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Question
Sketch and label the essential and accessory whorls of flower.
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Solution
RELATED QUESTIONS
"The chromosomal number of the sexually producing parents and their offspring is the same." Justify this statement.
Give one example of a unisexual flower.
A flower may have either male or female reproductive parts. Such a flower is called ______.
Explain what you understand by sexual reproduction.
Sketch the reproductive parts of a flower.
How does the process of fertilisation take place in flowers?
The reproductive part of a plant is the ______.
The process of fusion of the male and female gametes is called ______.
Name the swollen lower part of the carpel.
Name the male part of the flower.
Where is the female gamete formed in flowering plants?
Draw a neat sketch of the stamen of a flower. Mark in it filament and anther.
What is made in anther of a flower?
Describe the process of fertilisation in a flower with the help of labelled diagrams.
What changes take place in the flower after fertilisation which lead to the formation of seeds and fruit?
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)
In a bisexual flower, inspite of the young stamens being removed artificially, the flower produces fruit. Explain.
In what ways is fertilisation in a plant different from fertilisation in a human?
Multiple choice question. Tick (✓) the correct choice:
Unisexual flowers are found in
- mulberry
- mustard
- pea
- sunflower
Multiple choice question. Tick (✓) the correct choice:
The male gamete is present inside the which germinates.
- the style
- the stigma
- the anther
- the ovary
Mention the function of Stigma.
Draw a labelled diagram of a bisexual flower.
You have to perform the experiment, "To identify the different parts of an embryo of a gram seed." Describe the procedure that you would follow.
Explain the process of fertilisation in flowers.
“Cell division is a type of reproduction in unicellular organism.” Justify.
Distinguish between unisexual and bisexual flowers giving one example of each. Draw a diagram showing process of germination of pollen grains on stigma and label the following parts:
(a) Female germ cell
(b) Male germ cell
(c) Ovary
Draw a diagram of the longitudinal section of a flower and label on it sepal, petal, ovary and stigma.
What is cleistogamy? Write one advantage and one disadvantage of it, to the plant.
What is meant by pollination?
__________ is present in unisexual flower.
Calyx : Sepals : : Corolla : ________________
Give scientific reason.
Fertilization in plants is called double fertilization.
Flowers showing ornithophily show few characteristic like ______.
The flower of the Hibiscus plant is ______
Variations occur as a result of ______
Double fertilization is essential for formation of ______.
In a plant flower the female whorl is ______.
Triple fusion involves ______.
- Assertion: Primary endosperm nucleus is diploid.
- Reason: It is the product of double fertilisation.
