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प्रश्न
What is meant by ‘unisexual flowers’?
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उत्तर
Unisexual flowers are flowers that have only one type of reproductive organ, either stamens (male) or carpels (female), but not both.
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संबंधित प्रश्न
Name the parts labelled as A, B, C and D in the diagram given below:-
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
The anther contains ______.
Mature ovary forms the ______.
Fill in the following blank with suitable word :
The male organ of reproduction in the flower is the.......... .
Draw a neat sketch of the stamen of a flower. Mark in it filament and anther.
In tobacco plant, the male gametes have 24 chromosomes.
What is the number of chromosomes in the female gamete?
Fill in the blank by selecting suitable word:
A flower that bears both the male and the female parts is known as __________ flower.
State whether the following statement is true (T) or false (F):
Flowers which possess stamens and carpel are called unisexual.
Draw a labelled diagram of a bisexual flower.
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.
Describe an activity to demonstrate phototropism.
A student is observing the temporary mount of a leaf peel under a microscope. Draw a labelled diagram of the structure of stomata as seen under the microscope
Find the odd one out:
Pollen grains are formed by _________ division in locules of anthers.
Distinguish between self-pollination and cross-pollination.
The process of release of eggs from the ovary is called ______
Variations occur as a result of ______
Sexual maturation of reproductive tissues and organs are necessary link for reproduction. Elucidate.
- Assertion: Primary endosperm nucleus is diploid.
- Reason: It is the product of double fertilisation.
