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प्रश्न
Explain the process of regeneration in Planaria.
Draw diagrams to explain the regeneration that takes place in each of the body parts of planaria when its body is out into pieces. Name any other organism in which a similar process can be observed.
उत्तर
Planaria is a type of flatworm. It has the amazing capacity to regenerate its lost body part. When the flatworm is cut horizontally, separating the head from the tail, the tail will regenerate the lost head and the head will regenerate the lost tail. This process is known as regeneration. The diagram illustrating the process of regeneration in Planaria is given below.
Regeneration is one of the methods of asexual reproduction, which can be observed in Hydra also.
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संबंधित प्रश्न
A student has to focus his compound microscope to observe a prepared slide showing different stages of binary fission in Amoeba. The steps he is likely to follow are listed below in a haphazard manner:
I. Adjust the diaphragm and the mirror of the microscope so that sufficient light may enter to illuminate the slide.
II. Fix the slide on the stage carefully.
III. Adjust the microscope to high power and focus.
IV. Adjust the microscope to low power and focus.
The correct sequence of the above steps to observe the slide under the microscope is
(A) I, II, IV, III
(B) II, I, IV, III
(C) II, IV, I, III
(D) I, IV, II, III
External fertilisation takes place in frogs.
Fill in the following blank with suitable word :
Strawberry plants are propagated by the natural............... method.
Name a tiny fresh-water animal which reproduces by the same method as that of yeast? What is this method known as?
An animal which reproduces by the process of budding is :
(a) Plasmodium
(b) yeast
(c) Hydra
(d) Planaria
Define the following:
Grafting
Mention the common method of reproduction in Mosses.
Explain the process of budding in Hydra.
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Name the parts of the plants used to grow following flower: China rose
