Question

Differentiate between cross pollination and self pollination.​

Answer 1

Answer:

Explanation:

Cross-pollination is the transfer of pollen from the anther of one flower to the stigma of another flower on a different individual of the same species. Self-pollination occurs in flowers where the stamen and carpel mature at the same time, and are positioned so that the pollen can land on the flower’s stigma.

Answer 2

Explanation:

SELF POLLINATION:

1. IT IS THE TRANSFER OF POLLEN GRAINS FROM THE ANTHERS TO THE STIGMA OF THE SAME FLOWER.

2. NO EXTERNAL AGENCY OR AGENT IS REQUIRED

3. MALE AND FEMALE PARTS MATURE AT SAME TIME

4. IT CAN OCCUR EVEN WHEN FLOWER IS CLOSED

5.IT PRESERVES PARENTAL CHARACTERS

6. NEW VARIATIONS ARE IMPOSSIBLE,HENCE YOUNG ONES CANNOT ADAPT TO CHANGED ENVIRONMENTAL CONDITIONS

7.NEW VARIETIES ARE NOT POSSIBLE

CROSS POLLINATION:

1. IT IS THE TRANSFER OF POLLEN GRAINS FROM THE ANTHERS OF ONE FLOWER TO THE STIGMA OF ANOTHER FLOWER OF A DIFFERENT PLANT OF THE SAME SPEICES

2. AN EXTERNAL AGENT (WIND,WATER, INSECT) IS ALWAYS REQUIRED

3. ANTHERS AND STIGMA MATURE AT DIFFERENT TIMES

4. IT CAN OCCUR WHEN FLOWER IS OPEN

5.IT DOES NOT PRESERVE PARENTAL CHARACTERS

6. OFFSPRINGS ARE HEALTHIER TO ADAPT TO ENVIRONMENTAL CHANGES

7. NEW VARIETIES CAN BE PRODUCED