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प्रश्न
Write the functions of sepals
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उत्तर
Sepals are responsible for the protection of inner whorls.
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संबंधित प्रश्न
Sketch the reproductive parts of a flower.
State the name of the functional unit concerned with sexual reproduction.
Where are the pollen grains produced?
Where are a plant's sex organs located?
Where is the female gamete formed in flowering plants?
Fill in the following blank with suitable word :
Pollen grains contain ............ gametes of a plant.
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.......... .
Explain the terms 'cross-pollination'?
How do the insects help in cross-pollination?
(a) Draw a neat diagram of a flower showing its various parts. In this diagram mark stem, receptacle, sepals, petals, stamen and carpel.
(b) What name is given to (i) all the petals of a flower, and (ii) all the sepals of a flower?
(c) What are (i) stamen, and (ii) carpel, in a flower?
(d) What is the other name of carpel of a flower?
(e) What is the name of yellow powdery substance present in the anther of a flower?
In the figure given alongside, the parts marked A, B and C are sequentially:
Fill in the blanks:
A carpel consists of ________ , ________ and ________.
Fill in the blanks:
A stamen consists of ______ and ________.
Mention the function of Stigma.
Draw a labelled diagram of a bisexual flower.
The students of a class were asked by the teacher to study the different parts of an embryo of an angiosperm. Given below are the essential steps for the experiment :
A. Soak the seeds in plain water and keep them overnight.
B. Cut open the soaked seed and observe its different parts.
C. Take some healthy seeds in a petri-dish.
D. Drain the excess water, cover the seeds with a wet cotton cloth and leave them as it is for a day.
The correct sequence of these steps is
(a) C, A, D, B
(b) C, D, A, B
(c) A, C, D, B
(d) A, C, B, D
“Cell division is a type of reproduction in unicellular organism.” Justify.
Fill in the blanks and rewrite the completed statements:
Lymph flows in _______________ direction.
Mention pollination types.
Find an odd one out.
Calyx : Sepals : : Corolla : ________________
What does germination mean?
How many middle layers are generally present in the wall of the anther lobes?
What would be the number of chromosomes of the aleurone cells of a plant with 42 chromosomes in its roots tip cells?
Gloriosa superba exhibits ______.
In a flowering plant, archesporium gives rise to ______.
The flower of the Hibiscus plant is ______
The seed that contains the future plant is called the ______
Which among the following statements are true for sexual reproduction in flowering plants?
- It requires two types of gametes
- Fertilisation is a compulsory event
- It always results in formation of zygote
- Offspring formed are clones
Where is the zygote located in the flower after fertilization?
Draw the diagram of a flower and label the four whorls. Write the names of gamete producing organs in the flower.
The ovaries of different flowers may contain ______.
What is the structural unit of sexual reproduction in plant?
The figure below shows the concept of double fertilization. Complete the flow chart showing the progress at each step:
Consider the following three flowers namely X, Y and Z. Which flower(s) would develop into a fruit?
| Flower X | Flower Y | Flower Z |
 |
 |
 |
Explain the post fertilization changes that occur in the ovary of a flower.
In male reproductive whorl of a flower the archesporial cells are formed by ______.
