Advertisements
Advertisements
प्रश्न
Mention one advantage of apomictic seeds to farmers.
Advertisements
उत्तर
Embryos formed through apomixis are generally free from infections.
APPEARS IN
संबंधित प्रश्न
Explain the different ways apomictic seeds can develop, Give an example of each.
Answer the following question.
When a seed of orange is squeezed, many embryos, instead of one are observed. Explain how it is possible.
The ______ collect the pollen grains.
Fill in the blanks:
The male whorl, called the ________ produces ________.
Fill in the blank:
________takes place when one male gamete and the egg fuse together. The fertilized egg grows into a seed from which the new plants can grow.
Once the pollen reaches the stigma, the pollen tube traverses down the ________ to the ovary where fertilization occurs.
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 | ||
Which of the following is TRUE with respect to cleavage polyembryony?
Adventive polyembryony in citrus is due to ______.
In case of polyembryony, if an embryo develops from the synergid and another from the nucellus which is haploid and which is diploid?
What is pollen grain?
Which embryo sac cells can develop into embryos other than the egg cell in polyembryony?
According to the Recessive Gene Theory, what controls polyembryony?
Who first observed polyembryony, in which plant species, and in which year?
Which of the following is an example of sporophytic cell activation polyembryony?
Which mechanism involves the splitting or division of the zygote or proembryo into multiple parts?
