिकाओं से पोषण मिलता है।

  1. If both the assertion and the reason are true and the reason is a correct explanation of the assertion
  2. If both the assertion and reason are true but the reason is not a correct explanation of the assertion
  3. If the assertion is true but the reason is false
  4. If both the assertion and reason are false
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Assertion            :       During fertilization only head of spermatozoa enters egg.

Reason               :       If several spermatozoa hit the egg at same time, all can enter the egg.

कथन:      निषेचन के मध्य केवल शुक्राणुओं का सिर अंडे में प्रवेश करता है।

कारण :    यदि एक ही समय में कई शुक्राणु अंडे से टकराते हैं, तो सभी अंडे में प्रवेश कर सकते हैं।

  1. If both the assertion and the reason are true and the reason is a correct explanation of the assertion
  2. If both the assertion and reason are true but the reason is not a correct explanation of the assertion
  3. If the assertion is true but the reason is false
  4. If both the assertion and reason are false
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Assertion             :       In morula stage, cells divide without increase in size.

Reason                 :      Zona pellucida remain undivided till cleavage is complete.

अभिकथन: कलल प्रावस्था में, कोशिकाएं आकार में वृद्धि के बिना विभाजित होती हैं।

कारण : जब तक विदलन पूरा नहीं हो जाता तब तक पारदर्शी अंडावरण अविभाजित रहता है।

  1. If both the assertion and the reason are true and the reason is a correct explanation of the assertion
  2. If both the assertion and reason are true but the reason is not a correct explanation of the assertion
  3. If the assertion is true but the reason is false
  4. If both the assertion and reason are false
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Assertion   :       Holoblastic cleavage with almost equal sized blastomeres is a characteristic of placental animals.

Reason      :      Eggs of most mammals, including humans, are of centrolecithal type

कथन: लगभग समान आकार के कोरकखंड के साथ पूर्णभंजी विदलन, अपरा जंतुओं की एक विशेषता है।

कारण: मनुष्यों सहित अधिकांश स्तनधारियों के अंडे केंद्रपीतकी प्रकार के होते हैं

  1. If both the assertion and the reason are true and the reason is a correct explanation of the assertion
  2. If both the assertion and reason are true but the reason is not a correct explanation of the assertion
  3. If the assertion is true but the reason is false
  4. If both the assertion and reason are false
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Humans are
a. Oviparous females
b. Sexually Reproducing
c. Considered to be sexually active before puberty
d. More than one option is correct

मनुष्य होते हैं
a. अंडज मादायें
b. लैंगिक प्रजनक
c. यौवनारंभ से पहले लैंगिक रूप से सक्रिय माना जाता है।
d. एक से अधिक विकल्प सही है।

From NCERT
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Which of the following order is not correct for the events of human reproduction?

(1) Gametogenesis- Insemination- Fertilization

(2) Fertilization-Insemination- Gametogenesis

(3) Implantation-Gestation-Parturition

(4) Insemination-Fertilization- implantation

निम्नलिखित में से कौन सा क्रम मानव जनन की घटनाओं के लिए सही नहीं है?

युग्मकजनन- वीर्यसेचन- निषेचन

निषेचन-वीर्यसेचन- युग्मकजनन

अंतर्रोपण-सगर्भता-प्रसव

वीर्यसेचन-निषेचन-अंतर्रोपण

From NCERT
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