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Starting from the innermost part, the correct sequence of parts in an ovule are,
(A) egg, nucellus, embryo sac, integument
(B) egg, embryo sac, nucellus, integument
(C) embryo sac, nucellus, integument, egg
(D) egg, integument, embryo sac, nucellus.

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(B) Starting from the innermost part, the correct sequence of parts in an ovule is egg, embryo-sac, nucellus, and integument.
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Practice questions from Oswaal CBSE MCQs Chapterwise For Term I II, Class 12, Biology (Oswaal)

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Judy is a 40-year-old white woman born and raised in Ontario, Canada, who presents to her primary care clinic with concerns regarding periodic memory loss, impaired vision, urinary incontinence, stumbling when walking, numbness in her feet and hands, slurred speech, fatigue, and pain in her legs and arms. She undergoes magnetic resonance imaging (MRI) and is told that she has multiple sclerosis (MS), an autoimmune disease against myelin causing progressive degeneration of the nerves in the central nervous system and peripheral nervous system. There is no known cause. She is told that 211,000 Americans and 1.1 million people worldwide are currently diagnosed with MS and that genetic and environmental factors play a role in an individual's risk for developing MS. She is also informed that the characteristics of people most likely to develop MS include women of northern European ancestry, aged 20 to 40 years, with a family history of MS. Finally, she is told to expect periods of acute neurologic symptoms alternating with periods of symptom relief or return of neurologic function.
  1. Would you define Judy as healthy or ill? Explain.
  2. What risk factors were mentioned in this case study related to the development of MS?
  3. What is the etiology of MS? Would MS be considered either nosocomial or iatrogenic? Explain.
  4. Identify the symptoms that Judy reports.
  5. Identify signs leading to the diagnosis of MS.
  6. How would you categorize this illness, acute or chronic? Describe the expected course of the illness.
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Question Text
Starting from the innermost part, the correct sequence of parts in an ovule are,
(A) egg, nucellus, embryo sac, integument
(B) egg, embryo sac, nucellus, integument
(C) embryo sac, nucellus, integument, egg
(D) egg, integument, embryo sac, nucellus.
TopicSexual Reproduction in Flowering Plants
SubjectBiology
ClassClass 12
Answer TypeText solution:1
Upvotes85