Science

Plants absorb nitrogen from:

the soil

The water table is:

the surface of ground water

What substance is transpired through the stomata of the leaves in a plant?

water

What natural laws did Mendel investigate?

genetics

The Industrial Revolution:

helped farmers grow more crops introduced machines to agriculture decreased the amount of manual labor in farming

Which of the following is not a reason for creating hybrid plants?

increase resistance to fertilizer

Increased irrigation demands:

increase the rate of surface water evaporation

Which of the following does not have a global cycle?

iron

Rhizobium bacteria obtain moisture from:

legumes

When a plant is entering the Calvin cycle of photosynthesis_____.

light energy is not required to proceed

Select all that apply. Food production has increased greatly due to the development of:

machines chemicals hybrid plants

Energy for the cell's use is stored when

ADP and P form ATP

The name given to the metabolic pathways in which cells harvest energy from food molecules is

Cellular respiration

During the Calvin cycle:

Glucose and water are produced.

What does the plant do with the extra glucose produced from photosynthesis? Select all that apply.

It is stored in the plant as starch. It is stored in the plant as fructose.

The waste product of photosynthesis is:

Oxygen

During light reactions:

Oxygen is released by stomata. Water is split into hydrogen and oxygen. Light energy is converted into chemical energy.

Mendel's experiments showed that:

Plant characteristics are inherited.

Mendel discovered that:

Plant traits are inherited.

If the water table is not too deep, how do plants tap into it?

Plant's roots can take up water by capillary action.

During glycolysis glucose is broken down into two___ molecules.

Pyruvic acid

Crop rotation is important because:

Some plants use a lot of nitrogen. It increases soil fertility. Repeated planting of the same crops decreases soil quality.

Select all that apply Which statements apply to glycolysis?

Splits a glucose molecule into pyruvic acid Occurs without oxygen present Occurs in all living things

Yeast is a:

fungi

Poor soil quality can be improved by:

planting legumes

In an ecosystem, phosphate levels are usually low because:

the weathering of rock is a slow process

Which of the following statements is true?

Many countries do not have access to modern agricultural processes.

The Krebs cycle is considered a cycle because?

The oxaloacetic acid formed remains in the mitochondria for the next acetyl CoA

Due to food scarcity in ancient times, people had to spend _____.

a great deal more time than today to cultivate and find food

Rhizobium:

are nitrogen-fixing bacteria live in the nodules of legumes convert nitrogen in soil into nitrogen compounds

Condensation occurs when:

atmospheric water changes into precipitation

Herbicides:

can increase crop yields by killing weeds

Plants depend on the atmosphere for the largest source of:

carbon

Burning fossil fuels and wood increases the amount of _____ in the atmosphere.

carbon dioxide

Burning oil and coal adds_____ to the atmosphere.

carbon dioxide

During photosynthesis, plants use____obtained from animals.

carbon dioxide

The waste product of respiration is:

carbon dioxide

Which of the following summarizes photosynthesis?

carbon dioxide + water → glucose + oxygen + water

In animals, extra protein is:

excreted as waste material

After strenuous exercise sore muscles can occur because of?

A buildup of lactic acid in the tissues

Yeast has many commercial uses in the production of

Breads Fuels Wine

The exchange of gases between animals and the environment is called

Breathing

Which of the following statements is true?

The world's production of food is unequally distributed.

Guard cells:

control the size of stomata

What distinguishes a fungi from a plant?

does not contain the photosynthetic pigment chlorophyll

Capillary action:

draws water from the soil to the surface helps the roots of plants obtain water is the upward movement of water between particles of soil

Which two of the following methods were first introduced to slow decay?

drying salting

What improvements have been made in modern farming? Select all that apply.

machines can do more work over less time trains can transport food over long distances faster trains can transport the machines to rural farms once built insecticides used to keep insects off the crops

The process of converting nitrogen into nitrogen compounds by bacteria is called:

nitrification

Select all that apply. Which of the following elements are obtained by plants from the soil?

nitrogen phosphorus potassium

How do bacteria get their food? Select all that apply.

obtain it from decaying organic matter obtain it parasitically from living organisms

The amount of carbon dioxide released into the atmosphere is balanced by the release of:

oxygen

Select all that apply. Which substances pass through a leaf's stomata?

oxygen water carbon dioxide

A large amount of algae in a lake is a result of:

phosphate and nitrogen pollution

Select all that apply. Which of the following elements are obtained by plants from the soil?

phosphorus potassium nitrogen

What kind of foods did ancient people eat?

plants, animals, and fish

The Calvin cycle:

produces glucose and water is the second stage of photosynthesis does not require light

A catalyst:

promotes a chemical reaction

The decay cycle:

reduces the amount of dead material

Destruction of tropical rain forests:

reduces the amount of water vapor

Carbon dioxide is returned to the atmosphere through:

respiration

Select all that apply. Animals return water to the atmosphere through:

respiration perspiration elimination

Most of the phosphorous on earth comes from:

rocks

The main source of phosphorous is in:

rocks

What happens to the precipitation that reaches land? Select all that apply.

runs off into the oceans runs off into streams and rivers enters the water table of groundwater taken up from shallow soil by plants

The amount of nitrogen in the atmosphere is affected by:

sewage treatment plants inorganic nitrogen fertilizers pollution from factories

Nitrogen-fixing bacteria get nitrogen from:

soil

Plants obtain nitrogen from the:

soil

Plants obtain phosphorous from:

soil

Carbon dioxide enters a plant through the:

stomata

Select all that apply. Which statements apply to "food"?

storage medium for energy release energy during decomposition

Extra sugar from photosynthesis is:

stored as starch

Ground water is:

stored in porous soil and rock

What are some of the benefits of a hybrid strain crop? Select all that apply.

stronger more disease resistant better yields

Fertilizers:

supply plants with nutrients and minerals

Which of the following is the correct meaning of transpiration?

the evaporation of water through the stomata

Plants return water to the atmosphere through:

transpiration

The loss of water vapor through stomata is known as _____.

transpiration

What method(s) do plants use to obtain nitrogen? Select all that apply.

use bacteria to convert nitrogen to usable form obtain usable nitrogen compounds from the soil

The most common compound on earth is:

water

A catalyst is a chemical:

which promotes a chemical reaction

Which of the following is a reason for creating hybrid plants?

yield more crops