Advertisements
Advertisements
प्रश्न
Which of the following is not an unisexual flower?
a) Coconut
b) Papaya
c) Gulmohor
d) Maize
Advertisements
उत्तर
c) Gulmohor
APPEARS IN
संबंधित प्रश्न
How does fertilisation occur in flowers? Name the parts of the flower that develop into (i) seed, and (ii) fruit after fertilisation.
Write the names of those parts of a flower which serve the same function as the following do in the animals :
(i) testis,
(ii) sperm,
(iii) ovary,
(iv) egg
Explain what you understand by sexual reproduction.
How does the process of fertilisation take place in flowers?
Name the swollen lower part of the carpel.
Where are the pollen grains produced?
Where is the male gamete formed in flowering plants?
Where is the female gamete formed in flowering plants?
Draw a neat sketch of the carpel of a flower. Mark in it stigma, style and ovary.
What is made in anther of a flower?
Name the part of a seed which grows into shoot.
What is meant by ‘unisexual flowers’?
Which of the following statements are true for flowers?
(i) Flowers are always bisexual.
(ii) They contain sexual reproductive organs.
(iii) They are produced in all groups of plants.
(iv) after fertilization they give rise to fruits.
The part of a seed which grows and develops into root on germination is :
(a) cotyledon
(b) plumule
(c) follicle
(d) radicle
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 carpel 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
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.
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.
Explain sexual reproduction in plants.
Differentiate between self-pollination and cross-pollination.
Find an odd one out.
Define.
Inflorescence
Distinguish between self-pollination and cross-pollination.
The male reproductive part of a flower is ______.
Match the following
| 1. | Petal | Opuntia |
| 2. | Fern | Chrysanthemum |
| 3. | Phylloclade | Attracts insect |
| 4. | Hooks | Spore |
| 5. | Sucker | Bignonia |
In which of the following manner the arrangement of megaspores in a tetrad is observed in angiosperms?
Which of the following is the outermost protective layer of anther?
Generally, in a pollen tube, which of the following moves to the tip of the tube?
What would be the number of chromosomes in the cells of the aleurone layer in a plant species with 8 chromosomes in its synergids?
Conidia are formed endogenously while zoospores are formed endogenously.
Pollen grains are produced by ______
Length of pollen tube depends on the distance between ______
In flowering plants, the pollen grains are transferred to stigma by pollination but the female germ cells are present in the ovary.
Explain with the help of a labelled diagram (only concerned parts), how the male germ cell reaches the ovary.
Given below is a diagram of a germinating seed. Label the parts that:
- gives rise to future shoot.
- gives rise to future root system.
- stores food.
