Q5 (a) Asexuai lcproduction involves the participation of single
individual parent and occurs
method is a common means of rapidly
increasing off springs under favourable conditions and occurs as a
result of repeated mitotic divisions in certain cells. Asexual
reproduction may occur by fission, fragmentation, regeneration,
budding, spore formation, vegetative propagation in plants and by
tissue culture.
Read the above paragraph and answer the following questions: -
Name at least two protozoans which reproduce asexually by
binary fission. (1)
(ii) How does hydra reproduces by regeneration? (2)
(iii) What is callus ?
(1)
(iv) Differentiate between binary fission & multiple fission. (2 pts).
TYS
Answers
Answer:
12th
Biology
Reproduction in Organisms
Lifespan, Reproduction and Variation
Asexual reproduction is the...
BIOLOGY
Asexual reproduction is the _____ method of reproduction in organisms that have a relatively simple organisation like _______ and _______.
Fill in the blank in the above statement.
MEDIUM
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ANSWER
Asexual reproduction is a common method of reproduction by which offspring arise from a single parent and inherit the genes of that parent only. An important form of fission (a type of asexual reproduction) is binary fission, where the parent organism is replaced by two daughter organisms. Only prokaryotes (the archaea and the bacteria) reproduce asexually through binary fission. Eukaryotes (unicellular fungi) may reproduce in a functionally similar manner by mitosis. Multiple fission at the cellular level occurs in many protists, e.g. algae. The nucleus of the parent cell divides several times by mitosis, producing several nuclei. The cytoplasm then separates, creating multiple daughter cells.
Thus, the correct option is 'Common, algae, fungi.'