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प्रश्न
Identify the parts A, B, C, and D?
आकृती
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उत्तर
The parts A, B, C, and D are:
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या प्रश्नात किंवा उत्तरात काही त्रुटी आहे का?
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संबंधित प्रश्न
State significance of pollination.
Where is the male gamete formed in flowering plants?
What is meant by ‘unisexual flowers’?
Describe the process of fertilisation in a flower with the help of labelled diagrams.
| When an insect sits on the flower of a plant then somene 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. |
- 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?
- What is the name of tube B?
- What is C which moves down through the tube B?
- Name D and E.
- What is F?
“Cell division is a type of reproduction in unicellular organism.” Justify.
Find the odd one out:
Sperm and egg nuclei fuse due to ______.
What would be the number of chromosomes in the cells of the aleurone layer in a plant species with 8 chromosomes in its synergids?
Trace the path a male gamete takes to fertilise a female gamete after being released from the penis.
