Advertisements
Advertisements
Questions
Mention pollination types.
Explain the different types of pollination.
Advertisements
Solution
- Self-pollination: It is the transfer of pollen grains from the anther to the stigma of the same flower or another flower on the same plant.
- Cross-pollination: It is the transfer of pollen grains from the anther to the stigma of the flower present on two different plants.
APPEARS IN
RELATED QUESTIONS
In the following diagram showing the structure of embryo of a dicot seed, what are the parts marked I, II and III sequentially?

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.
Name the parts labelled as A, B, C and D in the diagram given below:

Mention the changes a flower undergoes after fertilisation.
The anther contains ______.
Explain what you understand by sexual reproduction.
State the name of the functional unit concerned with sexual reproduction.
Name the swollen lower part of the carpel.
Where are the pollen grains produced?
Where are a plant's sex organs located?
What are the reproductive organs in a flower?
Fill in the following blank with suitable word :
Ovules contain ......... gametes of a plant.
Fill in the following blank with suitable word :
The male organ of reproduction in the flower is the.......... .
What is made in ovary of a flower?
How do the insects help in cross-pollination?
Give some examples of different modes of fertilisation in nature?
What is seed?
The part of a seed which grows and develops into root on germination is :
(a) cotyledon
(b) plumule
(c) follicle
(d) radicle
Multiple choice question. Tick (✓) the correct choice:
Unisexual flowers are found in
- mulberry
- mustard
- pea
- sunflower
What are the male and female gametes in a flowering plant?
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.
Fill in the blanks and rewrite the completed statements:
Lymph flows in _______________ direction.
__________ is present in unisexual flower.
Bisexual : Hibiscus : : Unisexual : ___________
Define.
Inflorescence
Explain the sexual reproduction process in plants with a diagram.
In which of the following manner the arrangement of megaspores in a tetrad is observed in angiosperms?
Antipodal cells are present towards the ______ in an anatropous ovule.
Pineapple fruit develops from ______.
Conidia are formed endogenously while zoospores are formed endogenously.
The seed that contains the future plant is called the ______
In human beings, fertilization occurs in the ______
In a plant flower the female whorl is ______.
What is the structural unit of sexual reproduction in plant?
What is the function of calyx?
Type of sexual reproduction is ______.
