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Q. No.Subtopic: Pollination & Outbreeding Devices |
92%
From NCERT
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Apomixis is:
1. the development of fruit without fertilization
2. production of seeds without fertilization
3. unfertilized eggs developing into males
4. unfertilized eggs developing into females
1. the development of fruit without fertilization
2. production of seeds without fertilization
3. unfertilized eggs developing into males
4. unfertilized eggs developing into females
Subtopic: Apomixis & Polyembryony |
86%
From NCERT
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Subtopic: Pollination & Outbreeding Devices |
89%
From NCERT
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Filiform apparatus is a part of:
| 1. | synergids at the chalazal end of the female gametophyte |
| 2. | antipodals at the chalazal end of the female gametophyte |
| 3. | synergids at the micropylar end of the female gametophyte |
| 4. | antipodals at the micropylar end of the female gametophyte |
Subtopic: Pistil: Ovule | Pistil: Female Gametophyte |
86%
From NCERT
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Thalamus does not contribute to the formation of fruit in:
1. Apple
2. Strawberry
3. Cashew
4. Banana
1. Apple
2. Strawberry
3. Cashew
4. Banana
Subtopic: Seed |
82%
From NCERT
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Identify the incorrect statement:
| 1. | Pollen sacs are developed microsporangia |
| 2. | Pollen grains are developed microspores |
| 3. | Vegetative cell of the pollen grain is bigger than the generative cell |
| 4. | In over 60 percent of angiosperms pollens are shed at 3-celled stage |
Subtopic: Stamen: Male Gametophyte |
85%
From NCERT
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Phoenix dactylifera is commonly known as:
| 1. | Deadly nightshade | 2. | Date palm |
| 3. | Lupine | 4. | Methuselah |
Subtopic: Seed |
86%
From NCERT
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In grass embryos, a flap-like structure present opposite to the scutellum is called as:
1. coleoptile
2. coleorrhiza
3. epiblast
4. hypoblast
1. coleoptile
2. coleorrhiza
3. epiblast
4. hypoblast
Subtopic: Embryo |
57%
From NCERT
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Antipodal is an adjective that means ‘diametrically opposite’. Where are the antipodal cells located in an embryosac of an angiosperm?
1. At the micropylar end
2. At the chalazal end
3. In the middle
4. There are three – one at micropylar and two at chalazal end
1. At the micropylar end
2. At the chalazal end
3. In the middle
4. There are three – one at micropylar and two at chalazal end
Subtopic: Pistil: Ovule |
87%
From NCERT
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In the fully developed female gametophyte of a typical angiosperm:
| 1. | three cells are grouped together at the chalazal end to constitute the egg apparatus |
| 2. | three cells are grouped together at the micropylar and are called antipodals |
| 3. | antipodals have special cellular thickenings called as filiform apparatus |
| 4. | polar nuclei are located in the large central cell |
Subtopic: Pistil: Female Gametophyte |
83%
From NCERT
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