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प्रश्न
Read the following paragraph and write the answers to the questions based on it.
Reproduction is an important process for the survival of an organism. Asexual reproduction occurs in different ways in plants. E.g. Vegetative propagation, fragmentation, budding, spore formation etc. Gametes are formed for sexual reproduction. In the animal kingdom, various methods like budding, binary fission, and parthenogenesis are used. There is no difference between males and females in the animals in which these methods are observed. The method of regeneration also creates new organisms. But regeneration is not the real method of reproduction. Regeneration is the process of healing wounds, creating new organs. This ability has completely disappeared in the developed animals. Modern research is being done on the method of sexual reproduction, e.g. Cloning. So, in the future women will be able to create their own offspring without a father.
- How do living organisms maintain their own species continuity?
- What are the methods of asexual reproduction in animals?
- Why is it said that regeneration is not the real method of reproduction?
- What are the different methods of reproduction in plants?
- What modern breeding methods are being researched in developed animals?
उत्तर
- Through the process of reproduction living organisms are able to maintain the continuity of their own species.
- Budding and parthenogenesis are the methods of asexual reproduction in animals.
- Regeneration is the process of healing wounds, creating new organs. This ability has completely disappeared in the developed (higher) animals. Hence, regeneration is not the real method of reproduction.
- Vegetative propagation, fragmentation, budding, spore formation are the different methods of reproduction in plants.
- Cloning is a modern breeding method being researched in developed animals.
संबंधित प्रश्न
One of the following does not reproduce by spore formation method. This is :
(a) Rhizopus fungus
(b) Penicillium fungus
(c) Yeast fungus
(d) Mucor fungus
Write the type of asexual reproduction shown in the figure.
Draw a neat diagram of the structure of chromosome and label the parts :
1) Centromere
2) p-arm
In the following figure, explain how new fungal colonies mucor are formed:
Identify and state the type of reproduction represented in the above figure.
Short answer question.
Write a note on budding in Hydra.
Short answer question.
Explain the different methods of reproduction occurring in sponges.
What is lactation? Which hormone is responsible for its regular secretion?
Amoeba : fission : : Hydra : ____________
Define.
Regeneration
Write the name of the type of reproduction in the following figure.
Mention the different types of asexual reproduction.
______ organisms without back bone.
______ is the breaking of an individual into parts followed by regeneration.
Although 2 cells called gametes fuse, the product formed is a single cell called zygote. Justify.
Which of the following pairs is not correctly matched?
Mode of reproduction. Example
Gemmule formation in sponges is useful in ______