1. What is the importance of DNA copying in reproduction?
2. Why is variation beneficial to the species but not necessarily for the individual?
3. What is fission?
4. How does binary fission differ from multiple fission?
5. What is tissue culture? Where it is used for?
6. Define the process of fragmentation with example?
7. How will an organism be benefited if it reproduces through spores?
8. Can you think of reasons why more complex organisms cannot give rise to new individuals through regeneration?
9. Why is vegetative propagation practiced for growing same types of plants?
10. How is the process of pollination different from fertilization?
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OK , Here is the answer of all questions.
1-- The importance of DNA replication in asexual reproduction is that slight variation arise in the offspring in respect to the parents organism. this is because the replication of DNA in the cell is done by certain biochemical reaction which synthesise more of Gene material and no biochemical reaction can produce 100% same results so when the DNA already present in the nucleus of the parent cell is replicated by making more DNA at the time of Asexual Reproduction, then slight variation come into two copies formed.
and, The variation which introduced during reproduction helps the species of various organism to survive and flourish even in adverse environment.
4-- Binary fusion is a process of reproduction in which parent organism just splits in to two daughter cells.
In Binary fusion there is no such formation of protective wall like cyst.
Ex- Leishmania(responsible for Kala Azar).
Multiple fusion is a process of reproduction in which parent organism split to form number of daughter organism (it can reach upto 1000).
In Multiple Fission There is formation of protective wall called cyst.
Ex- plamodium(responsible for malaria disease).
3--In Biology, Fission is the process of reproduction in unicellular organism such as protozoa and many bacteria . Here a unicellular organism just splits to form two new organism.
5-- the production of new plants from a small piece of plant tissue or Cell removed from a growing tip of the plant in a suitable growth medium called culture solution is called tissue culture.
The tissue culture technique is being used increasingly for the production of ornamental plants like orchids, Dahli, carnation etc.
( tissue culture is also known as micropropagation).
6-- The breaking up of the body of a simple multicellular organisms into two or more pieces on maturing each of which subsequently grows to form a complete new organism is called fragmentation.
For Ex-- spirogyra (a green filamentous algae plant which is found in ponds, lakes and slow moving streams )simply breaks into two or more fragments on maturation and each fragment then grows into a newer Spirogyra.
((This is actually same as Fission, only difference is that here it is multicellular, While in fission it is unicellular)).
7-- In a spore formation the parent plant produces hundred of microscopic reproductive units called spores, which spreads into air and germinate under suitable condition when landed on food or soil
if this practice of reproduction is applied by organism , it can lead to Rapid growth of their species as 100 of daughter can produce at a single time.
8-- This is because Complex multicellular organism have higher degree of Organisation in their body. they cannot be reproduced from their cut body parts as a process of regeneration. for example dog is a Complex multicellular organisms if his tail is cut down, then the cell present in the cut tail cannot regenerate other dog's organ like heart, brain,lungs, stomach, intestine and limbs ,needed for the making of a complete dog.
9-- Following are the points :-)
:: The new planet produced by artificial vegetative propagation will be exactly like their parents plants .Any desirable features of the parent plant will be replicated in the new plants.
:: The plants grown by vegetative propagation usually need less attention in the early years, than a plant grown from seeds.
:: Many plants can be grown from just one parent plant buy artificial propagation.
10-- The transfer of pollen grains from the anther of a stamen to the stigma of a carpel is called pollination.
There is no such formation of a new cell.
fertilization occurs when the male gamete present in the pollen grains join with the female gamete present in ovule.
There is a formation of a new cell called zygot, which developed to become a seed.
:-) Hope u Get all ur answer (-:
Don't forget to thanks.
If you love my answer, mark as Brainlest.
1-- The importance of DNA replication in asexual reproduction is that slight variation arise in the offspring in respect to the parents organism. this is because the replication of DNA in the cell is done by certain biochemical reaction which synthesise more of Gene material and no biochemical reaction can produce 100% same results so when the DNA already present in the nucleus of the parent cell is replicated by making more DNA at the time of Asexual Reproduction, then slight variation come into two copies formed.
and, The variation which introduced during reproduction helps the species of various organism to survive and flourish even in adverse environment.
4-- Binary fusion is a process of reproduction in which parent organism just splits in to two daughter cells.
In Binary fusion there is no such formation of protective wall like cyst.
Ex- Leishmania(responsible for Kala Azar).
Multiple fusion is a process of reproduction in which parent organism split to form number of daughter organism (it can reach upto 1000).
In Multiple Fission There is formation of protective wall called cyst.
Ex- plamodium(responsible for malaria disease).
3--In Biology, Fission is the process of reproduction in unicellular organism such as protozoa and many bacteria . Here a unicellular organism just splits to form two new organism.
5-- the production of new plants from a small piece of plant tissue or Cell removed from a growing tip of the plant in a suitable growth medium called culture solution is called tissue culture.
The tissue culture technique is being used increasingly for the production of ornamental plants like orchids, Dahli, carnation etc.
( tissue culture is also known as micropropagation).
6-- The breaking up of the body of a simple multicellular organisms into two or more pieces on maturing each of which subsequently grows to form a complete new organism is called fragmentation.
For Ex-- spirogyra (a green filamentous algae plant which is found in ponds, lakes and slow moving streams )simply breaks into two or more fragments on maturation and each fragment then grows into a newer Spirogyra.
((This is actually same as Fission, only difference is that here it is multicellular, While in fission it is unicellular)).
7-- In a spore formation the parent plant produces hundred of microscopic reproductive units called spores, which spreads into air and germinate under suitable condition when landed on food or soil
if this practice of reproduction is applied by organism , it can lead to Rapid growth of their species as 100 of daughter can produce at a single time.
8-- This is because Complex multicellular organism have higher degree of Organisation in their body. they cannot be reproduced from their cut body parts as a process of regeneration. for example dog is a Complex multicellular organisms if his tail is cut down, then the cell present in the cut tail cannot regenerate other dog's organ like heart, brain,lungs, stomach, intestine and limbs ,needed for the making of a complete dog.
9-- Following are the points :-)
:: The new planet produced by artificial vegetative propagation will be exactly like their parents plants .Any desirable features of the parent plant will be replicated in the new plants.
:: The plants grown by vegetative propagation usually need less attention in the early years, than a plant grown from seeds.
:: Many plants can be grown from just one parent plant buy artificial propagation.
10-- The transfer of pollen grains from the anther of a stamen to the stigma of a carpel is called pollination.
There is no such formation of a new cell.
fertilization occurs when the male gamete present in the pollen grains join with the female gamete present in ovule.
There is a formation of a new cell called zygot, which developed to become a seed.
:-) Hope u Get all ur answer (-:
Don't forget to thanks.
If you love my answer, mark as Brainlest.
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