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प्रश्न
Define.
Inflorescence
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उत्तर
A specialised axis or branch over which flowers are produced or borne in definite manner is known as inflorescence.
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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.
In the following diagram showing the structure of embryo of a dicot seed, what are the parts marked I, II and III sequentially?
Name and differentiate between the two modes of pollination in flowering plants.
A student identified the various parts of an embryo of a gram seed and listed them as given below :
(I) Testa
(II) Plumule
(III) Radicle
(IV) Cotyledon
(V) Tegmen
Out of these the actual parts of the embryo are :
(A) I, II, III
(B) II, III, IV
(C) III, IV, V
(D) II, IV, V
Give one example of a unisexual flower.
How is the process of pollination different from fertilization?
A flower may have either male or female reproductive parts. Such a flower is called ______.
Where is the female gamete formed in flowering plants?
Draw a neat sketch of the stamen of a flower. Mark in it filament and anther.
Explain the terms 'self pollination'
Name the part of a seed which grows into root.
What is meant by 'unisexual flowers' and 'bisexual flowers'? Give two examples of each.
What is pollination? How does pollination occur?
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.
What is a flower ? Draw a neat labelled diagram showing the L.S. of a typical flower.
Fill in the blanks:
A stamen 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.
What is phototropism?
A student is observing the temporary mount of a leaf peel under a microscope. Draw a labelled diagram of the structure of stomata as seen under the microscope
What is meant by pollination?
Find an odd one out.
Accessory whorls : Calyx and corolla : : essential whorls : ______________
Write the functions of sepals
Give scientific reason.
Flower is a structural unit of sexual reproduction in plants.
Match the following
| 1. | Petal | Opuntia |
| 2. | Fern | Chrysanthemum |
| 3. | Phylloclade | Attracts insect |
| 4. | Hooks | Spore |
| 5. | Sucker | Bignonia |
How many middle layers are generally present in the wall of the anther lobes?
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 ______
Complete the table
| Carly x | ______ | ______ |
| ______ | petal | attract insects |
| Androecium | ______ | Male reproductive part |
| ______ | ______ | Female reproductive part. |
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.
Double fertilization is essential for formation of ______.
Triple fusion involves ______.
Name the reproductive parts of an angiosperm. Where are these parts located? Explain the structure of its male reproductive part.
