Practice focused topic-wise MCQs with answers and explanations for quick revision and exam preparation.
Difficulty select karke sirf is topic ke focused MCQs practice karein. Score, timer aur explanations student-friendly flow me milenge.
Showing 31-40 of 50 questions.
Usually how many megaspores remain functional out of four?
A. एकOne
Identify the concept: megasporogenesis forms four megaspores.
Usually only one remains functional and forms the embryo sac.
Memory tip: Four formed, one functional.
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What is the main purpose of pollen-pistil interaction?
B. उचित पराग को पहचानना और स्वीकार करनाTo recognize and accept compatible pollen
Identify the concept: pollen and pistil show a recognition process.
Pistil accepts compatible pollen and may reject incompatible pollen.
Exam note: Compatibility is important for fertilization.
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Double fertilization is a characteristic feature of which group?
C. आवृतबीजीAngiosperms
Identify the concept: double fertilization occurs in flowering plants.
Angiosperms show two fusions: syngamy and triple fusion.
Exam note: Double fertilization is a special feature of angiosperms.
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A. एक नर युग्मक और अंड कोशिकाOne male gamete and egg cell
Identify the concept: syngamy is part of fertilization.
One male gamete fuses with the egg to form the zygote.
Memory tip: Syngamy forms zygote.
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What fuses during triple fusion?
B. एक नर युग्मक और दो ध्रुवीय केंद्रकOne male gamete and two polar nuclei
Identify the concept: triple fusion is the second fusion in double fertilization.
One male gamete fuses with two polar nuclei.
Exam note: Triple fusion forms the primary endosperm nucleus.
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A. युग्मनजZygote
Identify the concept: syngamy is fusion of egg and male gamete.
It forms the zygote, which later develops into embryo.
Memory tip: Zygote develops into embryo.
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Which tissue mainly forms after triple fusion?
B. एंडोस्पर्मEndosperm
Identify the concept: triple fusion occurs in the central cell.
It leads to endosperm formation, which nourishes the embryo.
Exam note: Endosperm is a nutritive tissue.
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After fertilization, the ovule develops into what?
B. बीजSeed
Identify the concept: after fertilization, flower parts change.
The ovule develops into the seed.
Exam note: Ovule becomes seed.
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After fertilization, the ovary develops into what?
B. फलFruit
Identify the concept: the ovary grows after fertilization.
The ovary develops into the fruit.
Memory tip: Ovary becomes fruit, ovule becomes seed.
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Seed coat develops from which part?
A. बीजांडावरणInteguments
Identify the concept: seed has a protective outer covering.
Integuments of ovule form the seed coat.
Exam note: Integuments form seed coat.
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