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प्रश्न
Which of the following is not an unisexual flower?
a) Coconut
b) Papaya
c) Gulmohor
d) Maize
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उत्तर
c) Gulmohor
APPEARS IN
संबंधित प्रश्न
Match the following:
| Column A | Column B |
| (i) Stigma | (a) Neuron |
| (ii) Pepsin | (b) Carpel |
| (iii) Dendrites | (c) Protein |
| (d) Stamen |
Give one example of a unisexual flower.
State the function of flowers in the flowering plants.
How does the process of fertilisation take place in flowers?
Name the part made up of the stigma, style and ovary.
Fill in the following blank with suitable word :
Pollen grains contain ............ gametes of a plant.
Fill in the following blank with suitable word :
The ovary of a flower becomes ....... after fertilisation.
Fill in the following blank with suitable word :
The female organ of reproduction in the flower is the...........
Explain the terms 'self pollination'
Explain the terms 'cross-pollination'?
How do the insects help in cross-pollination?
Name the part of a seed which contains stored food.
In tobacco plant, the male gametes have 24 chromosomes.
What is the number of chromosomes in the zygote?
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 what ways is fertilisation in a plant different from fertilisation in a human?
Put a tick mark (✓) against the correct alternative in the following statement
Pollen is produced in the:
Fill in the blanks:
A stamen consists of ______ and ________.
State whether the following statement is true (T) or false (F):
Flowers which possess stamens and carpel are called unisexual.
Find the odd-one out, giving reason:
Anther, pollen grain, ovule male gamete
Mention the function of Anther.
What are the male and female gametes in a flowering plant?
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.
Draw a diagram of a pistil showing pollen tube growth into the ovule and label the following:
Pollen grain, male gamete, female gamete, ovary.
Draw a diagram of the longitudinal section of a flower and label the following parts.
What is cleistogamy? Write one advantage and one disadvantage of it, to the plant.
What is meant by pollination?
Calyx : Sepals : : Corolla : ________________
Bisexual : Hibiscus : : Unisexual : ___________
Define.
Inflorescence
Where does the endothecium layer of anther lobes is present?
In which of the following manner the arrangement of megaspores in a tetrad is observed in angiosperms?
Which type of development is observed in male gametophytes of plants?
Gloriosa superba exhibits ______.
Pineapple fruit develops from ______.
Variations occur as a result of ______
Where is the zygote located in the flower after fertilization?
What is the function of calyx?
