Domesticated banana plants produce seedless fruit because they are______ . a. triploid d. propagated by grafting b. monocots e. treated with colchicine c. endangered f. infected with Phylloxera
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Domesticated banana plants produce seedless fruit because they are______ .
a. triploid d. propagated by grafting
b.
c. endangered f. infected with Phylloxera
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- If the VIN3 gene had a loss-of-function mutation, how do youthink that would affect the phenotypes of summer-annual andwinter-annual Arabidopsis plants?a. Neither type would flower.b. Both types would flower at the proper time.c. The summer type would flower, but the winter type wouldnot.d. The winter type would flower, but the summer type wouldnot.The trait of male sterility in corn was used to a. avoid self-pollination b. be susceptible to a fungus c. make harvesting easier d. prevent rotting of ears e. produce taller plantsOver the course of plant evolution, there has been an increasing dominance ofa. the gametophyte generation.b. C4 photosynthesis.c. angiosperms.d. the sporophyte generation.
- A fruit is(A) a mature ovary.(B) a mature ovule.(C) a seed plus its integuments.(D) an enlarged embryo sac.The monopteros mutant (a) lacks a primary root (b) develops normally until the plant becomes reproductive (c) has abnormal leaf morphogenesis (d) was discovered in rice after its genome was sequenced (e) is one of only two developmental mutants known in Arabidopsis.The female gametophyte in flowering plants is also called the (a) polar nuclei (b) anther (c) embryo sac (d) endosperm (e) sporophyll
- Flower shape, scent, color, and the presence of nectar in the flowers of some angiosperms function toa. deter predators.b. attract animal pollinators.c. deter insect pests.d. enhance symbiosis.In a flower garden, a horticulturist is growing purple and white pansies. The horticulturist notices that a new pansy has sprouted. When it finally flowers, the pansy is lavender. Explain how this happened.The alternation of generations life cycle applies to gymosperms in that: A. the gametophyte stage is reduced B. the sporophyte stage is reduced C. the gametes are produced via meiosis D. the spores are produced via meiosis
- A plant mutant that shows normal gravitropic bending butdoes not store starch in its plastids would require a reevaluationof the role of _____________ in gravitropism.(A) auxin(B) calcium(C) statoliths(D) differential growthFruit forms from a flower’sa. ovary.b. sepals.c. carpels.d. stigma.A seed is a(n)_______ . a. female gametophyte c. mature pollen tube b. mature ovule d. immature microspore