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Answers
(4)There are a number of types of asexual reproduction including fission, fragmentation, budding, vegetative reproduction, spore formation and agamogenesis. Spore formation occurs in plants, and some algae and fungi, and will be discussed in additional concepts. Binary Fission in various single-celled organisms (left).
(5 )Advantages of vegetative propagation:
1) The process makes possible the production of seedless varieties such as banana, orange, rose, jasmine etc.
2) As compared to the plant propagation by seeds, it a rapid, cheap and easier method of plant propagation. For example, certain plants such as lilies which usually take few years to flower can be made to do so within a year by this technique.
3) It helps in the preservation of useful parent characters in the next generation.
4) The method can be used for plants which can be easily grown in gardens due to their small size.
(6). (i) Due to overcrowding of large number of plants near the parent plants, there is severe competition between the members of the same species. Thus many plants become weak and stunted.
(ii) There may be degeneration of species due to lack of sexual stimulus.
(iii) Due to lack of genetic variability in vegetative reproductive structure there may not be evolution of new species.
Explanation:
4. the different types of a sexual reproduction are :-
- Fragmentation
- Spore Formation
- Vegetative Propagation