Advertisements
Advertisements
प्रश्न
Distinguish between self-pollination and cross-pollination.
Advertisements
उत्तर
In self-pollination, only one or two flowers borne on the same plant are involved, whereas in cross-pollination two flowers borne on two plants of same species are involved.
APPEARS IN
संबंधित प्रश्न
Name the parts labelled as A, B, C and D in the diagram given below:-
What is pollination?
In the following diagram showing the structure of embryo of a dicot seed, what are the parts marked I, II and III sequentially?
"The chromosomal number of the sexually producing parents and their offspring is the same." Justify this statement.
Mention the changes a flower undergoes after fertilisation.
The anther contains ______.
Name the part made up of the stigma, style and ovary.
Where are the pollen grains produced?
Fill in the following blank with suitable word :
The ovule becomes a .......... after fertilisation.
Fill in the following blank with suitable word :
The female organ of reproduction in the flower is the...........
Draw a neat sketch of the stamen of a flower. Mark in it filament and anther.
Draw a neat sketch of the carpel of a flower. Mark in it stigma, style and ovary.
What is made in ovary of a flower?
How is the process of pollination different from fertilization?
In tobacco plant, the male gametes have 24 chromosomes.
What is the number of chromosomes in the zygote?
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
The part of a seed which grows and develops into root on germination is :
(a) cotyledon
(b) plumule
(c) follicle
(d) radicle
In a bisexual flower, inspite of the young stamens being removed artificially, the flower produces fruit. Explain.
What is a flower ? Draw a neat labelled diagram showing the L.S. of a typical flower.
Multiple choice question. Tick (✓) the correct choice:
Unisexual flowers are found in
- mulberry
- mustard
- pea
- sunflower
Mention the function of Anther.
What part is played by stamens and carpels in reproduction?
Draw a diagram of the longitudinal section of a flower exhibiting germination of pollen on stigma and label (i) ovary, (ii) male germ-cell, (iii) female germ-cell and (iv) ovule on it.
Identify the odd. Stigma, Style, Pollen, Ovary.
Prepare a slogan for campaign against female foeticide.
Mention pollination types.
Differentiate between self-pollination and cross-pollination.
__________ is present in unisexual flower.
Give scientific reason.
Flower is a structural unit of sexual reproduction in plants.
Explain the sexual reproduction process in plants with a diagram.
Observe the figure below. Write functions of the labelled parts.
The anther wall consists of four wall layers where ______
Which type of development is observed in male gametophytes of plants?
Gloriosa superba exhibits ______.
Variations occur as a result of ______
What is the function of calyx?
Triple fusion involves ______.
