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प्रश्न
In the figure given alongside, the parts marked A, B and C are sequentially :
(a) cotyledon, plumule and radicle
(b) plumule, radicle and cotyledon
(c) plumule, cotyledon and radicle
(d) radicle, cotyledon and plumule
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उत्तर
(c) plumule, cotyledon and radicle
A represents the plumule which forms the shoot. B represents the cotyledon and C represents the radicle which forms the roots.
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संबंधित प्रश्न
Name the parts labelled as A, B, C and D in the diagram given below:-
What is pollination?
Name and differentiate between the two modes of pollination in flowering plants.
How does the process of fertilisation take place in flowers?
State the name of the functional unit concerned with sexual reproduction.
Fill in the following blank with suitable word :
The.......... at the base of the carpel contains egg cells.
Explain the term 'fertilisation'.
What type of plants reproduce by sexual reproduction method?
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
When an insect sits on the flower of a plant then some particles A present in the top of little stalks in the flower attach to its body hair. When this insect now sits on the flower of another similar plant, then particles A attached to the hair of insect are put on the top of a flask-shaped organ at the centre of flower. The particle A grows a long tube b from the top of flask-shaped organ through which C moves down and reaches the bottom part of flask-shaped organ. Here C fuses with the nucleus of d contained in structure E. the fusion of C and D forms a new cell f which grows and develops into a seed of the plant.
(a) What are particles A? What is the process of transferring A from one flower to another flower of similar plant by the insect known as?
(b) What is the name of tube B?
(c) What is C which moves down through the tube B?
(d) Name D and E.
(e) What is F?
Mention the function of Anther.
Sketch the labelled diagram.
Flower with its sexual reproductive organs.
Mention pollination types.
Match the following
| 1. | Petal | Opuntia |
| 2. | Fern | Chrysanthemum |
| 3. | Phylloclade | Attracts insect |
| 4. | Hooks | Spore |
| 5. | Sucker | Bignonia |
Flowers showing ornithophily show few characteristic like ______.
Pollen grains are produced by ______
Which among the following statements are true for sexual reproduction in flowering plants?
- It requires two types of gametes
- Fertilisation is a compulsory event
- It always results in formation of zygote
- Offspring formed are clones
In a plant flower the female whorl is ______.
The number of pollen sacs in a dithecous anther is ______.
