Multiple Choice QuestionsMonoecious plant of Chara shows occurrence of
antheridiophore and archengoniophore on the same point
stamen and carpel on the same plant
upper antheridium and lower oogonium on the same plant
upper antheridium and lower oogonium on the same plant
Which of the following pairs is not correctly matched?
In vitro clonal propagation in plants is characterised by
PCR and RAPD
Northern blotting
Electrophoresis and HPLC
Electrophoresis and HPLC
Which is the most common mechanism of genetic variation in the population of sexually reproducing organism?
Transduction
Chromosomal aberrations
Genetic drift
Genetic drift
Which one of the following matches is correct?
| Phytophthora | Aseptate mycelium | Basidiomycetes |
| Alternaria | Sexual reproduction | Deuteromycetes |
| Mucor | Reproduction by conjugation | Asocmycetes |
| Mucor | Reproduction by conjugation | Asocmycetes |
B.
| Alternaria | Sexual reproduction | Deuteromycetes |
(i) Phytophthora belongs to Phycomycetes (algal fungi). They contain either unicellular thallus or non-separate coenocytic mycelium. They are mostly plant damaging Oomycetes (water molds).
(ii) Alternaria is Deuteromycetes (fungi imperfecti), which lacks sexual reproduction.
(iii) Mucor also belong to Phycomycetes. They have mycelium which is coenocytic (multinucleate) and profusely branched. They reproduce vegetatively via conjugation.
(iv) Agaricus belongs to Basidiomycetes (where karyogamy and meiosis occur). They contain well-developed filaments, branched and septate mycelium. They are saprophytic but parasitic.
So, hence (b) option is correctly matched.
What will you look for to identify the sex of the following?
male frog - a copulatory pad on the first digit of the hind limb
Female cock - anal cerci
Male shark - claspers borne on pelvic fins
Male shark - claspers borne on pelvic fins
What is common between vegetative reproduction and apomixis?
Both are applicable to only dicot plants
Both bypass the flowering phase
Both occur round the year
Both occur round the year
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