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प्रश्न
What does germination mean?
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उत्तर १
Zygote utilizes food stored in endosperm of seed and a new plantlet is formed. This is called as seed germination.
उत्तर २
The process through which seeds develop into seedlings is known as germination.
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संबंधित प्रश्न
Name the parts labelled as A, B, C and D in the diagram given below:-
State the function of flowers in the flowering plants.
Sketch the reproductive parts of a flower.
Mature ovary forms the ______.
What is the name of female organ of a flower (other than carpel)?
Fill in the following blank with suitable word :
The term used to refer to the transfer of pollen from the stamen of one flower to the carpel of another flower of the same species is...........
Draw a neat sketch of the stamen of a flower. Mark in it filament and anther.
What type of plants reproduce by sexual reproduction method?
In tobacco plant, the male gametes have 24 chromosomes.
What is the number of chromosomes in the female gamete?
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)
When an insect sits on the flower of a plant then some particles A present in the top of little stalks in the flower attach to its body hair. When this insect now sits on the flower of another similar plant, then particles A attached to the hair of insect are put on the top of a flask-shaped organ at the centre of flower. The particle A grows a long tube b from the top of flask-shaped organ through which C moves down and reaches the bottom part of flask-shaped organ. Here C fuses with the nucleus of d contained in structure E. the fusion of C and D forms a new cell f which grows and develops into a seed of the plant.
(a) What are particles A? What is the process of transferring A from one flower to another flower of similar plant by the insect known as?
(b) What is the name of tube B?
(c) What is C which moves down through the tube B?
(d) Name D and E.
(e) What is F?
Fill in the blank by selecting suitable word:
A flower bearing only male or female parts is known as __________ 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.
Identify A, B, C and D in the given diagram and write their names.
Explain the process of fertilisation in flowers.
Draw a diagram of a pistil showing pollen tube growth into the ovule and label the following:
Pollen grain, male gamete, female gamete, ovary.
Explain sexual reproduction in plants.
Fill in the blank by selecting suitable word:
Transfer of pollen grains from the anther to the stigma is known as______________.
Fill in the blanks and rewrite the completed statements:
Lymph flows in _______________ direction.
Differentiate between self-pollination and cross-pollination.
Answer the following question.
List two agents of pollination?
__________ is present in unisexual flower.
Calyx : Sepals : : Corolla : ________________
Pollen tube reaches the embryo sac via style.
Give scientific reason.
Flower is a structural unit of sexual reproduction in plants.
Give scientific reason.
Fertilization in plants is called double fertilization.
Draw a neat and labelled diagram.
Double fertilization in angiosperms
The male reproductive part of a flower is ______.
Identify the parts A, B, C, and D?
Write the events involved in the sexual reproduction of a flowering plant.
Discuss the first event and write the types.
Which of the following is the outermost protective layer of anther?
Pineapple fruit develops from ______.
The flower of the Hibiscus plant is ______
In a bisexual flower inspite of the young stamens being removed artificially, the flower produces fruit. Provide a suitable explanation for the above situation.
Double fertilization is exhibited by ______
What is the structural unit of sexual reproduction in plant?
Triple fusion involves ______.
Explain the post fertilization changes that occur in the ovary of a flower.
The number of pollen sacs in a dithecous anther is ______.
