Coordination

Question 1

What are the 2 types of tropisms

Answer 1

Phototropism - plants response to light
Gravitropism -plants response to gravity

Question 2

What are the three plant hormones

Answer 2

Auxins - promote cell elongation in shoots and inhibit cell elongation in roots
gibberellins-initiate seed, germination, flowering and growth of fruit
Ethene - control, cell division and ripening of fruits

Question 3

How do you answer a question that I asked you to plant an investigation?

Answer 3

Step one independent variable step to dependent, variable step three controlled, variable step for control, set up step five repeat investigation step, six appropriate equipment in points one to 4

Question 4

What are auxins used for

Answer 4

Used as selective weed killer so growth of weed is controlled by farmers using oxygen is to keep yields high
Used as rooting powder.
Used to cloned plants.

Question 5

What is ethene used for?

Answer 5

Controls cell division of ripening of fruits, during storage and transport production of Ethene is inhibited to dela ripening of fruits.
During display artificially produced Ethene gascan be released to speed up fruit ripening

Question 6

What is giberelins used for

Answer 6

End seed dormancy
Promote flowering
Increase fruit size

Question 7

What are the 4 lobes

Answer 7

Frontal lobe
Parietal lobe
Temporal lobe
Occipital lobe

Question 8

What does the cerebral cortex control?

Answer 8

Consciousness memory, intelligence language

Question 9

What does the cerebellum control?

Answer 9

Muscle coordination and movement

Question 10

What does the Medalla control?

Answer 10

Unconscious activities, breathing

Question 11

What are the 10 parts of the eye

Answer 11

Suspensory ligament
Cornea
Iris
Pupil
Lens
Ciliary muscle
Sclera
Retinal.
Fovea
Optic nerve.

Question 12

Function of cornea

Answer 12

Refract light bends it as it enters the

Question 13

Function of iris

Answer 13

Controls how much light enters the pupil

Question 14

Function of lens

Answer 14

Further refracts light to focus it onto the retina

Question 15

Function of retina

Answer 15

Contains light receptors

Question 16

Function of optic nerve

Answer 16

Carries impulses between the army and brain sensory neuron

Question 17

Function of pupil

Answer 17

Holes that allows light to enter the eye

Question 18

What 2 things surround the pupil

Answer 18

Circular muscle
Radial muscle

Question 19

In dim light what happens to your eye

Answer 19

1light receptors cells detect darkness.
2 radial muscle contract
3 circular muscle relax
4pupil dilates and widens
5 more light enters eye better vision

Question 20

In bright light, what happens to the eye

Answer 20

1light receptor cells detect brightness
2 radio muscle relax.
3 circular muscles contract.
4 pupil constricts and narrows
5 less light enters the eye to avoid retina damage

Question 21

What happened to your eye focusing on near objects

Answer 21

Cilary muscles contract.
Suspensory, ligaments loosen
Lens becomes thicker and refracts, light rays, more strongly.

Question 22

Happens to your eye when focusing on far objects

Answer 22

Ciliary muscles, relax
Suspensory, ligaments appetite.
Lens is poured Finn, and only slightly refracts light rays.

Question 23

What is myopia and what are the causes of it?

Answer 23

Short sightedness
Courses or lens is too thick and curved.
I will is too long.
Light is focused in front of the retina.

Question 24

What is hyperopia and what are the causes of it?

Answer 24

Long sightedness
Causes are eyeball to short
Light is focus behind the retina.

Question 25

How can you treat myopia and hyperopia

Answer 25

Myopia- concave lens
Hyperopia- convex lens

Question 26

What is body temperature controlled by?

Answer 26

Thermoregulator

Question 27

What is positive and negative feedback

Answer 27

Positive feedback is intensify response negative feedback counteracts the response

Question 28

What is the control system?

Answer 28

Stimulus- change in body temp
Receptor.-detects stimulus send nerve impulse
Coordinator.-send impulse to effector
Effector- sweat cells
Response.

Question 29

What three things does the body do if the body is too hot

Answer 29

Sweat.
Vasodilation.
Hair lie flat against the skin

Question 30

What three things does the body do if it’s too cold

Answer 30

Vascoconstriction.
Shivering
Erect hair

Question 31

What is a vasodilation and Vasoconstriction?

Answer 31

Vasodilation – blood vessels supplying blood to the skin can swell or delete this causes more heat to be carried by the blood to the skin, where it could be lost to the air
Vasoconstriction, – decreases blood flow to the skin, which helps to minimise heat loss from warm blood, and therefore preserve a normal internal or cone temp