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प्रश्न
Draw a diagram of the longitudinal section of a flower and label the following parts.
Draw a labelled diagram of the longitudinal section of a flower.
Draw a well-labelled diagram of the longitudinal section of a flower.
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उत्तर १
Longitudinal section of a flower:
उत्तर २
Longitudinal section of flower
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
State the function of flowers in the flowering plants.
The fusion of male and female gametes is termed as ______.
The process of fusion of the male and female gametes is called ______.
Name the part made up of the stigma, style and ovary.
What is the function of a flower?
What are the reproductive organs in a flower?
What is the name of female organ of a flower (other than carpel)?
What is made in anther of a flower?
What is made in ovary of a flower?
What is seed?
In tobacco plant, the male gametes have 24 chromosomes.
What is the number of chromosomes in the zygote?
How does pollination occur?
The length of pollen tube depends on the distance between :
(a) pollen grain and upper surface of stigma
(b) pollen grain on upper surface of stigma and ovule
(c) pollen grain in anther and upper surface of stigma
(d) upper surface of stigma and lower part of style
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)
The part of a seed which grows and develops into root on germination is :
(a) cotyledon
(b) plumule
(c) follicle
(d) radicle
Fill in the blank by selecting suitable word:
A flower bearing only male or female parts is known as __________ flower.
What is a flower ? Draw a neat labelled diagram showing the L.S. of a typical flower.
Multiple choice question. Tick (✓) the correct choice:
Unisexual flowers are found in
- mulberry
- mustard
- pea
- sunflower
What are the male and female gametes in a flowering plant?
Draw a labelled diagram of a bisexual flower.
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.
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
A student is asked to study the different parts of an embryo of pea seeds. Given below are the essential steps for the experiment :
(I) Soak the pea seeds in plain water and keep them overnight.
(II) Cut open the soaked seed and observe its different parts.
(III) Take some pea seeds in a petri dish.
(IV) 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) III, I, IV, II
(B) III, IV, I, II
(C) III, I, II, IV
(D) III, II, I, IV
(a) Identify A, B and C in the given diagram and write their functions.
(b) Mention the role of gamete and zygote in sexually reproducing organisms.
“Cell division is a type of reproduction in unicellular organism.” Justify.
Draw a diagram of the longitudinal section of a flower and label on it sepal, petal, ovary and stigma.
Describe an activity to demonstrate phototropism.
Identify the odd. Stigma, Style, Pollen, Ovary.
Sketch the labelled diagram.
Flower with its sexual reproductive organs.
Prepare a slogan for campaign against female foeticide.
Fill in the blanks and rewrite the completed statements:
Lymph flows in _______________ direction.
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?
Bisexual : Hibiscus : : Unisexual : ___________
Accessory whorls : Calyx and corolla : : essential whorls : ______________
Pollen tube reaches the embryo sac via style.
Match the following
| 1. | Petal | Opuntia |
| 2. | Fern | Chrysanthemum |
| 3. | Phylloclade | Attracts insect |
| 4. | Hooks | Spore |
| 5. | Sucker | Bignonia |
The essential parts of a flower are ______.
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.
In which of the following manner the arrangement of megaspores in a tetrad is observed in angiosperms?
Generally, in a pollen tube, which of the following moves to the tip of the tube?
How many middle layers are generally present in the wall of the anther lobes?
Gloriosa superba exhibits ______.
Sperm and egg nuclei fuse due to ______.
The seed that contains the future plant is called the ______
Variations occur as a result of ______
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 ______.
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.
What are the agents for pollination?
Sexual maturation of reproductive tissues and organs are necessary link for reproduction. Elucidate.
In flowering plants, the pollen grains are transferred to stigma by pollination but the female germ cells are present in the ovary.
Explain with the help of a labelled diagram (only concerned parts), how the male germ cell reaches the ovary.
The number of pollen sacs in a dithecous anther is ______.
