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प्रश्न
State the name of the functional unit concerned with sexual reproduction.
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उत्तर
In plants, the flower is the functional unit concerned with the sexual reproduction of plants.
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संबंधित प्रश्न
Name and differentiate between the two modes of pollination in flowering plants.
Name the parts labelled as A, B, C and D in the diagram given below:
Give one example of a unisexual flower.
Mature ovary forms the ______.
Where are the pollen grains produced?
What is the name of female part of a flower?
Fill in the following blank with suitable word :
The female organ of reproduction in the flower is the...........
Fill in the following blank with suitable word :
The male organ of reproduction in the flower is the.......... .
What is made in ovary of a flower?
How do the insects help in cross-pollination?
In tobacco plant, the male gametes have 24 chromosomes.
What is the number of chromosomes in the zygote?
What is pollination? How does pollination occur?
What changes take place in the flower after fertilisation which lead to the formation of seeds and fruit?
The flask-shaped organ A at the centre of a flower is surrounded by a number of little stalks B having swollen tops which lie just inside the ring of petals.
(a) Name A. What are the various parts of A?
(b) Which part of A contains gametes?
(c) Name B. What is the swollen top of B known as?
(d) What does the swollen top of b contain?
(e) Out of A and B, which one is (i) male part, and (ii) female part of the flower?
In a bisexual flower, inspite of the young stamens being removed artificially, the flower produces fruit. Explain.
What part is played by stamens and carpels in reproduction?
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.
Identify A, B, C and D in the given diagram and write their names.
“Cell division is a type of reproduction in unicellular organism.” Justify.
Which of the following is not an unisexual flower?
a) Coconut
b) Papaya
c) Gulmohor
d) Maize
Sketch the labeled diagram:
Flower with its sexual reproductive organs
What is meant by pollination?
__________ is present in unisexual flower.
Bisexual : Hibiscus : : Unisexual : ___________
Pollen grains from anther are transferred to the stigma.
Observe the figure below. Write functions of the labelled parts.
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.
Which of the following is the outermost protective layer of anther?
The flower of the Hibiscus plant is ______
Which among the following statements are true for unisexual flowers?
- They possess both stamen and pistil
- They possess either stamen or pistil
- They exhibit cross pollination
- Unisexual flowers possessing only stamens cannot produce fruits
In a bisexual flower inspite of the young stamens being removed artificially, the flower produces fruit. Provide a suitable explanation for the above situation.
Is the chromosome number of zygote, embryonal cells and adult of a particular organism always constant? How is the constancy maintained in these three stages?
Trace the path a male gamete takes to fertilise a female gamete after being released from the penis.
In flowering plants, the pollen grains are transferred to stigma by pollination but the female germ cells are present in the ovary.
Explain with the help of a labelled diagram (only concerned parts), how the male germ cell reaches the ovary.
Consider the following three flowers namely X, Y and Z. Which flower(s) would develop into a fruit?
| Flower X | Flower Y | Flower Z |
 |
 |
 |
Given below is a diagram of a germinating seed. Label the parts that:
- gives rise to future shoot.
- gives rise to future root system.
- stores food.
