Advertisements
Advertisements
प्रश्न
Fill in the blanks:
The ______ are coloured to attract the insects that carry the pollen. Some flowers also produce ______ or ______ that attracts insects.
उत्तर
The petals are coloured to attract the insects that carry the pollen. Some flowers also produce sweet odour or nectar that attracts insects.
APPEARS IN
संबंधित प्रश्न
Define the Polyembryony.
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?
Fill in the blank:
The ________contains the egg or ovum.
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.
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 | ||
The polyembryony commonly occurs in ______.
The occurrence of two or more embryos in one ovule is called ______
Give reason: Nucellar polyembryony is significant in horticulture.
