Question:
What is endosperm? Describe the process of development and its function.
What is endosperm? Describe the process of development and its function.
Show Hint
Endosperm serves as a nutrient reserve that supports seedling growth until the plant can produce its own food via photosynthesis.
Updated On: Sep 3, 2025
Hide Solution
Verified By Collegedunia
Solution and Explanation
Step 1: Definition of Endosperm.
Endosperm is a tissue that forms during the fertilization process in angiosperms (flowering plants). It is formed by the fusion of one sperm cell with the two polar nuclei, resulting in a triploid (3n) structure. The primary function of endosperm is to provide nourishment to the developing embryo within the seed.
Step 2: Process of Development.
During double fertilization, one sperm cell fuses with the egg cell to form the diploid zygote (embryo), while the other sperm fuses with the two polar nuclei to form the triploid endosperm. This triploid cell undergoes mitotic divisions to form the endosperm, which provides nutrients like starch, proteins, and lipids to the developing seed.
Step 3: Function of Endosperm.
The endosperm acts as a source of stored food for the developing embryo, which is crucial during the early stages of seedling growth before the seed can photosynthesize. In some plants, like corn, the endosperm remains a significant part of the mature seed, providing energy for germination.
Final Answer: \[ \boxed{\text{Endosperm is a triploid tissue formed during double fertilization, providing nourishment to the developing embryo.}} \]
Endosperm is a tissue that forms during the fertilization process in angiosperms (flowering plants). It is formed by the fusion of one sperm cell with the two polar nuclei, resulting in a triploid (3n) structure. The primary function of endosperm is to provide nourishment to the developing embryo within the seed.
Step 2: Process of Development.
During double fertilization, one sperm cell fuses with the egg cell to form the diploid zygote (embryo), while the other sperm fuses with the two polar nuclei to form the triploid endosperm. This triploid cell undergoes mitotic divisions to form the endosperm, which provides nutrients like starch, proteins, and lipids to the developing seed.
Step 3: Function of Endosperm.
The endosperm acts as a source of stored food for the developing embryo, which is crucial during the early stages of seedling growth before the seed can photosynthesize. In some plants, like corn, the endosperm remains a significant part of the mature seed, providing energy for germination.
Final Answer: \[ \boxed{\text{Endosperm is a triploid tissue formed during double fertilization, providing nourishment to the developing embryo.}} \]
Was this answer helpful?
0
0
Top Questions on Ecology
- In a sampling expedition near a peninsula, 180 dolphins from a large population of dolphins were captured and marked by tagging their dorsal fins. The tagged dolphins were then allowed to join back into the population. In a subsequent expedition, 42 dolphins were photographed from the same large population. Among these, 7 dolphins contained the tags. Assuming that the population size remains the same and that tags were not lost, the estimated population size of dolphins in the peninsula is ........... (answer in integer)
- A forest has four different tree species (A, B, C, and D) and their numbers are: \( A = 60 \); \( B = 20 \); \( C = 10 \); and \( D = 10 \). The Shannon biodiversity index of the trees in this forest is ................... (rounded off to 2 decimals)
- Which of the following terrestrial biomes has the highest animal diversity?
- What do you understand by biodiversity? How can it be preserved?
- What is plant succession? Explain with an example.
View More Questions
Questions Asked in UP Board XII exam
- What is the meaning of Stupa?
- UP Board XII - 2025
- Art and Culture
- (Only for Vision Impaired Examinees in lieu of Q.No. 26 for Map Work)
Instruction: Write the answers of the following questions in your answer-book. Do not use the map.
\[\begin{array}{rl} \bullet & \text{Where was the later capital of Harshavardhan?} \\ \bullet & \text{Where is Taj Mahal located?} \\ \bullet & \text{At which place did Mahatma Gandhi withdraw the non-cooperation movement due to violence?} \\ \bullet & \text{Where was the Congress Session held in 1929?} \\ \bullet & \text{Where did Lord Buddha attain enlightenment?} \\ \end{array}\]- UP Board XII - 2025
- Indian History and Geography
- Question related with Map :
Show the following places on the outline map of India supplied to you by the symbol \(\odot\) and also write their names. For correct name and correct location 1+1 marks are allotted.
\[\begin{array}{rl} \bullet & \text{The place where Harshavardhan's later capital was located.} \\ \bullet & \text{The place where Taj Mahal is situated.} \\ \bullet & \text{The place where Mahatma Gandhi withdrew the non-cooperation movement after violence broke out.} \\ \bullet & \text{The place where the annual session of the Indian National Congress was held in 1929.} \\ \bullet & \text{The place where Buddha attained enlightenment.} \\ \end{array}\]- UP Board XII - 2025
- Map Work
- Who was Andal? What was she called?
- UP Board XII - 2025
- Bhakti Movement
Mention the events related to the following historical dates:
\[\begin{array}{rl} \bullet & 321 \,\text{B.C.} \\ \bullet & 1829 \,\text{A.D.} \\ \bullet & 973 \,\text{A.D.} \\ \bullet & 1336 \,\text{A.D.} \\ \bullet & 1605 \,\text{A.D.} \\ \bullet & 1875 \,\text{A.D.} \\ \bullet & 1885 \,\text{A.D.} \\ \bullet & 1907 \,\text{A.D.} \\ \bullet & 1942 \,\text{A.D.} \\ \bullet & 1935 \,\text{A.D.} \end{array}\]
- UP Board XII - 2025
- Historical Dates
View More Questions