EASY
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Choose the correct option.
A. Zygotes are universally diploid
B. Zygotes form embryos through mitosis
C. Gametes are universally haploid
D. Gametes are always produced by meiotic cell

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Important Questions on Modes of Reproduction

MEDIUM
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
Which of the following plants is monoecious?
HARD
Which of the following flowers only once in its life-time?
MEDIUM
Morphologically and Physiologically similar and usually motile and flagellated gametes are known as_____and its correct example is _____.
EASY
Which one of the following shows isogamy with non-flagellated gametes?
EASY
Which is the most common mechanism of genetic variation in the population of sexually-reproducing organism?
MEDIUM
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
Which one of the following does NOT represent asexual reproduction?
EASY

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
Which one of the following generates new genetic combinations leading to variation?
EASY
Which of the following animal is not viviparous?
EASY
In sexual reproduction, offsprings resemble the parents
MEDIUM
The male gametes of rice plant have 12 chromosomes in their nucleus. The chromosome number in the female gamete, zygote and the cells of the seedling will be, respectively
EASY
Which of the following is a post-fertilisation event in flowering plants?
MEDIUM
Offspring formed by sexual reproduction exhibit more variation than those formed by asexual reproduction because:
EASY
A plant which lives for a few days is called
HARD
ll organisms have to pass through a particular phase before they can reproduce sexually. What do we call this phase?