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प्रश्न
The unicellular organisms which reproduce by binary fission are considered immortal. Justify.
उत्तर
In unicellular organisms during binary fission, the entire cell (organism) divides completely to form two daughter cells which later on develop into adult and the process goes on repeatedly during each division leading to immortality of cell (organism). Hence unicellular organisms like amoeba are ‘biologically immortal’.
संबंधित प्रश्न
Write the name of the organism that is referred to as the 'Terror of Bengal'.
Why do algae and fungi shift to sexual mode of reproduction just before the onset of adverse conditions?
Why is the offspring formed by asexual reproduction referred to as clones?
Why is vegetative reproduction also considered as a type of asexual reproduction?
Give two suitable examples of vegetative propagation
State two advantages of vegetative propagation.
Answer the following question.
A pollen grain in angiosperm at the time of dehiscence from an anther could be 2-celled or 3-celled.Explain.How are the cells placed within the pollen grain when shed at a 2-celled stage?
Identify the correctly matched pair
Consider the following statement(s)
- In Protandrous flowers, pistil matures earlier
- In Protogynous flowers, pistil matures earlier
- Herkogamy is noticed in unisexual flowers
- Distyle is present in Primula
What is reproduction?
What are clones?
What is the difference between syngamy and fertilization?
In which type of parthenogenesis are only males produced?
In all the methods of asexual reproduction ______.
A clone is a group of individuals obtained through ______.
Fleshy buds produced in the axil of leaves, which grow to form new plants when shed and fall on the ground are called ______.
Bryophyllum daigremontianum reproduces by ______.
Vegetative propagation in Pistia occurs by ______.
Sugarcane is propagated by ______.
Offspring formed by sexual reproduction exhibit more variation than those formed by Asexual reproduction because ______.
The term ‘clone’ cannot be applied to offspring formed by sexual reproduction because ______.
A population of genetically identical individuals, obtained from asexual reproduction is ______.
The structure of bilobed anther consists of ______
Which root zone is responsible for maximum water absorption?
Asexual reproduction involves ______
Chlamydomonas reproduce by ______.
Although sexual reproduction is a long drawn, energy-intensive complex form of reproduction, many groups of organisms in Kingdom Animalia and Plantae prefer this mode of reproduction. Give atleast three reasons for this.
