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प्रश्न
Write the correct option from the given multiple options.
Vegetative propagation is performed with the help of ..........................in sweet potato.
a) root
b) stem
c) leaf
d) flower.
उत्तर
a) Root
APPEARS IN
संबंधित प्रश्न
Yeast reproduces by _________.
(a) spore formation
(b) multiple fission
(c) fragmentation
(d) budding
…………. is a mode of asexual reproduction.
(a) Cloning
(b) Budding
(c) Pollination
(d) Germination
Explain the term “Regeneration” as used in relation to reproduction of organisms
What is multiple fission?
Name one organism which exhibits multiple fission type of reproduction.
Describe reproduction by spores in Rhizopus
Name two plants which can be grown from their broken stems.
How does an Amoeba reproduce? Describe the process of reproduction in Amoeba with the help of labelled diagrams of different stages in its reproduction process.
Name one organism which reproduces by fission and another which reproduces by fragmentation.
Name two marine organisms which also reproduce by the same method as yeast but form colonies.
What is meant by 'grafting' as a means of propagation in plants?
A simple multicellular animal having tentacles which lives in freshwater usually reproduces by the asexual process of :
(a) binary fission
(b) spore formation
(c) budding
(d) fragmentation
Asexual reproduction through budding takes place in :
(i) Amoeba and Yeast
(ii) Yeast and Hydra
(iii) Hydra and Plasmodium
(iv) Corals and Sponges
(a) (i) and (ii)
(b) only (ii)
(c) (i) and (iii)
(d) (ii) and (iv)
The two types of organisms which produce colonies by the process of budding are :
(a)Hydra and Corals
(b) Yeast and Sponges
(c) Corals and Sponges
(d) Hydra and Yeast
Multiple fission occurs in one of the following. This is :
(a) bread mould
(b) kala-azar parasite
(c) flatworm
(d) malaria parasite
The stem of a fruit tree X fixed in soil is cut in a slanting way. The upper part of stem of another fruit tree Y of different variety of same species is also cut in a slanting way. The cut stem of tree Y, without roots but having some leaves, is placed over the rooted cut stem of tree X in such a way that their cut surfaces fit together properly. While joining the two cut stems, care is taken to make sure that the layer Z of one cut stem is in contact with layer Z of the other cut stem. The joint of cut stem is bound tightly with a piece of cloth and covered properly with polythene. Soon the cut heals and the two stems grow together and become one fruit tree producing leaves, flowers and fruits.
(a) What is the name of this method of producing plants or trees?
(b) What name is given to the cut stem of tree X having roots?
(c) What name is given to the cut stem of tree Y which has no roots but has some leaves?
(d) Name the layer Z.
(e) Why should the layer Z of one cut stem be in contact with the layer Z of the other cut stem?
(f) Name any four fruit trees which are usually bred by this technique.
(g) State any one advantage of producing fruit trees by this technique.
Multiple choice question. Tick (✓) the correct choice:
Budding is commonly seen in
- yeast
- grasses
- Amoeba
- Spirogyra
Define the following:
Budding
Mention the common method of reproduction in Bacteria.
Mention the common method of reproduction in Yeast.
Mention the common method of reproduction in Mosses.
Mention the common method of reproduction in Dahlia.
Mention the common method of reproduction in Jasmine.
Mention the common method of reproduction in Mango.
After viewing different slides, a student draws following diagrams. Select the one which depicts binary fission in Amoeba:
(A) a
(B) b
(C) c
(D) d
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. | ____________ |
Gemmule formation takes place in ________.
What is meant by vegetative propagation? Name the vegetative parts through which Potato and Bryophyllum reproduce.
Write various advantages of vegetative propagation.
Grafting is not possible in the monocots because they
Describe the process of fertilization in angiosperms with the help of a diagram.
Define.
Fragmentation
In Rhizopus, tubular thread-like structures bearing sporangia at their tips are called ______
Offspring formed by asexual method of reproduction have greater similarity among themselves because
- asexual reproduction involves only one parent
- asexual reproduction does not involve gametes
- asexual reproduction occurs before sexual reproduction
- asexual reproduction occurs after sexual reproduction
Length of pollen tube depends on the distance between
Which of the following statements is/are true for sexual reproduction in plants?
(i) Plants are obtained from seeds.
(ii) Two plants are always essential.
(iii) Fertilisation can occur only after pollination.
(iv) Only insects are agents of pollination.
Choose from the options given below.
When one of the following is correctly matched?
