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Q. No.Identify the correct statements:
| I: | Life spans of organisms are not necessarily correlated with their sizes. |
| II: | There is no natural death in single-celled organisms. |
| III. | Reproduction enables the continuity of the species, generation after generation |
| 1. | Only I and II | 2. | Only I and III |
| 3. | Only II and III | 4. | I, II and III |
Subtopic: Introduction |
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Consider the given two statements:
| Statement I: | When offspring is produced by a single parent but always with the involvement of gamete formation, reproduction is asexual. |
| Statement II: | When two parents [opposite sex] participate in the reproductive process and also involve the fusion of male and female gametes, it is called sexual reproduction. |
| 1. | Statement I is correct, Statement II is incorrect. |
| 2. | Statement I is correct, Statement II is correct. |
| 3. | Statement I is incorrect, Statement II is correct. |
| 4. | Statement I is incorrect, Statement II is incorrect. |
Subtopic: Introduction |
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There are various types of reproduction. The type of reproduction adopted by an organism depends on:
| 1. | The habitat and morphology of the organism |
| 2. | Morphology of the organism |
| 3. | Morphology and physiology of the organism |
| 4. | The organism’s habitat, physiology, and genetic makeup |
Subtopic: Introduction |
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The term ‘clone’ cannot be applied to offspring formed by sexual reproduction because:
| 1. | Offspring do not possess exact copies of parental DNA |
| 2. | DNA of only one parent is copied and passed on to the offspring |
| 3. | Offspring are formed at different times |
| 4. | DNA of the parent and offspring are completely different. |
Subtopic: Asexual Reproduction |
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Given below are two statements : one is labelled as Assertion (A) and the other is labelled as Reason (R).
In the light of the above statements, choose the most appropriate answer from the options given below :
| Assertion (A): | The term clone can be used to describe the progeny of asexual reproduction. |
| Reason (R): | The progeny of asexual reproduction are morphologically and genetically similar individuals. |
| 1. | Both (A) and (R) are true and (R) is the correct explanation of (A). |
| 2. | Both (A) and (R) are true but (R) is not the correct explanation of (A). |
| 3. | (A) is true but (R) is false. |
| 4. | (A) is false but (R) is true. |
Subtopic: Asexual Reproduction |
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The diagram shows budding in yeast. What will be true for the process?
| I: | The nucleus does not divide at all and the bud does not have genetic material. |
| II: | The division is unequal and small buds are produced that remain attached initially to the parent cell which, eventually get separated and mature into new yeast organisms. |
| 1. | Only I | 2. | Only II |
| 3. | Both I and II | 4. | Neither I nor II |
Subtopic: Asexual Reproduction |
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Asexual method of reproduction by binary fission is common to which of the following?
| 1. | Some eukaryotes |
| 2. | All eukaryotes |
| 3. | Some prokaryotes |
| 4. | All prokaryotes |
Choose the correct option from the following:
| 1. | i and ii | 2. | ii and iii |
| 3. | i and iii | 4. | iii and iv |
Subtopic: Asexual Reproduction |
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Encystation during unfavorable conditions followed by multiple fission and sporulation when favorable conditions return is seen in:
| 1. | Sponges | 2. | Penicillium |
| 3. | Amoeba | 4. | Hydra |
Subtopic: Asexual Reproduction |
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Identify the incorrect statement :
| 1. | In asexual reproduction, the offspring produced are morphologically and genetically identical to the parent |
| 2. | Zoospores are sexual reproductive structures |
| 3. | In asexual reproduction, a single parent produces offspring with or without the formation of gametes |
| 4. | Conidia are asexual structures in Penicillium |
Subtopic: Asexual Reproduction |
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Match the asexual reproductive structure in COLUMN I with organisms in COLUMN II and select the correct option from the codes given:
|
|
COLUMN I |
|
COLUMN II |
|
A. |
Zoospore |
a. |
Penicillium |
|
B. |
Conidia |
b. |
Chlamydomonas |
|
C. |
Buds |
c. |
Sponge |
|
D. |
Gemmule |
d. |
Hydra |
| Options: | (A) | (B) | (C) | (D) |
| 1. | a | b | c | d |
| 2. | d | c | b | a |
| 3. | c | d | a | b |
| 4. | b | a | d | c |
Subtopic: Asexual Reproduction |
94%
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