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In which of the following, cell division is itself a mode of reproduction
Which of the following organisms have the shortest life span?
Which one of the following pairs is correctly matched?
Vegetative reproduction in lilies occurs by
Which of the following statements are incorrect?
(i) Stamens are male reproductive parts whereas carpels are female reproductive parts
(ii) In hydra, asexual reproduction takes place by budding.
(iii) Vegetative propagation by leaves occurs in dahlia
Common mode of reproduction in Chlamydomonas is:
The terms heterothallic and dioecious are used to denote:
Why do some organisms switch from asexual mode to sexual mode during stress conditions because
Match column-I with column- II and select the correct answer using the codes given below.
|A.||Gamete||I.||Result of fusion of male and female gametes.|
|C.||Fission||III.||Division of body into two halves.|
|D.||Syngamy||IV.||The fusion of gametes.|
|E.||Zygote||V.||An unequal division of organisms in which an individual arises as an outgrowth from the parent.|
Choose the incorrect from the following statement.
Sexual reproduction exhibits more variation than asexual reproduction because:
Offsprings of oviparous animals are at greater risk as compared to offsprings of viviparous animals because
Which of the following statements is incorrect regarding asexual reproduction?
Which of the following statements are correct?
(i) Euglena divides by longitudinal binary fission
(ii) Cytokinesis takes place along the transverse axis in Paramoecium.
(iii) Amoeba divides by irregular binary fission.
(iv) In multiple fission, the parental body divides into many daughter cells under favourable conditions.
Match column-I with column-II and select the correct answer using the codes given below.
Meiocytes is observed in all except:
The oestrous cycle occurs in females of
During spermatogenesis, a single male germ cell produces ___ sperm cell(s).
During oogenesis, a single female germ cell produces ___ egg cell(s).
Which one of the following is the most common method of reproduction in the majority of fungi and bacteria?