unit 2 topic 2

Question 1

we need to understand the structure of plants and how they adapt so that we can…

Answer 1

match the plants with conditions where they can grow well

Question 2

roots perform several important function:

Answer 2

they absorb water and minerals from soil;

they support and anchor the plant so that it is not blown over by wind or washed away by water; and

they are store food. to help the plant survive during times of scarcity

Question 3

what is a taproot

Answer 3

a single prominent root with numerous small roots coming out of it

Question 4

what is an example of a taproot

Answer 4

a carrot

Question 5

what are root hairs

Answer 5

tiny hairs that cover the small roots coming out of a tap root. They increase the plant’s ability to absorb water and nutrients

Question 6

what is a fibrous root

Answer 6

This is a shallow system of similar sized roots that can quickly soak up moisture

Question 7

what is diffusion

Answer 7

The weakness particles on a gas or liquid to become evenly distributed by moving from areas of greater concentration to areas of lesser condensation

Question 8

what is osmosis

Answer 8

Is a type of diffusion in which only some types of particles are allowed to pass through a barrier.

Question 9

what is Chlorophyll

Answer 9

A pigment in plants that makes leaves green

Question 10

what is photosynthesis

Answer 10

The process by which plants make their own food using the sun

Question 11

what is respiration

Answer 11

The process in which oxygen is used to get energy from food. take in oxygen and give out carbon dioxide at night.

Question 12

what is differentially permeable

Answer 12

cells that allow some materials to pass through while keeping others out such as water and nutrients

Question 13

what is heartwood

Answer 13

is a dead wood in the centre of the tree. It gives the tree its strength

Question 14

what is xylem

Answer 14

carries water and nutrients from the roots up to the leaves. As new layers develop, the inner layers die and become heartwood

Question 15

what is the cambium

Answer 15

is the growing part of the trunk. Each year the cambium produces new phloem and xylem

Question 16

what is phloem

Answer 16

is the layer of cells that carries sugars from the leaves tot he rest of the tree. As these cells die, they become part of the outer bark

Question 17

what is the bark

Answer 17

Is the woody skin that stops a tree from dying out. It protects and insulates the tree.

Question 18

what is the relationship among the xylem and phloem

Answer 18

plants have two different types of transport tissue, xylem transports water and solutes from the roots to the leaves. Phloem transports food and sugar from the leaves to the rest of the plant

Question 19

what is the relationship among diffusion and osmosis

Answer 19

they both allow roots to absorb water and dissolve substances.

Question 20

what is the relationship among chlorophyll and photosynthesis

Answer 20

chlorophyll helps the leaf turn into photosynthesis it works best when when chlorophyll is at the top

Question 21

what is the relationship between root crop and tuber

Answer 21

the relationship between root crop and tuber is that they are both roots and help each other in their growing process.

Question 22

explain the relationship between stomata and photosynthesis

Answer 22

photosynthesis takes place near the top surface of the leaf where the sunlight is strongest. Gas exchange occurs through stomata

Question 23

What is the advantage of having most of the chlorophyll in cells near the top of the leaf?

Answer 23

The advantage of having chlorophyll in a leaf it makes the plant healthy looking, and makes it a little stronger than dieing right away. `

Question 24

what is the function of the stem

Answer 24

to hold up the plant and transfer water, nutrients, and sugar throughout the plant.