Lucture 1

Question 1

What is life science ?

Answer 1

It is the scientific study of living things .

Question 2

How many species on earth?

Answer 2

More than 10 million, range in size from microscopic bacteria to blue whales

Question 3

How can we decide if something is living or not?

Answer 3

By the 7 life processes

Question 4

How do plants moves?

Answer 4

rooted and move slowly as they grow
A. Their roots move down into the soil and
B.their stems move up towards the light

Question 5

How do animals move?

Answer 5

a. move quickly and can move their entire bodies
b. Move in search of food, shelter or to avoid danger.

Question 6

What is respiration?

Answer 6

Process involves taking in oxygen (of air) into the cells

Question 7

Respiration in plants and animals?

Answer 7

Provide energy for carrying out all the life processes
Which are necessary to keep the living thing alive.

Question 8

What is cellular respiration?

Answer 8

Respiration which releases energy, takes place inside the cells of the body d

Question 9

What is sensitivity?

Answer 9

The ability to detect changes in the surrounding environment.

Question 10

Sensitivity in plants ?

Answer 10

A)they respond to the light by moving their leaves towards it
B) the flowers of some plants open in the morning and close at the night when it is dark.
C) some plants respond quickly to touch suchas: touch me not plants (mimosa pudica)and
Venus flytrap.

Question 11

Growth in animals?

Answer 11

Animals stop growing once they reach adulthood

Question 12

Growth in plants?

Answer 12

Plants continue growing throughout their lives

Question 13

If animals stop growing once they reach adulthood does that mean that the materials within on animal’s body stop growing?

Answer 13

No they are still being replaced.

Question 14

What is excretion?

Answer 14

It is the process of getting rid of metabolic waste.

Question 15

Where plants store waste substances?

Answer 15

In the leaves

Question 16

When the waste is removed in plants?

Answer 16

When their leaves fall off

Question 17

How plants produce waste products?

Answer 17

In the form of two gases carbon dioxide and oxygen.
Carbon dioxide during respiration
Oxygen during photosynthesis

Question 18

How can plants excrete oxygen and Carbon dioxide?

Answer 18

Through a structure called ** stomata **

Question 19

How can animals get rid of waste?

Answer 19

1) breath out waste carbon dioxide
2)other waste substances leave the body as urine, sweat, tears.

Question 20

Sensitivity in animals?

Answer 20

Animals respond quickly to stimuli such as heat, sound, touch and Chemicals.

Question 21

What is reproduction?

Answer 21

ability to produce copies of itself- important for the continuity of life.

Question 22

What is the importance of reproduction?

Answer 22

Important for the continuity of life and formation of new generations

Question 23

How reproduction goes for plants?

Answer 23

They produce seeds that give rise to new plants of the same species.

Question 24

How reproduction goes for animals?

Answer 24

They lay eggs or have babies.

Question 25

Why do we need nutrition?

Answer 25

For energy and growth

Question 26

Do planta make their own foods

Answer 26

Yes by photosynthesis, they use sunlight to turn simple molecules like water and carbon dioxide into more complex carbohydrate molecules

Question 27

How is nutrition in animals?

Answer 27

Animals are unable to make their own food so they rely on other plant and animals.
Animals make complex substances and break them down into small, simple., soluble molecules which can be used for energy and growth.