वनस्पति विज्ञान – Botany – Botany MCQ
वनस्पति विज्ञान – Botany – CEE प्रवेश
Botany · Medical Entrance (CEE) – Physics, Chemistry, Biology & MAT · ४०७ प्रश्न
४०७ प्रश्न उपलब्ध। मोड छान्नुहोस्:
वनस्पति विज्ञान – Botany: प्रश्न र उत्तर
सही लागेको विकल्पमा थिच्नुहोस्। सही भए हरियो, गलत भए रातो देखिन्छ; ३ सेकेन्डपछि सही उत्तर र व्याख्या देखिन्छ।
सही: ० / ०
-
A hypogynous flower, with the ovary superior and the other floral parts below it, is found in:
सही उत्तर: घ) mustard, China rose and brinjal
In hypogynous flowers the gynoecium is at the highest position; guava, cucumber and sunflower have epigynous flowers with an inferior ovary.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
-
The leaf of neem (Azadirachta indica) is:
सही उत्तर: ख) pinnately compound
In neem, many leaflets are borne along a common axis (rachis), so the leaf is pinnately compound; silk cotton has a palmately compound leaf.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
-
Whorled phyllotaxy, in which more than two leaves arise at a node and form a whorl, is seen in:
सही उत्तर: घ) Alstonia
Alstonia has whorled leaves; China rose and mustard have alternate phyllotaxy, while guava and Calotropis have opposite leaves.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
-
In an onion bulb, the main edible part consists of:
सही उत्तर: क) fleshy scale leaves
The onion bulb is a reduced disc-like stem bearing many thick, fleshy scale leaves that store food.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
-
The woody, straight, pointed thorns of Citrus and Bougainvillea are modified:
सही उत्तर: ख) axillary buds (stem)
Thorns arise from axillary buds and are stem modifications that protect the plant; spines of cacti are modified leaves.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
-
Tendrils that develop from axillary buds and are therefore modified stems are found in:
सही उत्तर: क) cucumber and grapevine
Stem tendrils are slender, coiled structures arising from axillary buds in cucumber, pumpkin, watermelon and grapevine; pea tendrils are modified leaflets.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
-
Adventitious roots arising from the lower nodes of the stem and giving extra support, called stilt roots, are found in:
सही उत्तर: घ) maize and sugarcane
Maize and sugarcane develop stilt roots from lower nodes; the banyan tree has prop roots hanging from its branches.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
-
'Yarsagumba', a valuable medicinal product collected from the high Himalayan pastures of Nepal, is:
सही उत्तर: घ) a fungus (Ophiocordyceps sinensis) growing from a parasitised caterpillar
Yarsagumba is the fruiting body of the fungus Ophiocordyceps sinensis emerging from the mummified larva of a ghost moth that it has parasitised.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
-
Ergot of rye, whose toxic alkaloids are also the source of LSD, is caused by the fungus:
सही उत्तर: क) Claviceps purpurea
Claviceps purpurea (an ascomycete) infects rye ovaries, forming sclerotia (ergots) rich in alkaloids; Puccinia causes rust and Ustilago causes smut.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
-
A symbiotic association between a fungus and the roots of a higher plant is called:
सही उत्तर: घ) mycorrhiza
In mycorrhiza the fungus helps the root absorb phosphorus and water and receives sugars from the plant; a lichen is an alga–fungus association.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
यी अभ्यास प्रश्न हुन्, आधिकारिक प्रश्न होइनन्। पाठ्यक्रम, विज्ञापन र नतिजाका लागि सम्बन्धित निकायको आधिकारिक वेबसाइट हेर्नुहोस्। उत्तरमा गल्ती भेटे प्रश्नमुनिको "टिप्पणी / गल्ती रिपोर्ट" मा लेख्नुहोस्।
नमस्ते! पाठ्यक्रम, सामान्य ज्ञान, भाषा परीक्षा वा कुनै प्रश्नको उत्तर बुझ्न सोध्नुहोस्।
AI ले गल्ती गर्न सक्छ। महत्वपूर्ण कुरा आधिकारिक स्रोतमा जाँच्नुहोस्।