Sexual Reproduction (Rhizopus) (Leaving Cert Biology): Flashcards
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Condition for sexual reproduction in Rhizopus
Condition for sexual reproduction in Rhizopus
Hyphae of opposite strains grow close together and come into contact
Two strain types in Rhizopus
Two strain types in Rhizopus
Plus (+) strain and minus (-) strain
Which strains reproduce sexually in Rhizopus
Which strains reproduce sexually in Rhizopus
Plus and minus strains only
Chemotropism definition
Chemotropism definition
Growth response to chemicals
Role of chemotropism in Rhizopus
Role of chemotropism in Rhizopus
Attracts hyphae to one another
Swellings with nuclei in Rhizopus
Swellings with nuclei in Rhizopus
Progametangium
Gametangia in Rhizopus
Gametangia in Rhizopus
Progametangia after cross walls separate them from hyphae
Fertilisation process in Rhizopus
Fertilisation process in Rhizopus
Two haploid (n) nuclei join
Product of fertilisation in Rhizopus
Product of fertilisation in Rhizopus
Diploid (2n) zygote
Zygospore in Rhizopus
Zygospore in Rhizopus
Zygote with tough wall
Zygospore state after parent hyphae die
Zygospore state after parent hyphae die
Dormant until conditions favourable
Process during zygospore germination
Process during zygospore germination
Diploid zygote divides by meiosis, forms haploid hypha
Zygospore dispersal method and advantage
Zygospore dispersal method and advantage
Wind; small/light; can reach favourable conditions