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प्रश्न
What is the function of calyx?
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उत्तर
The main function of calyx is to protect the inner whorls of the flower.
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संबंधित प्रश्न
Match the following:
| Column A | Column B |
| (i) Stigma | (a) Neuron |
| (ii) Pepsin | (b) Carpel |
| (iii) Dendrites | (c) Protein |
| (d) Stamen |
How does fertilisation occur in flowers? Name the parts of the flower that develop into (i) seed, and (ii) fruit after fertilisation.
A student has to perform the experiment "To identify the different parts of an embryo of a dicot seed." Select from the following an appropriate group of seeds:
(a) Pea, gram, wheat
(b) Red kidney bean, maize, gram
(c) Maize, wheat, red kidney bean
(d) Red kidney bean, pea, gram
Mention the changes a flower undergoes after fertilisation.
A flower may have either male or female reproductive parts. Such a flower is called ______.
The fusion of male and female gametes is termed as ______.
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.......... .
Draw a neat sketch of the stamen of a flower. Mark in it filament and anther.
Draw a neat sketch of the carpel of a flower. Mark in it stigma, style and ovary.
What is made in anther of a flower?
Explain the terms 'self pollination'
Explain the terms 'cross-pollination'?
How do the insects help in cross-pollination?
How is the process of pollination different from fertilization?
What type of plants reproduce by sexual reproduction method?
What changes take place in the flower after fertilisation which lead to the formation of seeds and fruit?
Which of the following is the correct sequence of events of sexual reproduction in a flower?
(a) pollination, fertilisation, seed, embryo
(b) seed, embryo, fertilisation, pollination
(c) pollination, fertilisation, embryo, seed
(d) embryo, seed, pollination, fertilisation
Which of the following statements are true for flowers?
(i) Flowers are always bisexual.
(ii) They contain sexual reproductive organs.
(iii) They are produced in all groups of plants.
(iv) after fertilization they give rise to fruits.
Multiple choice question. Tick (✓) the correct choice:
Unisexual flowers are found in
- mulberry
- mustard
- pea
- sunflower
Fill in the blank:
Seeds are formed from________.
What part is played by stamens and carpels in reproduction?
Draw a labelled diagram of a bisexual flower.
Identify A, B, C and D in the given diagram and write their names.
Describe an activity to demonstrate phototropism.
Fill in the blanks and rewrite the completed statements:
Lymph flows in _______________ direction.
Answer the following question.
List two agents of pollination?
The essential parts of a flower are ______.
Which type of development is observed in male gametophytes of plants?
The seed that contains the future plant is called the ______
Pollen grains are produced by ______
Complete the table
| Carly x | ______ | ______ |
| ______ | petal | attract insects |
| Androecium | ______ | Male reproductive part |
| ______ | ______ | Female reproductive part. |
State the number of sets of chromosomes present in a zygote.
Double fertilization is exhibited by ______
What are the agents for pollination?
Type of sexual reproduction is ______.
