Advertisements
Advertisements
प्रश्न
What is the structural unit of sexual reproduction in plant?
Advertisements
उत्तर
Flower is the structural unit of the sexual reproduction in plant.
APPEARS IN
संबंधित प्रश्न
(i) Name the part marked 'A' in the diagram.
(ii) How dose 'A' reachese part 'B'?
(iii) State the importance of the part 'C'.
(iv) What happens to the part marked 'D' after fertilisation is over?
A student has to perform the experiment "To identify the different parts of an embryo of a dicot seed." Select from the following an appropriate group of seeds:
(a) Pea, gram, wheat
(b) Red kidney bean, maize, gram
(c) Maize, wheat, red kidney bean
(d) Red kidney bean, pea, gram
Name and differentiate between the two modes of pollination in flowering plants.
State the function of flowers in the flowering plants.
How does the process of fertilisation take place in flowers?
The process of fusion of the male and female gametes is called ______.
Mature ovary forms the ______.
Fill in the following blank with suitable word :
The ovule becomes a .......... after fertilisation.
Fill in the following blank with suitable word :
The male organ of reproduction in the flower is the.......... .
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?
What changes take place in the flower after fertilisation which lead to the formation of seeds and fruit?
One of the following occurs in the reproductive system of flowering plants as well as that of humans. This is :
(a) vas deferens
(b) anther
(c) ovary
(d) style
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)
The correct sequence of reproductive stages occurring in flowering plants is ______.
In a bisexual flower, inspite of the young stamens being removed artificially, the flower produces fruit. Explain.
State whether the following statement is true (T) or false (F):
Flowers which possess stamens and carpel are called unisexual.
What are the male and female gametes in a flowering plant?
Sketch the labelled diagram.
Flower with its sexual reproductive organs.
Answer the following question.
How does suitable pollination lead to fertilization?
Pollen tube reaches the embryo sac via style.
Write the functions of sepals
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 ______
Generally, in a pollen tube, which of the following moves to the tip of the tube?
In a flowering plant, archesporium gives rise to ______.
Pineapple fruit develops from ______.
Length of pollen tube depends on the distance between ______
Complete the table
| Carly x | ______ | ______ |
| ______ | petal | attract insects |
| Androecium | ______ | Male reproductive part |
| ______ | ______ | Female reproductive part. |
In a bisexual flower inspite of the young stamens being removed artificially, the flower produces fruit. Provide a suitable explanation for the above situation.
Draw the diagram of a flower and label the four whorls. Write the names of gamete producing organs in the flower.
Trace the path a male gamete takes to fertilise a female gamete after being released from the penis.
Double fertilization is exhibited by ______
In flowering plants, the pollen grains are transferred to stigma by pollination but the female germ cells are present in the ovary.
Explain with the help of a labelled diagram (only concerned parts), how the male germ cell reaches the ovary.
Type of sexual reproduction is ______.
Consider the following three flowers namely X, Y and Z. Which flower(s) would develop into a fruit?
| Flower X | Flower Y | Flower Z |
 |
 |
 |
State the post-fertilisation changes that lead to fruit formation in plants.
