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Do you think that a weed with vegetative reproduction will be more difficult to control than one that reproduces only by seed in a disturbed site? Why? Please use two or more examples to defend your position.

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Trinidad Tremblay
Trinidad TremblayLv2
28 Sep 2019

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Related questions

Help please! Explain answers if possible. thanks

Tundra plants rely on vegetative reproduction or autogamy for reproduction. Why? (find out what autogamy is)

A. vegetative reproduction and autogamy greatly increase genetic diversity.
B. There must be low numbers and unreliability of pollinators.
C. these two reproduction methods make the plants more adaptable to changing conditions.
D. outbreeding only weakens subsequent generations.

What is meant by the word 'sustainability'
A. returning the natural environment to pre-industrial conditions
B. increasing agricultural output to feed the growing human population
C. preventing excessive urban developments

D. maintenance of a healthy environment and reasonable standard of living

What is the main reason so many species are currently under threat of extinction?

A. extinctions are cyclic, and we are in a peak now
B. habitat destruction and transformation
C. lack of appropriate ecosystem services
D. overhunting and overfishing by humans

Hello, I need help on these. Please explain if you can! Thank you.

Fire is a common occurrence in prairie grasslands. What do you think would happen to a grassland area if fire were excluded for many decades?

A. some trees would slowly begin to appear.
B. there would be no change.

C. it would become a desert.

D. it would slowly turn into a tropical rainforest ​

You were strolling in art museum with a friend and paused to admire a painting of a forest. You noticed tall emergent trees, dense canopy full of wildlife, a lot of climbers and pretty epiphytes. Your friend is eager to know what type of forest it is. What would you say?

A. it is definitely a tropical rain forest
B. it is a montane coniferous forest
C. it must be a mangrove forest
D. it is a temperate deciduous forest

D. it would slowly turn into a tropical rainforest

Tundra plants rely on vegetative reproduction or autogamy for reproduction. Why?

A. vegetative reproduction and autogamy greatly increase genetic diversity.
B. There must be low numbers and unreliability of pollinators.
C. these two reproduction methods make the plants more adaptable to changing conditions.

D. outbreeding only weakens subsequent generations.


Which of the following sets of organisms would you expect to find in a herb barren (a polar desert)?

A. mosses, mangroves, lichens
B. conifers, lichens, cyanobacteria
C. None; herb barrens cannot support life.
D. mosses, lichens, cyanobacteria
E. Lianas, lichens, epiphytes

Human pressures lead to changes in the life history of organisms, with potentially huge consequences for fitness.

a) Fish harvesting can favor fish that reproduce earlier even if they produce fewer offspring. Suppose that a fish that reprodcues at age 3 years produces 20 eggs that will survive to adulthood, while one that reproduces at age 2 years produces only 5. If fish die after reproducing, which population will grow faster? One way to do this is to figure out which population would be larger after 6 years, which is two generations for those that reproduce every 3 years, and three generations for those that reproduce every 2 years.

b) Suppose half of the fish are harvested between ages 2 and 3 years. Which age of reproduction is now favored? what other effects do you think this would hvae on the population?

c) Compare this scenario to the effects of giving up migration. What information would you need to compute whether birds that spend the winter in cities will do better than those that continue to migrate?

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