Multiple Choice QuestionsWhich one correctly describe reproduction and life cycle of fern?
Spore → Gamete → Prothallus → Sporophyte
Gamete → Spore → Prothallus → Plant
Prothallus → Sporophyte → Gamete → Fern
Sporangia → Spore → Prothallus → Sporophyte → Plant
C.
Prothallus → Sporophyte → Gamete → Fern
During favourable month sporangia are produced on the underside of the margin of leaves in ferns. After development, it becomes dry and bursts so release spores. These spores germinate on the suitable substrate. Each spore absorbs water, then ruptures and produce gree filament which grows into prothallus (heart-shaped) prothallus develops into young sporophyte which in turn grows into an adult plant.
Which of the following properties is shown by cytokinins?
Delay leaf senescence
Cause leaf abscission
Promote seed dormancy
Promote stornatal closing
The year 1900 AD is highly significant for geneticists due to
Discovery of genes
Principle of linkage
Chromosome theory of heredity
Rediscovery of Mendelism
F1-generation means
First filial generation
First seed generation
First flowering generation
First fertile generation
Which of the following cross will produce terminal flower in garden pea?
AA x Aa
AA x aa
Aa x Aa
Aa x AA
Which one of the following pairs of plants are not seed producers?
Funaria and Ficus
Fern and Funaria
Funada and Pinus
Ficus and Chlamydomonas
Study the following statements and select the correct option.
I. Tapetum nourishes the developing pollen grains.
II. Hilum represents the junction between ovule and funicle.
III. In aquatic plants such as water hyacinth and water lily, pollination is by water.
IV. The primary endosperm nucleus is triploid.
I, II, and IV are correct, but III is incorrect
I and II are correct, but III and IV are incorrect
I and IV are correct, but II and III are incorrect
I, Ill and IV are correct, but I is incorrect
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