Why does binary fission happen in favourable conditions and multiple fission happens in unfavourable conditions in Amoeba?

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Important Questions on Reproduction in Organisms

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Biology>Reproduction>Reproduction in Organisms>Asexual Reproduction

Choose the correct statements related to binary fission of Paramecium?
(i) During favourable conditions Paramecium stops feeding after attaining its maximum growth.
(ii) At first the micronucleus divides by amitosis and the macronucleus divides into two daughter nuclei by mitosis.
(iii) The proter receives the anterior contractile vacuole, cytopharynx and cytostome from its parent individuals.
(iv) Before karyokinesis a transverse constriction appears in the middle of the body.

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Biology>Reproduction>Reproduction in Organisms>Asexual Reproduction

Which one of the statements regarding asexual reproduction is false?

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Biology>Reproduction>Reproduction in Organisms>Asexual Reproduction

Statement I: The binary fission of Euglena is called homothetogenic fission because the daughter euglenae are like mirror images.
Statement II: Binary fission in Paramecium is known as perkinetal fission because it occurs at right angles to the kineties.

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Biology>Reproduction>Reproduction in Organisms>Asexual Reproduction

Multiple fission in Amoeba is called:

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Biology>Reproduction>Reproduction in Organisms>Asexual Reproduction

Identify the asexual reproductive structure ${}^{'}M^{'}$ in the following diagram:

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Biology>Reproduction>Reproduction in Organisms>Asexual Reproduction

Zoospores are the reproductive units to carry asexual reproduction in

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Biology>Reproduction>Reproduction in Organisms>Asexual Reproduction

Zoospore is a:

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Biology>Reproduction>Reproduction in Organisms>Asexual Reproduction

Which of the following pairs is not correctly matched with respect to their mode of reproduction?

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Biology>Reproduction>Reproduction in Organisms>Asexual Reproduction

Which one of the following is NOT a vegetative propagule in angiosperms?

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Biology>Reproduction>Reproduction in Organisms>Asexual Reproduction

Which group of lichens do NOT produce spores?

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Biology>Reproduction>Reproduction in Organisms>Asexual Reproduction

In the given options, which one cannot propagate by vegetative means?

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Biology>Reproduction>Reproduction in Organisms>Asexual Reproduction

Match the following

	List-I		List-II
(A)	Longitudinal binary fission	(I)	Paramoecium
(B)	Transverse binary fission	(II)	Amoeba
(C)	Sporogony	(III)	Pleurobrachia
(D)	Sporulation	(IV)	Plasmodium
		(V)	Euglena