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 21-30 of 50 questions.
Ovule is attached inside the ovary by which structure?
A. फ्यूनिकलFunicle
Identify the concept: ovule is present inside the ovary.
It is attached to the placenta by the funicle.
Memory tip: Funicle works like a small stalk.
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What is the small opening in an ovule called?
B. बीजांडद्वारMicropyle
Identify the concept: ovule has a small opening.
This opening is called micropyle and may allow pollen tube entry.
Exam note: Micropyle is also seen as a pore in seed.
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Which is the main nutritive tissue of the ovule?
A. न्यूसेलसNucellus
Identify the concept: ovule has tissue around the embryo sac.
Nucellus is the nutritive tissue.
Memory tip: Nucellus nourishes the embryo sac.
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What is the female gametophyte commonly called?
B. भ्रूणकोषEmbryo sac
Identify the concept: female gametophyte is inside the ovule.
It is called the embryo sac.
Exam note: Female gametophyte equals embryo sac.
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How many cells are present in a typical mature embryo sac?
B. सातSeven
Identify the concept: typical embryo sac is 7-celled and 8-nucleate.
It has 7 cells because the central cell has two polar nuclei.
Memory tip: 7 cells, 8 nuclei.
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How many nuclei are present in a typical mature embryo sac?
B. आठEight
Identify the concept: embryo sac structure is important for exams.
A typical mature embryo sac has 8 nuclei.
Exam note: Mature embryo sac is 7-celled and 8-nucleate.
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What is included in the egg apparatus?
A. एक अंड कोशिका और दो सहायक कोशिकाएंOne egg cell and two synergids
Identify the concept: egg apparatus is at the micropylar end of embryo sac.
It includes one egg cell and two synergids.
Memory tip: Egg apparatus equals 1 egg plus 2 synergids.
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Antipodal cells are found at which end of the embryo sac?
B. चालाजा सिरे परChalazal end
Identify the concept: embryo sac has two ends.
Antipodal cells are at the chalazal end.
Exam note: Egg apparatus is at micropylar end, antipodals are at chalazal end.
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What is usually present in the central cell of the embryo sac?
A. दो ध्रुवीय केंद्रकTwo polar nuclei
Identify the concept: central cell is a large part of embryo sac.
It usually contains two polar nuclei, which later fuse with a male gamete.
Exam note: Central cell participates in triple fusion.
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By which process does the megaspore mother cell form megaspores?
B. मीयोसिसMeiosis
Identify the concept: megasporogenesis forms megaspores.
Megaspore mother cell undergoes meiosis to form four megaspores.
Exam note: Mother cell to spores usually involves meiosis.
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