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प्रश्न
(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?
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उत्तर
(a) A flower
(b) (i) The corolla
(ii) The calyx
(c) (i) Stamen is the male reproductive organ in a flower.
(ii) Carpel is the female reproductive organ in a flower.
(d) The other name of carpel is pistil.
(e) The yellow powdery substance present in the anther of a flower are pollen grains.
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संबंधित प्रश्न
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
Name the parts labelled as A, B, C and D in the diagram given below:
Sketch the reproductive parts of a flower.
Name the swollen lower part of the carpel.
What is the function of a flower?
Fill in the following blank with suitable word :
The ovary of a flower becomes ....... after fertilisation.
In what ways is fertilisation in a plant different from fertilisation in a human?
What is a flower ? Draw a neat labelled diagram showing the L.S. of a typical flower.
Multiple choice question. Tick (✓) the correct choice:
The male gamete is present inside the which germinates.
- the style
- the stigma
- the anther
- the ovary
State whether the following statement is true (T) or false (F):
Stamens make egg cells.
Mention the function of Anther.
You have to perform the experiment, "To identify the different parts of an embryo of a gram seed." Describe the procedure that you would follow.
Draw a diagram of the longitudinal section of a flower exhibiting germination of pollen on stigma and label (i) ovary, (ii) male germ-cell, (iii) female germ-cell and (iv) ovule on it.
Draw a diagram of a pistil showing pollen tube growth into the ovule and label the following:
Pollen grain, male gamete, female gamete, ovary.
Fill in the blank by selecting suitable word:
Transfer of pollen grains from the anther to the stigma is known as______________.
In which part of the flower germination of pollen grains takes place?
What would be the number of chromosomes of the aleurone cells of a plant with 42 chromosomes in its roots tip cells?
What would be the number of chromosomes in the cells of the aleurone layer in a plant species with 8 chromosomes in its synergids?
Where is the zygote located in the flower after fertilization?
What is the structural unit of sexual reproduction in plant?
