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प्रश्न
Sketch the labelled diagram.
Flower with its sexual reproductive organs.
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उत्तर
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संबंधित प्रश्न
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
Mention the changes a flower undergoes after fertilisation.
A flower may have either male or female reproductive parts. Such a flower is called ______.
Where are the pollen grains produced?
Fill in the following blank with suitable word :
Ovules contain ......... gametes of a plant.
Fill in the following blank with suitable word :
The ovule becomes a .......... after fertilisation.
Fill in the following blank with suitable word :
Flowering plants reproduce by ...........method of reproduction.
What is made in ovary of a flower?
In tobacco plant, the male gametes have 24 chromosomes.
What is the number of chromosomes in the zygote?
What is meant by ‘unisexual flowers’?
Describe the process of fertilisation in a flower with the help of labelled diagrams.
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:
State whether the following statement is true (T) or false (F):
Stamens make egg cells.
What are the male and female gametes in a flowering plant?
What part is played by stamens and carpels in reproduction?
Draw a labelled diagram of a bisexual flower.
Which of the following is not an unisexual flower?
a) Coconut
b) Papaya
c) Gulmohor
d) Maize
Prepare a slogan for campaign against female foeticide.
Fill in the blanks and rewrite the completed statements:
Lymph flows in _______________ direction.
What is cleistogamy? Write one advantage and one disadvantage of it, to the plant.
Calyx : Sepals : : Corolla : ________________
The male reproductive part of a flower is ______.
Match the following
| 1. | Petal | Opuntia |
| 2. | Fern | Chrysanthemum |
| 3. | Phylloclade | Attracts insect |
| 4. | Hooks | Spore |
| 5. | Sucker | Bignonia |
Write the events involved in the sexual reproduction of a flowering plant.
Discuss the first event and write the types.
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 part of the flower germination of pollen grains takes place?
The ovule of an angiosperm is technically equivalent to ______
Pineapple fruit develops from ______.
The flower of the Hibiscus plant is ______
Length of pollen tube depends on the distance between ______
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?
Double fertilization is essential for formation of ______.
Give any two examples of agents of pollination.
The number of pollen sacs in a dithecous anther is ______.
