Advertisements
Advertisements
प्रश्न
Fill in the blank by selecting suitable word:
A flower bearing only male or female parts is known as __________ flower.
पर्याय
unisexual
fertilisation
fruit
stamen
anther
bisexual
pollination
seed
ovary
उत्तर
A flower bearing only male or female parts is known as unisexual flower.
APPEARS IN
संबंधित प्रश्न
Explain the term 'fertilisation'.
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?
Multiple choice question. Tick (✓) the correct choice:
Unisexual flowers are found in
- mulberry
- mustard
- pea
- sunflower
What is phototropism?
What is meant by pollination?
Pollen grains from anther are transferred to the stigma.
Write the events involved in the sexual reproduction of a flowering plant.
a. Discuss the first event and write the types.
b. Mention the advantages and the disadvantages of that event.
Gloriosa superba exhibits ______.
Pineapple fruit develops from ______.
Is the chromosome number of zygote, embryonal cells and adult of a particular organism always constant? How is the constancy maintained in these three stages?
