ASEXUAL REPRO
PEOPLE AND PLANTS
PLANTS IN ENVIRON
REPEAT RESPONSES
THIS AND THAT
100

Another term for asexual reproduction in plants.

What is vegetative propagation?

100

Most plants that we eat typically reproduce through this type of reproduction.

What is sexual reproduction?

100

A term for underground water reservoirs.

What is an aquifer?

100

Directionally dependent responses.

What is a tropism?

100

This hormone is a gas.

What is ethylene?

200

An organism that is genetically identical to the parent plant.

What is a clone?

200
Plants' most significant contribution to our wellbeing is this.

What is the production of food?

200

This process releases water from the ground into the atmosphere where it joins water evaporated from oceans, lakes, and rivers to form clouds.

What is transpiration?

200

Growing against gravity.

What is negative gravitropism?

200

This is the period during the twentieth century marked by advances in agricultural technology that led to greatly increased global food production.

What is the Green Revolution?

300

These produce new plants by sending out buds, such as the eyes on a potato.  They are underground stems that swell to store nutrients.

What are tubers?

300

This type of ordinary potato has been certified to be free of disease.  You can buy them at Farm King.

What are seed potatoes?

300

Plants can have a huge effect on local this (the average weather in an area over an extended length of time).  Because of this, urban planners in recent years have increased the number of green spaces in cities.

What is climate?

300

The least understood of all the tropisms.

What is hydrotropism?

300

These are only representations of reality and so are always subject to revision or even replacement.

What are models?

400

An underground bud, like those of an onion, are called this.

What are bulbs?

400

The goal of this process is to connect the xylem and phloem of the scion and the stock.  You see it a lot with fruit trees.

What is grafting?

400

By holding soil particles in place, lessening the force of moving water, and acting as windbreaks, plants greatly help in controlling this. 

What is erosion?

400

The response of a plant to changes in the duration and intensity of light exposure.

What is photoperiodism?

400

This type of pressure gives a plant its rigidity.

What is turgor pressure?

500

These underground stems are solid, white bulbs with scales or layers.  

What are corms?

500

In this process, a branch of the plant, usually a bushy plant such as a holly or azalea, is bent to the ground and a portion of it is buried.  The remaining part of the branch is staked to force it to grow upward.  

What is layering?

500

Virtually all the organisms on the earth depend on this to keep a supply of energy entering the ecosystem.

What is the sun?

500

This type of plant won't flower until the length of nighttime is less than a certain amount.

What are long-day plants?

500

Although the fluids in xylem and phloem are different from one another, they are both often called this.

What is sap?