Biological system Ch 5

Question 1

What are multicellular organisms composed of?

Answer 1

specialised cells (which interact to form tissues)

Question 2

What do cells need to function?

Answer 2

Nutrients, oxygen,remove waste and toxic substances, regulation (eg temp)

Question 3

Animal Tissue: Muscle

Answer 3

contracts to excert a force, eg. skeletal, cardiac, smooth

Question 4

Animal Tissue: nervous

Answer 4

detects stimuli and transmits electrical signals

Question 5

Animal Tissue: connective

Answer 5

connect/ support other tissues and organ structures of body

Question 6

Animal Tissue: epithial

Answer 6

these tissues assist in protection, secretion, and absorbtion

Question 7

Eg some Animal organs

Answer 7

thyroid, brain, lungs, liver , intestines, heart stomach, kidney, stomach

Question 8

Vascular?

Answer 8

-Complex plants that contain vascular tissues,
-transporting water and minerals through plant.

Question 9

Non- vascular

Answer 9

-do not contain vascular tissue
-only require simplified tissue to funtion

Question 10

Plant Cells: parenchyma, sclerenchyma, collenchyma

Answer 10

1. photosynthestis
   2 and 3 support plant

Question 11

Plant Cells: xylem, phoem

Answer 11

1. transport of water and minerals (roots to leaves)
2. transport of sugars and other nutrients (both directions)

Question 12

Plant tissue: Dermal

Answer 12

single layer covering the outside of plant
-secretes waxy film called cuticle providing physical barrier

Question 13

Plant Tisse: Ground

Answer 13

-make up majority of the plant
-carries out metabolic funtions.

Question 14

Plant Tissue: Vascular

Answer 14

transport nutrients + water

Question 15

Plant Organs: Leaves

Answer 15

Gas exchange for photosynthesis

Question 16

Plant organs:flowers

Answer 16

sexual reproduction organs, fertilised flowers become seeds and fruits.

Question 17

Plant Organ: stem

Answer 17

support plant transport water + nutrients

Question 18

Plant Orgna: Fruit

Answer 18

Protect seeds, attract animals

Question 19

Plant Organ: roots

Answer 19

water+ nutrients form soil absorbed provide support

Question 20

Plant System: Root

Answer 20

underground where water + nutrients are absorbed from soil.

Question 21

Plant System: Shoot

Answer 21

made up of reproductive + non-reproductive sections of plant.

Question 22

Movement Of Water: Transpiration

Answer 22

passive movement of water up the xylem, exit via stomata pores.

Question 23

Why does transpiration occur?

Answer 23

osmosis in roots, air pressure, capillary action.

Question 24

Why do guard cells surround stomata?

Answer 24

to regulate water loss

Question 25

Stomata open Stomata Closed

Answer 25

allow gas exchange (water lost) no gas exchange (water maintained)

Question 26

The 2 Capillary actions are...

Answer 26

Cohesion-water molecules sticking to eachother Adhesion- water sticking to sides of the tube

Question 27

What makes transpiration increase, Decrease?

Answer 27

Increase- strong wind, low humidity decrease- low temp, high humidity, low water availabiliy

Question 28

Movement of Water: Translocation

Answer 28

occurs in ploem, active movement of sugars and nutrients (up and down) from a source (leaves) to a sink (other areas of plant)

Question 29

Purpose Of Transpiration?

Answer 29

Cooling water and mineral transport

Question 30

Purpose Of Translocation?

Answer 30

Providing energy supply to cells

Question 31

Digestive System: 1. Ingestion 2. Digestion

Answer 31

1. food taken through mouth as large particles 2. most digestion occurs after chewing, by enzymes acting on food

Question 32

Digestive System: 3. Absorption 4. Elimination

Answer 32

3.products of digestion can be absorbed across gut lining (lower in gut salts and water are also reabsorbed) 4.Elimination: Undigested material + waste products of digestion are formed

Question 33

Digestive System: Mechanical

Answer 33

Process in which digestive organs and tissues (eg Stomach) break down food into small peices.

Question 34

Digestive System: Chemical

Answer 34

after mechanical, breaks down small foods further using enzymes and stomach acids (produce molecules capable of being absorbed).

Question 35

Major Enymes?

Answer 35

Analase (carbs, Protease (proteins, Lipase (lipids)