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प्रश्न
Name the male part of the flower.
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उत्तर
Stamen is the male part 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 |
A student was asked to observe and identify the various parts of an embryo of a red kidney bean seed. He identified the parts and listed them as under:
I. Tegmen
II. Testa
III. Cotyledon
IV. Radicle
V. Plumule
The correctly identified parts among these are
(A) I, II and III
(B) II, III and IV
(C) III, IV and V
(D) I, III, IV and V
What is pollination?
"The chromosomal number of the sexually producing parents and their offspring is the same." Justify this statement.
State the function of flowers in the flowering plants.
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 ______.
Sketch the reproductive parts of a flower.
How does the process of fertilisation take place in flowers?
Name the part made up of the stigma, style and ovary.
Fill in the following blank with suitable word :
The ovary of a flower becomes ....... after fertilisation.
Draw a neat sketch of the carpel of a flower. Mark in it stigma, style and ovary.
What type of plants reproduce by sexual reproduction method?
What is pollination? How does pollination occur?
Which of the following statements are true for sexual reproduction in flowering plants?
(i) it requires two types of gametes
(ii) fertilisation is a compulsory event
(iii) it always results in the formation of zygote
(iv) offsprings formed are clones
(a) (i) and (iv)
(b) (i), (ii) and (iv)
(c) (i), (ii) and (iii)
(d) (ii), (iii) and (iv)
In the figure given alongside, the parts marked A, B and C are sequentially :
(a) cotyledon, plumule and radicle
(b) plumule, radicle and cotyledon
(c) plumule, cotyledon and radicle
(d) radicle, cotyledon and plumule
The flask-shaped organ A at the centre of a flower is surrounded by a number of little stalks B having swollen tops which lie just inside the ring of petals.
(a) Name A. What are the various parts of A?
(b) Which part of A contains gametes?
(c) Name B. What is the swollen top of B known as?
(d) What does the swollen top of b contain?
(e) Out of A and B, which one is (i) male part, and (ii) female part of the flower?
Put a tick mark (✓) against the correct alternative in the following statement
Pollen is produced in the:
Fill in the blank by selecting suitable word:
A flower bearing only male or female parts is known as __________ 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 Stigma.
What part is played by stamens and carpels in reproduction?
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
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
Explain sexual reproduction in plants.
Draw a diagram of the longitudinal section of a flower and label the following parts.
What is cleistogamy? Write one advantage and one disadvantage of it, to the plant.
Find an odd one out.
Find an odd one out.
Calyx : Sepals : : Corolla : ________________
Bisexual : Hibiscus : : Unisexual : ___________
Pollen grains from anther are transferred to the stigma.
Draw a neat and labelled diagram.
Double fertilization in angiosperms
The ovule of an angiosperm is technically equivalent to ______
Which of the following are the chemical components of the wall of pollen tube?
Identify the female gametophyte in angiosperms.
What would be the number of chromosomes of the aleurone cells of a plant with 42 chromosomes in its roots tip cells?
Sperm and egg nuclei fuse due to ______.
Flowers showing ornithophily show few characteristic like ______.
In a flowering plant, archesporium gives rise to ______.
Pineapple fruit develops from ______.
What would be the number of chromosomes in the cells of the aleurone layer in a plant species with 8 chromosomes in its synergids?
In human beings, fertilization occurs in the ______
Complete the table
| Carly x | ______ | ______ |
| ______ | petal | attract insects |
| Androecium | ______ | Male reproductive part |
| ______ | ______ | Female reproductive part. |
Which among the following statements are true for unisexual flowers?
- They possess both stamen and pistil
- They possess either stamen or pistil
- They exhibit cross pollination
- Unisexual flowers possessing only stamens cannot produce fruits
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?
Draw the diagram of a flower and label the four whorls. Write the names of gamete producing organs in the flower.
The figure below shows the concept of double fertilization. Complete the flow chart showing the progress at each step:
Triple fusion involves ______.
State the post-fertilisation changes that lead to fruit formation in plants.
