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प्रश्न
Rewrite the following statement by selecting the correct option.
When Hydra becomes matured, _________ takes place in it.
पर्याय
Budding
Regeneration
Fragmentation
Binary Fission
उत्तर
When Hydra becomes matured, Budding takes place in it.
APPEARS IN
संबंधित प्रश्न
Differentiate between 'stem tuber' and 'tuberous root'.
Explain the process of regeneration in Planaria.
Can you think of reasons why more complex organisms cannot give rise to new individuals through regeneration?
Name the method by which Spirogyra reproduces under favourable conditions. Is this method sexual or asexual?
What is the name of asexual reproduction method in Spirogyra
Explain why, more complex multicellular organisms cannot give rise to new organisms through regeneration.
Can you consider cell division as a type of reproduction in unicellular organisms? Give reason.
Vegetative propagation involves the growth and development of 'something' present in the old part of the plant to form a new plant. What is this 'something'?
Explain how new Bryophyllum plants can be produced from the leaves of the old plant. Illustrate your answer with the help of a labelled diagram.
Describe the process of reproduction in Hydra with the help of labelled diagrams. What is the name of this process of reproduction?
State two advantages of grafting method of artificial propagation of plants.
An organism which may be considered to be a kind of plant and reproduces by budding is :
(a) Paramecium
(b) Bread mould
(c) Hydra
(d) Yeast
An alga which reproduces by the asexual reproduction method called fragmentation is :
(a) Rhizopus
(b) Salmonella
(c) Plasmodium
(d) Spirogyra
An organism which can reproduce by two asexual reproduction methods one similar to the reproduction in yeast and the other similar to the reproduction in Planaria is :
(a) Spirogyra
(b) Bryophyllum
(c) Hydra
(d) Sea anemone
There are four tiny organisms A, B, C and D. The organism A is a parasitic protozoan which causes a disease known as kala-azar. The organism B is a microscopic single-celled animal which causes malaria disease in human beings. The organism C is a unicellular animal which can change its body shape according to need, it has no fixed shape. The organism D is also a unicellular animal which is slipper-shaped having a large number of tiny hair all around its body.
(a) Name the organisms A, B, C and D
(b) Name one characteristic body feature of organism A.
(c) Name the insect which carries organism B and transmits it from one person to another.
(d) What name is given to the asexual method of reproduction of (i) organism A, and (ii) organism B?
(e) Where do organisms C and D live?
When a moist slice of bread was kept aside for a few days then some organism grew on it to form a white cottony mass which later turned black. When this slice of bread was observed through a magnifying glass, then fine thread-like projections and thin stems having bulb-like structures at the top were seen.
(a) What is the common name and scientific name of the organism which grew on the moist slice of bread?
(b) How did this organism grow on the moist slice of bread automatically?
(c) What are the fine, thread-like projections on the surface of slice of bread known as?
(d) What name is given to the knob-like structures and what do they contain?
(e) What is the name of this method of reproduction?
(f) Name one unicellular organism which reproduces by this method.
(g) Name tow non-flowering plants which reproduce by this method.
Write a short note on Bryophyllum.
Fill in the blank:
Budding is a kind of _________ reproduction.
Fill in the blank:
The amount of cytoplasm in the parent cell is _____ than the amount in the bud.
Mention the common method of reproduction in Bacteria.
A student after observing a slide showing different stages of binary fission in Amoeba draws the following diagrams. However these diagrams are not in proper sequence:
The correct sequence is:
(A) I, V, IV, III, II
(B) I, III, IV, V, II
(C) I, V, III, IV, II
(D) I, IV, V, III, II
Name the following :
Explain the structure and the function of the structures released from the ‘blobs’ in Rhizopus.
The following figure illustrates binary fission in Amoeba in an incorrect sequence.
The correct sequence is
(A) III, II, IV, I
(B) III, IV, II, I
(C) II, III, IV, I
(D) IV, III, II, I
Following diagrams were drawn by different student on having seen prepared slides of budding in yeast.
Correct diagrams are
(A) I, II, III
(B) II, III, IV
(C) III, IV, V
(D) I, IV, V
Binary fission is observed in which one of the following figures?
Gemmule formation takes place in ________.
Define vegetative propagation. List its two methods.
Write four lines on the following: Layering
Give the name of the plant that reproduces vegetatively by: Underground stem
This method of asexual reproduction is seen in paramoecium.
Name the three types of asexual reproduction in unicellular organisms.
Explain the importance of the reproduction process.
The ability of a cell to divide into several cells during reproduction in Plasmodium is called ______
Spirogyra reproduce by ______
Many unicellular organisms reproduce by the process of ______
Vegetative propagation refers to formation of new plants from
Rajesh observed a patch of greenish black powdery mass on a stale piece of bread.
Name the organism responsible for this and its specific mode of asexual reproduction.
What do the following parts of a flower develop into after fertilisation?
| a. | Ovary | ______ |
| b. | Ovules | ______ |
Explain with the help of a labelled diagram, the process of reproduction in Hydra by budding. Name the cells used for reproduction in this process.
