BIOL 1020 Lecture 1: Lecture 23_2014_Handout.pdf

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greenweasel249

3 Dec 2014

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Many plants can remove toxins such as heavy metals from soils: many plants can remove. _______________ such as heavy metals from soils by. _________________th em in their bodies: after hurricane katrina, sunflowers were used to remove toxins from soils in some parts of new. Three tissue systems make up the plant body: each plant organ (________________________) has three types of tissues, ___________________provides a protective outer covering, ___________________ provides support and long distance transport, ___________________ composes the bulk of the plant body and is involved in. The plasma membranes of root cells control solute uptake: water and solutes can move through the root"s epidermis and cortex by going, root hairs greatly increase a root"s absorptive. Once the water and solutes reach the endodermis, a continuous waxy barrier called the. ___________________, the accumulation of water in roots by osmosis, can push xylem sap up a few meters.

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Please help! Also, explain answers if you can. Thanks!

If you examine plant life in a very arid place like deathvalley, you may find some herbaceous desert plants that do not have any anatomical features for water conservation. How would you expect this as someone who has studied botany?

A. they absorb moisture from the atmosphere during night

B. they can grow with very little available water.

C. they can exist and grow for long periods on stored water.

D. they complete life cycle within the short time there is sufficient moisture.

E. they use crassulacean acid metabolism pathway

Which of the following is a difference between a prairie grassland and a savanna grassland?

A. Prairie soils are rich in nutrients

B. Savannas have provided some of the most productive agricultural lands.

C. Prairies support an immense population of animals.

D. Savannas have scattered tall trees

Why are sclerophyllous shrubs the dominant forms of chaparral vegetation?

A. plants are too densely grown preventing the development of large leaves

B. because there are prolonged dry spells and extreme drought in the summer months.

C. large population of herbivores feed on softer leaves on other species

D. the elevation prevents other forms of plant life.

Bogs are areas with acidic soils in which carnivorous plants can often be found preying on insects. If insects are a good source of nitrogen, why don ?t more plants in all other ecosystems adopt carnivorous habits?

A. plants in other habitats obtain nitrogen from bacteria in their root nodules.
B. insects in other habitats do not contain as much nitrogen.
C. insects are more mobile and hard to catch in non-swampy areas.
D. it is more energy efficient to absorb nitrogen from soils that are not deficient of nitrogen

Hello, can you help answer these and explain answers to them?

A. plants in other habitats obtain nitrogen from bacteria in their root nodules.

B. insects in other habitats do not contain as much nitrogen.

C. insects are more mobile and hard to catch in non-swampy areas.

D. it is more energy efficient to absorb nitrogen from soils that are not deficient of nitrogen

Millions of acres of spruce trees have been killed due an explosive increase in spruce bark beetles in recent years, and scientists suggest global warming as the underlining cause. How could this be related to global warming?

A. longer, warmer seasons have resulted in increased beetle populations.

B. spruce is more susceptible to beetles at high temperatures.

C. global warming is the cause of acid rain, and the trees are being weakened.

D. spruce bark beetles did not attack spruce trees until the Industrial Revolution.

In sustainable farming practices involving crop rotation, should the land be covered at all times with plant material?

A. No, the decaying foliage harbors disease.

B. No, it should be tilled under to add nutrients to the soil.

C. yes, because this minimizes the breeding of pests in soil

D. yes, this lessens erosion of topsoil.

What is the term for species that have much larger impact on an environment than would be predicted from their biomass?

A. primary species
B. dominant species
C. primary producers
D. keystone species

I am having trouble with these. Can you please explain correct answer for each? Thank you so much!

Which of these would you find in the benthic zone of a freshwater lake?

A. large fish

B. submerged flowering plants

C. bacteria

D. green algae

A. plants in other habitats obtain nitrogen from bacteria in their root nodules.

B. insects in other habitats do not contain as much nitrogen.

C. insects are more mobile and hard to catch in non-swampy areas.

D. it is more energy efficient to absorb nitrogen from soils that are not deficient of nitrogen

A. longer, warmer seasons have resulted in increased beetle populations.

B. spruce is more susceptible to beetles at high temperatures.

C. global warming is the cause of acid rain, and the trees are being weakened.

D. spruce bark beetles did not attack spruce trees until the Industrial Revolution.

In sustainable farming practices involving crop rotation, should the land be covered at all times with plant material?

A. No, the decaying foliage harbors disease.
B. No, it should be tilled under to add nutrients to the soil.
C. yes, because this minimizes the breeding of pests in soil
D. yes, this lessens erosion of topsoil.

BIOL 1020 Lecture 1: Lecture 23_2014_Handout.pdf

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