Advertisements
Advertisements
प्रश्न
Where are the pollen grains produced?
उत्तर
Pollen grains are produced by anther.
APPEARS IN
संबंधित प्रश्न
Name the parts A, B and C shown in the diagram and write their functions.
How does fertilisation occur in flowers? Name the parts of the flower that develop into (i) seed, and (ii) fruit after fertilisation.
(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?
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.
Name the swollen lower part of the carpel.
What is the name of female organ of a flower (other than carpel)?
Fill in the following blank with suitable word :
The.......... at the base of the carpel contains egg cells.
How is the process of pollination different from fertilization?
Which among the following statements are true for unisexual flowers?
(i) They possess both stamen and pistil
(ii) They possess either stamen or pistil
(iii) They exhibit cross pollination
(iv) Unisexual flower possessing only stamens cannot produce fruits
(a) (i) and (iv)
(b) (ii), (iii) and (iv)
(c) (ii) and (iii)
(d) (i), (iii) and (iv)
What is a flower ? Draw a neat labelled diagram showing the L.S. of a typical flower.
Mention the function of Anther.
What part is played by stamens and carpels in reproduction?
“Cell division is a type of reproduction in unicellular organism.” Justify.
Write the names of male and female reproductive parts of a flower.
List any two differences between pollination and fertilisation.
Fill in the blank by selecting suitable word:
Transfer of pollen grains from the anther to the stigma is known as______________.
What is pollination? Mention its types.
Calyx : Sepals : : Corolla : ________________
Write the functions of sepals
Explain the sexual reproduction process in plants with a diagram.
Match the following
| 1. | Petal | Opuntia |
| 2. | Fern | Chrysanthemum |
| 3. | Phylloclade | Attracts insect |
| 4. | Hooks | Spore |
| 5. | Sucker | Bignonia |
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.
Where does the endothecium layer of anther lobes is present?
In which of the following manner the arrangement of megaspores in a tetrad is observed in angiosperms?
The 3-celled egg apparatus at the micropylar end comprises of ______
Identify the female gametophyte in angiosperms.
Pineapple fruit develops from ______.
Conidia are formed endogenously while zoospores are formed endogenously.
Trace the path a male gamete takes to fertilise a female gamete after being released from the penis.
State the number of sets of chromosomes present in a zygote.
In a plant flower the female whorl is ______.
The figure below shows the concept of double fertilization. Complete the flow chart showing the progress at each step:
Name the reproductive parts of an angiosperm. Where are these parts located? Explain the structure of its male reproductive part.
Type of sexual reproduction is ______.
The pollen tube usually enters the embryo sac ______.
Explain the post fertilization changes that occur in the ovary of a flower.
