Q.6
ICAR AIEEA PG Horticulture 14 July 2023 Shift-1 Paper (Q.90)
Assertion & Reason +4 −1
English हिन्दी

Given below are two statements, one is labelled as Assertion (A) and other one labelled as Reason (R).

Assertion (A) : Self pollination by natural means is frequent in Vanilla.
Reason (R) : Hand pollination is an important part of vanilla cultivation.

In light of the above statements, choose the most appropriate answer from the options given below.

नीचे दो कथन दिए गए हैं, एक

अभिकथन (A) : और दूसरा कारण है:
अभिकथन (A) : वैनिला में प्राकृतिक साधनों द्वारा स्व-परागण अक्सर होता है।
कारण : हस्त परागण वैनिला की खेती का एक महत्वपूर्ण हिस्सा है।

उपर्युक्त कथनों के आलोक में, नीचे दिए गए विकल्पों में से सबसे उपयुक्त उत्तर चुनें।

EXPLANATION Leguminous Vegetable Crops: Garden Pea, French Bean, Cowpea, Cluster Bean, Dolichos Bean and Winged Bean

Floral biology and pollination mechanisms in vanilla (Vanilla planifolia):

  • Both correct is false because Assertion (A) is incorrect.
  • Both correct is false.
  • Assertion is not correct.
  • is not correct but (R) is correct: Assertion (A) is false because vanilla flowers have a physical barrier called the rostellum (a flap of tissue) positioned directly between the anther and the stigma, preventing natural self-pollination. Reason (R) is true because commercial pod production depends entirely on artificial hand pollination using a bamboo needle or splinter within morning hours of flower opening.

    Option breakdown:
  • Assertion is false.
  • Assertion is false.
  • Assertion is false.
  • Assertion is false and Reason is correct.

वैनिला (वैनिला प्लैनिफोलिया) में परागण कार्यिकी:

  • अभिकथन गलत होने के कारण अमान्य है।
  • अभिकथन गलत होने के कारण अमान्य है।
  • अभिकथन गलत होने के कारण अमान्य है।
  • गलत है लेकिन (R) सही है। अभिकथन (A) असत्य है क्योंकि वैनिला के फूल में परागकोश और वर्तिकाग्र के बीच रोस्टेलम (rostellum) नामक पर्दा होता है जो प्राकृतिक स्व-परागण को पूरी तरह रोकता है। कारण (R) सत्य है क्योंकि व्यावसायिक फलन के लिए बांस की तीली से हस्त परागण करना अनिवार्य होता है।

    विकल्पों का विश्लेषण:
  • गलत है।
  • गलत है।
  • गलत है।
  • अभिकथन असत्य तथा कारण सत्य सही उत्तर है।
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Horticulture विषय एवं अध्याय

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फल विज्ञान, रोपण व मसाला फसलें, सब्जी विज्ञान, तुड़ाई उपरांत प्रबंधन, पुष्प विज्ञान व प्रजनन

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