Biology
- What Is Parthenocarpy?
A) Process of formation of seeds without fertilization.B) Mechanism of transfer of pollen grains from anther to stigma. C) Phenomenon of development of fruits without fertilization.D) Phenomenon of formation of more than one embryo in the seed. The...
- Endosperm
Term: endosperm Origin: Anc Greek????/endo(=inside, within)??????(=seed) > (=sow) >??????/spearo (=disperse) DefinitionAn endospore is a dormant and temporarily non-reproductive structure produced by certain bacteria under unfavorable conditions....
- Comparison Between Pollination And Fertilization
Pollination and Fertilization: Major differences Pollination Fertilization 1. It is the transfer of pollen grains from anther to stigma of the flower It is the fusion of male gametes and egg cell in embryo...
- Changes Occuring In Embryo During Pregnancy
Days Changes 1 Fertilization. Diameter of egg is about 0.15 mm 2 2 cell stage 3 16 cell stage (morula) 4 Entry of blastocyst in the lumen of uterus. Disappearance of zona pellucida. Diameter of blastocyst is about 0.3 mm 7-8 Partial...
- 2. Sexual Reproduction In Flowering Plants
Click here for PDFAll flowering plants (angiosperms) show sexual reproduction. PRE-FERTILISATION: STRUCTURES & EVENTS- Several hormonal and structural changes are initiated which lead to the differentiation and further development...
Biology
Comparison between Embryo and Endosperm
Embryo and Endosperm: Major Differences
| Embryo | Endosperm |
| 1. It is formed by fertilized egg (syngamy) | It is formed by fusion of secondary nucleus (triple fusion) |
| 2. It is always diploid | It is triploid |
| 3. It gives rise to new plant | It provides nutrition to the developing embryo |
| 4. Cotyledons, plumule and radicle are formed in embryo | There is no formation of such structures |
| 5. Embryo is seen in seed | It is only seen in endospermic seeds. Otherwise it degenerates with the formation of seed. |
| 6. Embryo dies in the absence of endosperm | Endosperm does not die in the absence of embryo |
| 7. Germination of seed takes place | There is no germination of seed in endosperm |
- What Is Parthenocarpy?
A) Process of formation of seeds without fertilization.B) Mechanism of transfer of pollen grains from anther to stigma. C) Phenomenon of development of fruits without fertilization.D) Phenomenon of formation of more than one embryo in the seed. The...
- Endosperm
Term: endosperm Origin: Anc Greek????/endo(=inside, within)??????(=seed) > (=sow) >??????/spearo (=disperse) DefinitionAn endospore is a dormant and temporarily non-reproductive structure produced by certain bacteria under unfavorable conditions....
- Comparison Between Pollination And Fertilization
Pollination and Fertilization: Major differences Pollination Fertilization 1. It is the transfer of pollen grains from anther to stigma of the flower It is the fusion of male gametes and egg cell in embryo...
- Changes Occuring In Embryo During Pregnancy
Days Changes 1 Fertilization. Diameter of egg is about 0.15 mm 2 2 cell stage 3 16 cell stage (morula) 4 Entry of blastocyst in the lumen of uterus. Disappearance of zona pellucida. Diameter of blastocyst is about 0.3 mm 7-8 Partial...
- 2. Sexual Reproduction In Flowering Plants
Click here for PDFAll flowering plants (angiosperms) show sexual reproduction. PRE-FERTILISATION: STRUCTURES & EVENTS- Several hormonal and structural changes are initiated which lead to the differentiation and further development...