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Starting from the innermost part, the correct sequence of parts in an ovule are
- a)Egg, nucellus, embryosac, integument
- b)Egg, embryosac, nucellus, Integument
- c)Embryo sac, nucellus, integument, egg
- d)Egg, integument, embryosac, nucellus
Correct answer is option 'B'. Can you explain this answer?
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Starting from the innermost part, the correct sequence of parts in an ...
The correct sequence of parts in an ovule are:
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Starting from the innermost part, the correct sequence of parts in an ...
Anatomy of Ovule
An ovule is a reproductive structure in flowering plants that develops into a seed after fertilization. It consists of several parts that are arranged in a specific sequence.
The correct sequence of parts in an ovule starting from the innermost part is:
Embryosac → Nucellus → Integument → Egg
Explanation
Embryosac: It is the innermost part of the ovule, which is also known as the female gametophyte. It is formed by the division of the megaspore and contains one or more haploid nuclei.
Nucellus: It is the central part of the ovule, which surrounds the embryosac. It is also known as the megasporangium and contains the megaspore mother cell.
Integument: It is the outermost part of the ovule, which surrounds the nucellus. It is also known as the seed coat and provides protection to the developing embryo.
Egg: It is the female gamete that is formed within the embryosac. It is the largest cell in the embryosac and is surrounded by two synergids and an antipodal cell.
Therefore, the correct sequence of parts in an ovule is Egg → Embryosac → Nucellus → Integument. Option B is the correct answer.
An ovule is a reproductive structure in flowering plants that develops into a seed after fertilization. It consists of several parts that are arranged in a specific sequence.
The correct sequence of parts in an ovule starting from the innermost part is:
Embryosac → Nucellus → Integument → Egg
Explanation
Embryosac: It is the innermost part of the ovule, which is also known as the female gametophyte. It is formed by the division of the megaspore and contains one or more haploid nuclei.
Nucellus: It is the central part of the ovule, which surrounds the embryosac. It is also known as the megasporangium and contains the megaspore mother cell.
Integument: It is the outermost part of the ovule, which surrounds the nucellus. It is also known as the seed coat and provides protection to the developing embryo.
Egg: It is the female gamete that is formed within the embryosac. It is the largest cell in the embryosac and is surrounded by two synergids and an antipodal cell.
Therefore, the correct sequence of parts in an ovule is Egg → Embryosac → Nucellus → Integument. Option B is the correct answer.
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Starting from the innermost part, the correct sequence of parts in an ...
Egg cell is inside the embryo sac in the ovule. The embryo sac is further enclosed by the parenchymatous tissue, nucellus, which provides nutrition to developing embryo. Nucellus is ultimately surrounded by integuments.
So, the correct answer is 'Egg, embryo sac, nucellus, integument.
So, the correct answer is 'Egg, embryo sac, nucellus, integument.
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