Multiple Choice QuestionsThe arrangement of the nuclei in a normal embryo sac in the dicot plants is
2+4+2
3+2+3
2+3+3
2+3+3
An enzyme that can stimulate germination of barley seeds is
α-amylase
lipase
protease
protease
In a cereal grain the single cotyledon of embryo is represented by
coleorhiza
scutellum
prophyll
prophyll
A.
coleorhiza
In a cereal grain (e.g., wheat), the single cotyledon of embryo is represented by the scutellum. Scutellum is specialized for nutrient absorption from the endosperm.
Coleoptile is a modified ensheathing leaf that covers and protects the young primary leaves of a grass seedling.
Coleorhiza is a sheath-like structure found on the radicle which covers and protects it during the growth into the soil.
Attractants and rewards are required for
Anemophily
Entomophily
Hydrophily
Hydrophily
A dioecious flowering plant prevents both:
Autogamy and xenogamy
Autogamy and geitonogamy
Geitonogamy and xenogamy
Geitonogamy and xenogamy
Functional megaspore in an angiosperm develops into
Ovule
Endosperm
Embryo sac
Embryo sac
Flowers which have single ovule in the ovary and are packed into inflorescence are usually pollinated by
Water
Bee
Wind
Wind
Double fertilization is
Fusion of two male gametes of a pollen tube with two different eggs
Fusion of one male gamete with two polar nuclei
Syngamy and triple fusion
Fusion of two male gametes with one egg
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