Asexual Reproduction
Asexual Reproduction
Asexual Reproduction: The type of reproduction that takes place without the process of gamete (sex cell) formation is called asexual reproduction. As only somatic cells are involved it is also called as somatogenic reproduction. This process is very common in unicellular organisms and is said to be the simplest type of reproduction e.g. binary fission in amoeba, budding in hydra, spore formation in Rhizopus and fungus, vegetative propagation in flowering plants like rose etc. This type of reproduction takes place commonly in lower plants and animals, where the body is not very complex. There are different forms of asexual reproduction :
1. Fission : In this type of reproduction whole body acts as a reproductive unit. The nucleus of the unicellular parent organism divides into two followed by division of cytoplasm, resulting in two daughter cells of almost equal size. It is commonly seen in Euglena, Ameoba. Depending on the number of division, fission can be binary fission, longitudinal fission and multiple fission.
2. Fragmentation :These organisms are formed of cells and tissues but lack differentiated specialised tissue and organs. Such organisms are produce by breaking of theri bodies into small pieces called fragments. Each fragment is capable of developing inot a complete organism. Example :flatworm, echinoderm,sea anemones, filamentous green algae .
3. Budding : It involves production of a new individual form an outgrowth or small projecrtion, from the parent, called a bud. It is commonly seen in yeast, some protozoans and ceratin lower organisms like Hydra and sponges.
4. Regeneration : This is the abiltiy of an organsim to regenerate its lost part of the body which has been removed as an injury or by autonomy. Eg : Planaria
5. Spore formation : it is a common method of asexual reproduction in fungi and bacteria. The spores are produced in specialised strructures called as sporangium in case of fungi. Non - motile and non - motile spores are called aplanospores while the motile and flagellated spores are called as zoospores. The spore are libertaed after rupturing of sporangial wall.
6. Vegetative reproduction : It is the method in which parts other than seeds are used as propagules . They are classififed as natural and artificial method.
There are several methods of natural vegetative propagation . They are By root tubes, By underground modified stems, By runners, node of potato, Rhizome of ginger, corn of banana and bulb of garlic and onion, by leaf etc.
Artificial Method :
These are man made and develpoed by plant growers and horticulturist for commercial prooagation of crops. Some common methods are Cutttiing, Layering, Grafting, Plant tissue culture etc.
__________ is not an example or feature of asexual reproduction? | |||
| Right Option : B | |||
| View Explanation | |||
A feature of reproduction that is common to amoeba, spirogyra and yeast is that _________________ | |||
| Right Option : A | |||
| View Explanation | |||
Roots of which of the following plants are invovlved in asexual reproduction? | |||
| Right Option : C | |||
| View Explanation | |||
Students / Parents Reviews [20]
We started with lot of hope that Abhyas will help in better understnding of complex topics of highers classes. we are not disappointed with the progress our child has made after attending Abhyas. Though need to mention that we expected a lot more. On a scale of 1-10, we would give may be 7.
Manya
8thAbhyas Methodology is very good. It is based on according to student and each child manages accordingly to its properly. Methodology has improved the abilities of students to shine them in future.
Manish Kumar
10thMy experience with Abhyas academy is very nice or it can be said wonderful. I have been studying here from seven class. I have been completing my journey of three years. I am tinking that I should join Abhyas Academy in tenth class as I am seeing much improvement in Maths and English
Hridey Preet
9thUsually we see institutes offering objective based learning which usually causes a lag behind in subjective examinations which is the pattern followed by schools. I think it is really a work of planning to make us students grab the advantages of modes of examination, Objective Subjective and Onli...
Anika Saxena
8thAbhyas institute is one of the best coaching institute in the vicinity of Ambala Cantt area. The teachers of the institute are well experienced and very helpful in solving the problems of the students.The good thing of the institute is that it is providing extra classes for the students who are w...
Aman Kumar Shrivastava
10thMy experience with Abhyas is very good. I have learnt many things here like vedic maths and reasoning also. Teachers here first take our doubts and then there are assignments to verify our weak points.
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Aman Kumar Shrivastava
10thIn terms of methodology I want to say that institute provides expert guidence and results oriented monitering supplements by requsite study material along with regular tests which help the students to improve their education skills.The techniques of providing education helps the students to asses...
Aman Kumar Shrivastava
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Prisha Gupta
8thA marvelous experience with Abhyas. I am glad to share that my ward has achieved more than enough at the Ambala ABHYAS centre. Years have passed on and more and more he has gained. May the centre flourish and develop day by day by the grace of God.
Archit Segal
7thIt was a good experience with Abhyas Academy. I even faced problems in starting but slowly and steadily overcomed. Especially reasoning classes helped me a lot.
Cheshta
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Hiya Gupta
8thAbhyas institute is one of the best coaching institute in the vicinity of Ambala cantt.The institute provides good and quality education to the students.The teachers are well experienced and are very helpful in solving the problems. The major advantages of the institute is extra classes for weak...
Shreya Shrivastava
8thAbhyas is a complete education Institute. Here extreme care is taken by teacher with the help of regular exam. Extra classes also conducted by the institute, if the student is weak.
Om Umang
10thAbhyas academy is great place to learn. I have learnt a lot here they have finished my fear of not answering.It has created a habit of self studying in me.The teachers here are very supportive and helpful. Earlier my maths and science was good but now it has been much better than before.
Barkha Arora
10thMy experience with Abhyas Academy has been very good. When I was not in Abhyas whenever teacher ask questions I could not speak it confidently but when I came in Abhyas, my speaking skills developed and now I am the first one to give the answer of teachers question.
Upmanyu Sharma
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Eshan Arora
8thThird consective year,my ward is in Abhyas with nice experience of admin and transport support.Educational standard of the institute recumbent at satisfactory level. One thing would live to bring in notice that last year study books was distributed after half of the session was over,though study ...
Ayan Ghosh
8thI have spent a wonderful time in Abhyas academy. It has made my reasoning more apt, English more stronger and Maths an interesting subject for me. It has given me a habbit of self studying
