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प्रश्न
Rewrite the following statement by selecting the correct option.
When Hydra becomes matured, _________ takes place in it.
विकल्प
Budding
Regeneration
Fragmentation
Binary Fission
उत्तर
When Hydra becomes matured, Budding takes place in it.
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संबंधित प्रश्न
Yeast reproduces by _________.
(a) spore formation
(b) multiple fission
(c) fragmentation
(d) budding
Explain the term “Regeneration” as used in relation to reproduction of organisms
How the process of regeneration in Planaria process different from reproduction?
List two advantages of vegetative propagation.
On cutting the body of an organism into many pieces it was observed that many of these pieces developed as new individuals. Name the process and list two organisms in which this process may be observed. Draw a schematic diagram to illustrate the changes that are likely to be observed during the development of new individuals in any one of the organisms named.
Can you think of reasons why more complex organisms cannot give rise to new individuals through regeneration?
State two disadvantages of vegetative propagation?
Name any two plants which are propagated by cuttings method.
Fill in the following blank with suitable word :
Rose plants and sugar cane crop are usually grown by the ........... method.
Name three common methods which are used for the artificial propagation of plants.
What is meant by 'grafting' as a means of propagation in plants?
Describe the grafting method for the artificial propagation of plants with the help of labelled diagrams.
What is a 'cutting' in respect of plants for propagation purposes?
The ability of a cell to divide into several cells during reproduction in Plasmodium is called :
(a) budding
(b) fragmentation
(c) binary fission
(d) multiple fission
The thread like structures that develop on a moist slice of bread in Rhizopus are ______.
Multiple fission occurs in one of the following. This is :
(a) bread mould
(b) kala-azar parasite
(c) flatworm
(d) malaria parasite
APlanaria worm is cut horizontally in the middle into two halves P and Q such that the part P contains the whole head of the worm. Another Planaria worm is cut vertically into two halves R and s in such a way that both the cut pieces R and S contain half head each. Which of the cut pieces of the twoPlanaria worms could regenerate to form the complete respective worms?
(a) only P
(b) only R and S
(c) P, R and S
(d) P, Q, R and S
When the branches of a plant growing in the field are pulled towards the ground and a part of them is covered with moist soil (leaving the tips of the branches exposed above the ground), then after some time new roots develop from the parts of branches buried in the soil. On cutting these branches from the parent plant, new plants are produced from the cut parts of branches which had developed roots.
(a) What is this method of propagation of plants known as?
(b) What type of branches should a plant have to be able to be propagated by this method?
(c) Name any two plants which are grown for their flowers and propagated by this method.
(d) Name any two plants which are grown for their fruits and propagated by this method
(e) Name one plant which gets propagated by this method naturally by forming runners (soft horizontal stems running above the ground).
Fill in the blank:
The amount of cytoplasm in the parent cell is _____ than the amount in the bud.
Fill in the blank:
Yeast cells reproduce by ________.
Fill in the blank:
Fungi, ferns and mosses reproduce by ____________________.
Define the following:
Vegetative reproduction
Define the following:
Tissue culture
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
A yeast cell in which budding occurs was seen to have:
(1) one bud cell
(2) two bud cell
(3) three bud cell
(4) a chain of bud cells
Choose the correct alternative and rewrite the following:
Ramesh observed a slide of Amoeba with elongated nuclei. It would represent _______________.
Name two flowering plants that reproduce both by seeds and by vegetative means.
Name the parts of the plants used to grow following flower: China rose
Give the name of the plant that reproduces vegetatively by: Leaves
What do you understand by hybridisation?
Grafting is not possible in the monocots because they
Asexual reproduction is also known as ______.
A feature of reproduction that is common to Amoeba, Yeast, and Spirogyra is that ______
In Rhizopus, tubular thread-like structures bearing sporangia at their tips are called ______
______ do not produce spores.
Mustard was growing in two fields- A and B. While Field A produced brown coloured seeds, field B produced yellow coloured seeds.
It was observed that in field A, the offsprings showed only the parental trait for consecutive generations, whereas in field B, majority of the offsprings showed a variation in the progeny.
What are the probable reasons for these?
Match the columns:
| Column A (Asexual) | Column B (Examples) | ||
| (a) | Spore formation | (1) | Spirogyra |
| (b) | Conidia formation | (2) | Yeast |
| (c) | Fragmentation | (3) | Chlamydomonas |
| (d) | Budding | (4) | Penicillium |
