Question
How does Differentiate between self-pollination and cross-pollination.
✓
Answer
|
Basis of differentiation
|
Self pollination
|
Cross pollination
|
|
Meaning
|
The process of transfer of pollen grains from anthers to the stigma of a flower, but when this process is between the flowers of the same plant than the term is called self-pollination.
|
The process of transfer of pollen grains between the flowers of the different plants of the same species is called cross-pollination.
|
|
It involves
|
Single plant.
|
Two different plants of the same species.
|
|
Self pollination
|
Self-pollination occurs in perfect flowers only.
|
It occurs in both imperfect and perfect flowers.
|
|
Pollinating agents
|
Pollinating agents are not required.
|
Pollinating agent such as wind, water, insects, etc. is not required.
|
|
Pollen grains
|
Less number of pollen grains are produced.
|
A large number of pollen grains are produced.
|
|
Examples
|
Wheat, rice, pea, orchids, barley, tomatoes, peaches, apricot.
|
Mulberry, maize, pumpkins, strawberries, blackberries, plums, grapes, daffodils, maple, catkins, grasses.
|
Need a full question paper?
Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.
Explore more
Similar questions
Give a brief description of the process of synthesis of food in green plants.
Explain the mechanism of breathing with the help of a diagram.
What are permanent tissues? Describe the different types of simple permanent tissues.
Following are some of the characteristics of animals:
For each characteristic indicate whether it is adaptation for tropical rainforests or polar regions. Do you think that some of these characteristics can be adapted for both regions$?$
→|
S.No.
|
Characteristics of animals
|
Adaption
|
|
$1.$
|
Diets heavy on fruits.
|
|
|
$2.$
|
White fur.
|
|
|
$3.$
|
Need to migrate.
|
|
|
$4.$
|
Loud voice.
|
|
|
$5.$
|
Sticky pads on feet.
|
|
|
$6.$
|
Layer of fat under the skin.
|
|
|
$7.$
|
Wide and large paws.
|
|
|
$8.$
|
Bright colours.
|
|
|
$9.$
|
Strong tails.
|
|
|
$10.$
|
Long and large beak.
|
|
In figure, the artist has forgotten to put the labels and directions on the arrows. Mark the directions on the arrows and label the diagram using the following labels
clouds, rain, atmosphere, carbon dioxide, oxygen, plants, animals, soil, roots, water table
Discuss the role of observation and imagination in scientific discovery.
What is groundwater? What are the sources of water which are fed by groundwater?
Differentiate between arteries and veins.
Describe domestic household circuit.
State few characteristics of magnetic field lines.