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प्रश्न
Accessory whorls : Calyx and corolla : : essential whorls : ______________
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उत्तर
Accessory whorls : Calyx and corolla : : essential whorls : Androecium and gynoecium
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संबंधित प्रश्न
Name the parts labelled as A, B, C and D in the diagram given below:-
How does fertilisation occur in flowers? Name the parts of the flower that develop into (i) seed, and (ii) fruit after fertilisation.
A student while observing an embryo of a pea seed in the laboratory listed various parts of the embryo as given below:
Testa, Tegmen, Radicle, Plumule, Micropyle, Cotyledon.
On examining the list the teacher remarked that only three parts are correct. Select three correct parts from the above list:
(a) Testa, Radicle, Cotyleddon
(b) Tegmen, Radicle, Micropyle
(c) Cotyledon, Plumule, Testa
(d) Radicle, Cotyledon, Plumule
Name the parts A, B and C shown in the following diagram and state one function of each.
State significance of pollination.
Name the parts labelled as A, B, C and D in the diagram given below:
Mention the changes a flower undergoes after fertilisation.
What is the function of a flower?
What are the reproductive organs in a flower?
Explain the terms 'self pollination'
Describe the process of fertilisation in a flower with the help of labelled diagrams.
Which of the following is the correct sequence of events of sexual reproduction in a flower?
(a) pollination, fertilisation, seed, embryo
(b) seed, embryo, fertilisation, pollination
(c) pollination, fertilisation, embryo, seed
(d) embryo, seed, pollination, fertilisation
One of the following occurs in the reproductive system of flowering plants as well as that of humans. This is :
(a) vas deferens
(b) anther
(c) ovary
(d) style
The flask-shaped organ A at the centre of a flower is surrounded by a number of little stalks B having swollen tops which lie just inside the ring of petals.
(a) Name A. What are the various parts of A?
(b) Which part of A contains gametes?
(c) Name B. What is the swollen top of B known as?
(d) What does the swollen top of b contain?
(e) Out of A and B, which one is (i) male part, and (ii) female part of the flower?
Put a tick mark (✓) against the correct alternative in the following statement
Reproductive whorls of a flower are:
Multiple choice question. Tick (✓) the correct choice:
Unisexual flowers are found in
- mulberry
- mustard
- pea
- sunflower
Fill in the blanks:
A carpel consists of ________ , ________ and ________.
What are the male and female gametes in a flowering plant?
“Cell division is a type of reproduction in unicellular organism.” Justify.
Write the names of male and female reproductive parts of a flower.
Differentiate between self-pollination and cross-pollination.
What is cleistogamy? Write one advantage and one disadvantage of it, to the plant.
__________ is present in unisexual flower.
What does germination mean?
Explain the sexual reproduction process in plants with a diagram.
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 type of development is observed in male gametophytes of plants?
Flowers showing ornithophily show few characteristic like ______.
In human beings, fertilization occurs in the ______
Double fertilization is essential for formation of ______.
Double fertilization means ______.
What is the structural unit of sexual reproduction in plant?
Type of sexual reproduction is ______.
State the post-fertilisation changes that lead to fruit formation in plants.
