Advertisements
Advertisements
Questions
Mention pollination types.
Explain the different types of pollination.
Advertisements
Solution
- Self-pollination: It is the transfer of pollen grains from the anther to the stigma of the same flower or another flower on the same plant.
- Cross-pollination: It is the transfer of pollen grains from the anther to the stigma of the flower present on two different plants.
APPEARS IN
RELATED QUESTIONS
What is pollination?
(i) Name the part marked 'A' in the diagram.
(ii) How dose 'A' reachese part 'B'?
(iii) State the importance of the part 'C'.
(iv) What happens to the part marked 'D' after fertilisation is over?
State significance of pollination.
"The chromosomal number of the sexually producing parents and their offspring is the same." Justify this statement.
The reproductive part of a plant is the ______.
Mature ovary forms the ______.
What is made in anther of a flower?
How do the insects help in cross-pollination?
Name the part of a seed which contains stored food.
In what ways is fertilisation in a plant similar to fertilisation in a human?
What is a flower ? Draw a neat labelled diagram showing the L.S. of a typical flower.
Multiple choice question. Tick (✓) the correct choice:
The male gamete is present inside the which germinates.
- the style
- the stigma
- the anther
- the ovary
Fill in the blanks:
A carpel consists of ________ , ________ and ________.
Give one example each of unisexual and bisexual flowers. Differentiate between the two types of pollination that occur in flowers. What happens when a pollen lands on a suitable stigma? Write about the events that occur till the seed formation in the ovary.
Explain the process of fertilisation in flowers.
Draw a diagram of a pistil showing pollen tube growth into the ovule and label the following:
Pollen grain, male gamete, female gamete, ovary.
Write the names of male and female reproductive parts of a flower.
Describe an activity to demonstrate phototropism.
Draw a diagram of the longitudinal section of a flower and label the following parts.
__________ is present in unisexual flower.
Find an odd one out.
Give scientific reason.
Flower is a structural unit of sexual reproduction in plants.
Give scientific reason.
Fertilization in plants is called double fertilization.
Draw a neat and labelled diagram.
Double fertilization in angiosperms
The essential parts of a flower are ______.
Write the events involved in the sexual reproduction of a flowering plant.
a. Discuss the first event and write the types.
b. Mention the advantages and the disadvantages of that event.
In which part of the flower germination of pollen grains takes place?
The anther wall consists of four wall layers where ______
Gloriosa superba exhibits ______.
The flower of the Hibiscus plant is ______
The seed that contains the future plant is called the ______
Pollen grains are produced by ______
Draw the diagram of a flower and label the four whorls. Write the names of gamete producing organs in the flower.
Sketch and label the essential and accessory whorls of flower.
Name the reproductive parts of an angiosperm. Where are these parts located? Explain the structure of its male reproductive part.
What is puberty?
Consider the following three flowers namely X, Y and Z. Which flower(s) would develop into a fruit?
| Flower X | Flower Y | Flower Z |
 |
 |
 |
