Advertisements
Advertisements
Question
In case of polyembryony, if an embryo develops from the synergid and another from the nucellus which is haploid and which is diploid?
Advertisements
Solution
The synergid embryo is haploid, and the nucellus embryo is diploid.
APPEARS IN
RELATED QUESTIONS
State what is apomixis. Comment on its significance. How can it be commercially used?
Explain any three advantages that seeds offer to angiosperms.
Why are some seeds referred to as apomictic seeds?
Explain the different ways apomictic seeds can develop, Give an example of each.
Mention one advantage of apomictic seeds to farmers.
Answer the following question.
When a seed of orange is squeezed, many embryos, instead of one are observed. Explain how it is possible.
How polyembryony can be commercially exploited?
The ______ collect the pollen grains.
Fill in the blanks:
The male whorl, called the ________ produces ________.
Fill in the blank:
The pollen grains represent the ________.
Fill in the blank:
The ________contains the egg or ovum.
Fill in the blank:
________is the transfer of pollen grains from the anther of the flower to the stigma of the same or a different flower
Once the pollen reaches the stigma, the pollen tube traverses down the ________ to the ovary where fertilization occurs.
Fill in the blanks:
The ______ are coloured to attract the insects that carry the pollen. Some flowers also produce ______ or ______ that attracts insects.
Fill in the blank:
The whorl ________is green that protects the flower until it opens.
Match the column.
| Column - I (Structure before seed formation) |
Column - II (Structure after seed formation) |
||
| A. | Funiculus | I. | Hilum |
| B. | Scar of ovule | II. | Tegmen |
| C. | Zygote | III. | Testa |
| D. | Inner integument | IV. | Stalk of seed |
| V. | Embryo | ||
What is adventive polyembryony?
Which of the following is TRUE with respect to cleavage polyembryony?
Apomixis is a type of reproduction that results is the development of a/an ______.
The polyembryony commonly occurs in ______.
Adventive polyembryony in citrus is due to ______.
What is polyembryony and how can it be commercially exploited?
What is pollen grain?
