EASY
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Which of the following protozoan shows hologamy?

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Important Questions on Reproduction in Organisms

EASY
Biology>Reproduction>Reproduction in Organisms>Sexual Reproduction
Which one of the following generates new genetic combinations leading to variation?
EASY
Biology>Reproduction>Reproduction in Organisms>Sexual Reproduction
Which of the following plants is monoecious?
MEDIUM
Biology>Reproduction>Reproduction in Organisms>Sexual Reproduction
Choose the correct statements from the following:
A) Meiosis has to occur if a diploid body has to produce gametes
B) In Cladophora it is not possible to categorise the male and female gametes
C) Organisms exhibiting external fertilization show greater synchrony between sexes
D) In Wolffia isogametes can be seen
EASY
Biology>Reproduction>Reproduction in Organisms>Sexual Reproduction
Which of the following animal is not viviparous?
EASY
Biology>Reproduction>Reproduction in Organisms>Sexual Reproduction
In some plants, the female gamete develops into embryo without fertilization. This phenomenon is known as
EASY
Biology>Reproduction>Reproduction in Organisms>Sexual Reproduction
Chose the incorrect statement of gamete transfer.
MEDIUM
Biology>Reproduction>Reproduction in Organisms>Sexual Reproduction
Assertion (A): Zygote is the link between two generations
Reason (R): Zygote is the product of two gametes and producer of next generation
MEDIUM
Biology>Reproduction>Reproduction in Organisms>Sexual Reproduction
Match the items given in Column I with those in Column II and select the correct option given below:
 
  Column – I   Column – II
a. Proliferative Phase i. Breakdown of an endometrial lining.
b. Secretory Phase ii. Follicular Phase
c. Menstruation iii. Luteal Phase
EASY
Biology>Reproduction>Reproduction in Organisms>Sexual Reproduction

Match the following:

  List - I   List - II
A) Isogamy I) Vorticella
B) Anisogamy II) Plasmodium
C) Hologamy III) Monocystis
D) Conjugation IV) Amoeba
    V) Trichonympha

The correct match is

EASY
Biology>Reproduction>Reproduction in Organisms>Sexual Reproduction
Which one of the following does NOT represent asexual reproduction?
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Biology>Reproduction>Reproduction in Organisms>Sexual Reproduction
Strobilanthus kunthiana flowers once in _______
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Biology>Reproduction>Reproduction in Organisms>Sexual Reproduction
The fish which keeps the fertilised eggs guarded in the mouth and exhibits buccal incubation is
HARD
Biology>Reproduction>Reproduction in Organisms>Sexual Reproduction
Which of the following flowers only once in its life-time?
EASY
Biology>Reproduction>Reproduction in Organisms>Sexual Reproduction
Which is the most common mechanism of genetic variation in the population of sexually-reproducing organism?
MEDIUM
Biology>Reproduction>Reproduction in Organisms>Sexual Reproduction
Morphologically and Physiologically similar and usually motile and flagellated gametes are known as_____and its correct example is _____.
MEDIUM
Biology>Reproduction>Reproduction in Organisms>Sexual 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>Sexual Reproduction
Which one of the following shows isogamy with non-flagellated gametes?
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Biology>Reproduction>Reproduction in Organisms>Sexual Reproduction
Offspring formed due to sexual reproduction have better chances of survival. Why? Is this statement always true?
MEDIUM
Biology>Reproduction>Reproduction in Organisms>Sexual Reproduction
Consider the following (a to f)

a. All annuals

b. Few biennials

c. All biennials

d. Few perennials

e. Perennials mostly

f. Monocarpic plants

Find correct option w.r.t. plants showing clear-cut vegetative, reproductive and senescent phases.
EASY
Biology>Reproduction>Reproduction in Organisms>Sexual Reproduction
Higher organisms have resorted to sexual reproduction in spite of its complexity. Why?