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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


C.

Yeasts have filamentous bodies with long thread-like hyphae.

Yeast is an unicellular sac fungus. It lacks filamentous structure or hyphae.


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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


Why do algae and fungi shift to sexual mode of reproduction just before the onset of adverse conditions?


In some plants, the female gamete develops into embryo without fertilization. This phenomenon is known as

  • Parthenocarpy

  • Syngamy

  • Parthenogenesis

  • Autogamy


Give an example of an organism that enters 'diapause' and why.


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