Advertisements
Advertisements
प्रश्न
How are ‘pollen banks’ useful?
उत्तर
Pollen grains can be stored for years by cryopreservation. After this treatment, they are stored in pollen banks. Such conserved pollen grains can be used in plant breeding programmes.
APPEARS IN
संबंधित प्रश्न
A moss plant is unable to complete its life cycle in a dry environment. State two reasons.
Microsporogenesis occurs ______.
Proximal end of the filament of stamen is attached to the ______.
The anther wall consists of four wall layers where ______.
Lateral conjugation in Spirogyra takes place in the cells of ______.
Heliophytes are ______.
Which one of the following is surrounded by callosa wall?
In some members of which of the following pairs of families, pollen grains retain their viability for months after release?
A male plant bearing red flowers was crossed with a female plant bearing yellow flowers. In the F1 generation, all the flowers were orange in colour.
Give a reason to explain the change of colours in F1 generation.
Draw a neat and well labelled diagram of T.S. of anther.
