Why do algae and fungi shift to sexual mode of reproduction just before the onset of adverse conditions?
Organisms such as fungi and algae switch to sexual mode of reproduction during adverse conditions because sexual reproduction brings variation into the individuals, some of which might help the individuals to adapt to the changed conditions and survive. This ensures the continuity of species.
Which of the following statements is incorrect?
Claviceps is a source of many alkaloids and LSD.
Conidia are produced exogenously and ascospores endogenously
Yeasts have filamentous bodies with long thread-like hyphae.
Morels and truffles are edible delicacies
Oogamous type of reproduction is seen in
(i) Fucus
(ii) Anabaena
(iii) Nostoc
(iv) Volvox
(i) only
(i) and (ii) only
(i) and (iii) only
(iii) only
(iii) only
Give an example of an organism that enters 'diapause' and why.
In some plants, the female gamete develops into embryo without fertilization. This phenomenon is known as
Parthenocarpy
Syngamy
Parthenogenesis
Autogamy
