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प्रश्न
Complete the following chart:
| Asexual reproduction | Sexual reproduction | ||
| 1. | Reproduction that occurs with the help of somatic cells is called as asexual reproduction. | 1. | ____________ |
| 2. | ____________ | 2. | Male and female parent are necessary for sexual reproduction. |
| 3. | This reproduction occurs with the help of mitosis only. | 3. | ____________ |
| 4 | ____________ | 4. | New individual formed by this method is genetically different from parents. |
| 5 | Asexual reproduction occurs in different individuals by various methods like binary fission, multiple fission, budding, fragmentation, regeneration, vegetative propagation, spore production, etc. | 5. | ____________ |
उत्तर
| Asexual reproduction | Sexual reproduction | ||
| 1 | Reproduction that occurs with the help of somatic cells is called as asexual reproduction. | 1 | Reproduction that occurs with the help of germ cells is called sexual reproduction. |
| 2 | Both the parents are not required for asexual reproduction. It is uniparental reproduction. |
2 | Male and female parent are necessary for sexual reproduction. |
| 3 | This reproduction occurs with the help of mitosis only. | 3 | This reproduction occurs with the help of both meiosis and mitosis. |
| 4 | New individual formed by this method is genetically identical to parents. | 4 | New individual formed by this method is genetically different from parents. |
| 5 | Asexual reproduction occurs in different individuals by various methods like binary fission, multiple fission, budding, fragmentation, regeneration, vegetative propagation, spore production, etc. | 5 | Sexual reproduction occurs in various organisms like microbes, plants, animals and humans. It involves two main processes- gamete formation and fertilization. |
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संबंधित प्रश्न
Students were asked to observe the permanent slides showing different stages of budding in yeast under high power of a microscope.
(A) Which adjustment screw (coarse/fine) were you asked to move to focus the slides?
(B) Draw three diagrams in correct sequence showing budding in yeast.
Explain the process of regeneration in Planaria.
Identify the figures showing the process of budding in yeast.
(A) I, II and III
(B) II, III and IV
(C) I, II and IV
(D) III, IV and I
What happens when Bryophyllum leaf falls on the wet soil?
What is meant by the term 'artificial propagation of plants'?
What is name of the organ of propagation present in a tuber?
Name two organisms which reproduce by the same asexual process as that of Amoeba.
What is the difference between the two asexual methods of reproduction : fission and fragmentation?
Binary fission describes the type of reproduction where the organism divides to form :
(a) many spores
(b) two daughters
(c) many buds
(d) two hyphae
A small part of the shoot of a plant is removed with a sharp knife. When the lower end of this small part of the shoot is buried in moist soil, it gradually develops roots and shoots and grows to become a new plant.
(a) What is the name of this method of propagating plants?
(b) What care should be taken while removing a small part of the shoot from the parent plant with a knife?
(c) Name any two plants which provide us with food directly or indirectly and are grown by this method.
(d) Give one advantage of this method of producing new plants.
(e) State whether it is a sexual method of reproduction or an asexual method. Why?
(f) What special name can be given to the genetically identical new plants produced by this technique?
Fill in the following blank with suitable word :
Fusion of gametes gives rise to a single cell called ............
Fill in the following blank with suitable word :
The process of fusion of gametes is called .............
What is vegetative reproduction?
Briefly explain why a gardener prefers to grow certain plants vegetatively?
Multiple choice question. Tick (✓) the correct choice:
The common method of reproduction in bacteria is
- budding
- fragmentation
- binary fission
- all the above
Differentiate between the following:
Binary fission and budding
Differentiate between the following:
Cutting and grafting
Define the following:
Binary fission
Mention the common method of reproduction in Jasmine.
Mention the common method of reproduction in Bougainvillea.
Pranav and Preeti are twins in your class. They belong to ___________ twins type.
Name four plants which can be propagated by stem-cutting.
Name the parts of the plants used to grow following flower: Lily
How is vegetative propagation economically important?
How is plant hybridisation as a technique beneficial?
Identify the type of reproduction from the following explanation and draw a neat and labelled diagram.
- The body of the parent organism breaks up into many fragments and each fragment starts to live as an independent new organism.
- Give two examples of living organisms which follow this type of reproduction method.
Explain the importance of the reproduction process.
Observe the given picture and answer the questions given below.
- State the type of reproduction.
- Identify the part of reproduction.
Sweet potato - _____________
Bryophyllum - _____________
Potato - _____________
Draw a neat and labelled diagram.
Spore formation
Asexual reproduction in yeast is ______.
Budding, in hydra, is a form of ______.
The ability of a cell to divide into several cells during reproduction in Plasmodium is called ______
Offspring formed by the asexual method of reproduction have greater similarities among themselves because ______
(i) asexual reproduction involves only one parent
(ii) asexual reproduction does not involve gametes
(iii) asexual reproduction occurs before sexual reproduction
(iv) asexual reproduction occurs after sexual reproduction
In the following Question, the Assertion and Reason have been put forward. Read the statements carefully and choose the correct alternative from the following:
Assertion: Amoeba reproduced by fission.
Reason: All unicellular organisms are reproduced by the asexual method.
Length of pollen tube depends on the distance between
In the diagram of a bisexual flower given in Figure 12.5, draw the missing part and label the parts marked (a), (b) and (c). Also, label the missing part that you draw
Seed formation without fertilization in flowering plants involves the process of ______.
Suppose there is one member of a particular kind of organism in a culture dish, which doubles itself in one hour through asexual reproduction. Work out the number of members of that kind of organism which will be present in the culture dish after ten hours. Such a colony of individuals arising from one parent is called a “clone”.
