Advertisements
Advertisements
प्रश्न
What does germination mean?
Advertisements
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.
APPEARS IN
संबंधित प्रश्न
Name the parts A, B and C shown in the diagram and write their functions.
State significance of pollination.
Mention the changes a flower undergoes after fertilisation.
You are asked by your teacher to study the different parts of an embryo of a gram seed. Given below are the steps to be followed for the experiment:
I. Soak the gram seeds in plain water and keep them overnight.
II. Cut open a soaked seed and observe its different parts.
III. Take some dry gram seeds in a petri dish.
IV. Drain the excess water.
V. Cover the soaked seeds with a wet cotton cloth and leave them for a day.
The correct sequence of these steps is :
(A) III, I, V, IV, II
(B) III, I, II, IV, V
(C) III, IV, V, I, II
(D) III, I, IV, V, II
The anther contains ______.
The fusion of male and female gametes is termed as ______.
Mature ovary forms the ______.
Fill in the following blank with suitable word :
Pollen grains contain ............ gametes of a plant.
Fill in the following blank with suitable word :
The ovule becomes a .......... after fertilisation.
Draw a neat sketch of the stamen of a flower. Mark in it filament and anther.
Name the part of a seed which grows into shoot.
In tobacco plant, the male gametes have 24 chromosomes.
What is the number of chromosomes in the female gamete?
Which of the following is the correct sequence of events of sexual reproduction in a flower?
(a) pollination, fertilisation, seed, embryo
(b) seed, embryo, fertilisation, pollination
(c) pollination, fertilisation, embryo, seed
(d) embryo, seed, pollination, fertilisation
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
Multiple choice question. Tick (✓) the correct choice:
Unisexual flowers are found in
- mulberry
- mustard
- pea
- sunflower
What part is played by stamens and carpels in reproduction?
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
Identify A, B, C and D in the given diagram and write their names.
Identify the odd. Stigma, Style, Pollen, Ovary.
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.
What is meant by pollination?
Find the odd one out:
Find an odd one out.
Pollen tube reaches the embryo sac via style.
Write the functions of sepals
The essential parts of a flower are ______.
Gloriosa superba exhibits ______.
The seed that contains the future plant is called the ______
Where is the zygote located in the flower after fertilization?
Trace the path a male gamete takes to fertilise a female gamete after being released from the penis.
Double fertilization is essential for formation of ______.
Give any two examples of agents of pollination.
In a plant flower the female whorl is ______.
