A typical angiosperm embryo sac at maturity is:
1. 7-nucleate and 7-celled
2. 8-nucleate and 8-celled
3. 8-nucleate and 7-celled
4. 7-nucleate and 8-celled
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyWhich one of the following statements regarding post-fertilization development in flowering plants is incorrect?
1. Ovules develop into an embryo sac
2. Ovary develops into fruit
3. Zygote develops into an embryo
4. Central cell develops into endosperm
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyWhich is the most common type of embryo sac in angiosperms?
1. Tetrasporic with one mitotic stage of division
2. Monosporic with three sequential mitotic divisions
3. Monosporic with two sequential mitotic divisions
4. Bisporic with two sequential mitotic divisions
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyFunctional megaspore in an angiosperm develops into :
1. | Endosperm | 2. | Embryo sac |
3. | Embryo | 4. | Ovule |
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyIn majority of angiosperms
1. egg has a filiform apparatus
2. there are numerous antipodal cells
3. reduction division occurs in the megaspore mother cells
4. a small central cell is present in the embryo sac
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyFiliform apparatus is a characteristic feature of
1. Generative cell
2. nucellar embryo
3. aleurone cell
4. synergids
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyIn angiosperms, microsporogenesis and megasporogenesis
1. Occur in anther
2. Form gametes without further divisions
3. Involve meiosis
4. Occur in ovule
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyFunction of filiform apparutus is to :
1. Recognize the suitable pollen at stigma
2. Stimulate division of genrative cell
3. Producer nectar
4. Guide the entry of pollen tube
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyThe gynoecium consists of many free pistils in flowers of
1. Aloe
2. Tomato
3. Papaver
4. Michelia
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & Biology1. | it helps in the entry of pollen tube into the synergid |
2. | it prevents the entry of more than one pollen tube into the embryo sac |
3. | it brings about opening of the pollen tube |
4. | it guides pollen tube from the synergid to the egg |
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & Biology