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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:-
The anther contains ______.
How does the process of fertilisation take place in flowers?
The process of fusion of the male and female gametes is called ______.
Name the swollen lower part of the carpel.
Where are the pollen grains produced?
What is the function of a flower?
Fill in the following blank with suitable word :
Pollen grains contain ............ gametes of a plant.
Explain the terms 'cross-pollination'?
How is the process of pollination different from fertilization?
Put a tick mark (✓) against the correct alternative in the following statement
Pollen is produced in the:
What is a flower ? Draw a neat labelled diagram showing the L.S. of a typical flower.
Give one example each of unisexual and bisexual flowers. Differentiate between the two types of pollination that occur in flowers. What happens when a pollen lands on a suitable stigma? Write about the events that occur till the seed formation in the ovary.
Identify A, B, C and D in the given diagram and write their names.
Explain the process of fertilisation in flowers.
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
Draw a diagram of the longitudinal section of a flower and label on it sepal, petal, ovary and stigma.
Write the names of male and female reproductive parts of a flower.
Describe an activity to demonstrate phototropism.
List any two differences between pollination and fertilization.
Prepare a slogan for campaign against female foeticide.
Fill in the blanks and rewrite the completed statements:
Lymph flows in _______________ direction.
Pollen tube reaches the embryo sac via style.
Pollen grains from anther are transferred to the stigma.
Write the functions of sepals
Give scientific reason.
Fertilization in plants is called double fertilization.
Distinguish between self-pollination and cross-pollination.
Where does the endothecium layer of anther lobes is present?
The anther wall consists of four wall layers where ______
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?
Flowers showing ornithophily show few characteristic like ______.
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?
State the number of sets of chromosomes present in a zygote.
Double fertilization means ______.
Sketch and label the essential and accessory whorls of flower.
What are the agents for pollination?
Triple fusion involves ______.
