Advertisements
Advertisements
प्रश्न
Which of the following is not a type of asexual reproduction in multicellular organisms?
विकल्प
Fragmentation
Regeneration
Budding
Binary fission
उत्तर
Binary fission
APPEARS IN
संबंधित प्रश्न
Explain the term “Regeneration” as used in relation to reproduction of organisms
How the process of regeneration in Planaria process different from reproduction?
State two disadvantages of vegetative propagation?
Name two plants which can be grown from their broken stems.
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.
What is meant by the term 'fission' as used in biology?
Can you consider cell division as a type of reproduction in unicellular organisms? Give reason.
Why do green grass plants spring up in dry fields on their own after the rains?
Name two marine organisms which also reproduce by the same method as yeast but form colonies.
One of the following organisms does not reproduce by budding. This is :
(a) Sponge
(b) Yeast
(c) Hydra
(d) Planaria
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
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?
With the help of suitable diagram, describe Binary fission in plants.
Multiple choice question. Tick (✓) the correct choice:
The common method of reproduction in bacteria is
- budding
- fragmentation
- binary fission
- all the above
Define the following:
Grafting
Mention the common method of reproduction in Strawberry.
Describe the advantages of vegetative reproduction.
Describe the various methods of vegetative reproduction.
What happens when a mature spirogyra filament attains considerable length?
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.
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.
Fill in the blanks and rewrite the completed statements:
___________ acid inhibits growth leading to wilting of leaves.
Which of the following is a mode of asexual reproduction?
Choose the correct alternative and rewrite the following:
Ramesh observed a slide of Amoeba with elongated nuclei. It would represent _______________.
Rewrite the following statement by selecting the correct option.
When Hydra becomes matured, _________ takes place in it.
Write various advantages of vegetative propagation.
How is vegetative propagation economically important?
Why anther is called as tetrasporangiate structure?
Name the hormone produced by unfertilised ovary responsible for enlargement of ovary into fruit.
Write a note on different types of endosperms in angiosperms.
Explain the importance of the reproduction process.
- Which type of reproduction is indicated in the following diagram?
- Redraw the given type of reproduction in the correct sequence and explain it.
Hydra usually reproduces by ______
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.
______ do not produce spores.
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
What do the following parts of a flower develop into after fertilisation?
| a. | Ovary | ______ |
| b. | Ovules | ______ |
