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प्रश्न
Choose the correct alternative and rewrite the following:
Ramesh observed a slide of Amoeba with elongated nuclei. It would represent _______________.
पर्याय
Binary fission
Budding
Multiple fission
None of the above.
उत्तर
Binary fission
APPEARS IN
संबंधित प्रश्न
For binary fission, Amoeba required .................... parent cells.
(a) Three
(b) Two
(c) One
(d) Zero
Name the part of Bryophyllum where the buds are produced for vegetative propagation.
Name the type of asexual reproduction in which two individuals are formed from a single parent and the parental identity is lost. Draw the initial and the final stages of this type of reproduction. State the event with which this reproduction starts.
List any two modes of asexual reproduction in animals.Under which mode of reproduction is vegetative propagation placed and why?
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
External fertilisation takes place in frogs.
A student in viewing under a microscope a permanent slide showing various stages of asexual reproduction by budding in yeast. Draw diagrams of what he observes (in proper sequence)
What is the name of asexual reproduction method in Leishmania?
Name two plants which are usually propagated by artificial propagation methods. Name the method of artificial propagation used in each case.
Describe the layering method for the artificial propagation of plants. Illustrate your answer with the help of a labelled diagram. Name any five plants which are propagated by the layering method.
Name one unicellular organism which reproduces by the same asexual process as Hydra.
Describe the grafting method for the artificial propagation of plants with the help of labelled diagrams.
Describe the cuttings method for the artificial propagation of plants. Illustrate your answer with the help of labelled diagrams.
The disease kala-azar is caused by a micro-organism known as :
(a) Planaria
(b) Leech
(c) Leishmania
(d) Plasmodium
A multicellular organism which reproduces by budding is :
(a) Amoeba
(b) Yeast
(c) Leishmania
(d) Hydra
The organisms which can reproduce by fragmentation are :
(a) Corals and Sponges
(b) Corals and Spirogyra
(c) sea anemone and Spirogyra
(d) Sponges and Sea anemones
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?
Put a tick mark (✓) against the correct alternative in the following statement
Grafting is a method of:
Write a short note on Vegetative reproduction.
Write a short note on Grafting.
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 Jasmine.
Explain the process of binary fission in bacteria.
What happens when on maturation sporangia burst?
What is vegetative propagation? List with brief explanation three advantages of practising this process for growing some types of plants. Select two plants from the following which are grown by this process:
Banana, Wheat, Mustard, Jasmine, Gram.
What is meant by asexual reproduction?
From the following diagrams, select the correct ones showing stages of binary fission in Amoeba:
(A) I, II, III
(B) IV, II, III
(C) V, II, III
(D) IV, I, III
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. | ____________ |
Name the parts of the plants used to grow following flower: China rose
This method of asexual reproduction is seen in paramoecium.
Asexual reproduction takes place through budding in ______.
Identify the reason because of which cambium is essential for grafting in plants.
During favourable conditions, Amoeba reproduces by ______
The ability of an organism to develop a whole body from a broken piece or fragment is called ______
In Spirogyra, asexual reproduction takes place by ______
In Figure, the parts A, B and C are sequentially
Rajesh observed a patch of greenish black powdery mass on a stale piece of bread.
Name its vegetative and reproductive parts.
Vegetative reproduction of Agave occurs through ______.
What is Regeneration?
