NEET > Biology Class 12 > Post-Fertilisation: Endosperm & Embryo Development
Post-Fertilisation: Endosperm & Embryo Development Video Lecture - Biology Class 12 - NEET
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FAQs on Post-Fertilisation: Endosperm & Embryo Development Video Lecture - Biology Class 12 - NEET
| 1. What is the role of endosperm in post-fertilisation? |  |
Ans. The endosperm plays a crucial role in post-fertilisation as it provides nourishment and support to the developing embryo. It is a tissue that stores nutrients such as starch, proteins, and oils, which are essential for the embryo's growth and development.
| 2. How does the endosperm develop after fertilisation? | |
Ans. After fertilisation, the endosperm develops through a process called double fertilisation. During double fertilisation, one sperm fertilises the egg cell to form the embryo, while the other sperm fuses with the central cell to form the endosperm. The endosperm then undergoes cell division and growth to form a multicellular structure that surrounds the embryo.
| 3. What are the major functions of the embryo during post-fertilisation? | |
Ans. The embryo plays several important roles during post-fertilisation. It develops into a new plant, establishes the primary root system, produces shoots and leaves, and eventually forms the mature plant. Additionally, the embryo also stores food reserves, such as lipids and proteins, which are utilized during germination to support early growth until the plant can photosynthesize.
| 4. How does embryo development occur after fertilisation? | |
Ans. After fertilisation, the embryo undergoes a series of developmental stages. It starts with cell division and differentiation, leading to the formation of different tissues and organs, including the root, shoot, and cotyledons. The embryo continues to grow and develop until it reaches maturity, at which point it is ready for germination and the beginning of a new plant's life cycle.
| 5. What are the similarities and differences between endosperm and embryo development? | |
Ans. Both endosperm and embryo development occur after fertilisation, but they have distinct roles and processes. The endosperm primarily functions as a source of nutrients for the developing embryo, while the embryo develops into a new plant. The endosperm is formed through double fertilisation, while the embryo is formed by the fusion of the sperm and egg cell. Additionally, the endosperm undergoes cell division and growth to form a multicellular structure, while the embryo undergoes cell differentiation to form various tissues and organs.
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