Q.Which of the following correctly describes transgenic (GM) plants? a.have been

ID: 218606 • Letter: Q

Question

Q.Which of the following correctly describes transgenic (GM) plants?

a.have been bred over hundreds of generations to include special traits

b.have been grown in tissue culture

c.contain bacteria

d.have been crossed with another species to get a hybrid

e.have had foreign or altered genes introduced into their genomes

Q.Which of the following are major threats to plant biodiversity and conservation?

a.Loss of energy through trophic energy transfer

b.Invasive species, land clearing and habitat destruction, pollution

c.Erosion and loss of agricultural topsoil

d.Genetic modification of plants

e.Herbivory by insects and mammals, and pathogens

Q. Which of the following correctly describes sensory responses and hormones in plants?

a.Plants use hormones to respond to biotic stimuli (e.g. pathogens) only

b.Plants respond to light by phototropism which is regulated by ethylene

c.Ethylene inhibits fruit ripening and cell elongation

d.Auxin is involved in cell elongation required for phototropic responses

e.Gibberellins cause gravitropism

Q. e.have had foreign or altered genes introduced into their genomes

Q. b.Invasive species, land clearing and habitat destruction, pollution

Q. d.Auxin is involved in cell elongation required for phototropic responses

a is false since hormones are required for growth, development, defense and reproduction of plants not just defense

b is false, its auxin not ethylene

c is false ethylene promotes fruit ripening

e. gibberlins dont cause gravitopism, its auxin

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