CHAPTER 1: characteristics of living organisms

Question 1

define organism

Answer 1

a living thing

Question 2

define movement

Answer 2

an action by an organism or part of an organism causing a change in position or place

Question 3

MRSGREN

Answer 3

movement
respiration
sensitivity
growth
reproduction
excretion
nutrition

Question 4

respiration

Answer 4

the chemical reactions in cells that break down nutrient molecules and release energy for metabolism

Question 5

sensitivity

Answer 5

the ability to notice and respond to changes in internal and external environments

Question 6

growth

Answer 6

a permanent increase in size and dry mass (this happens during mitosis and a increase of size in the cells)

Question 7

reproduction

Answer 7

making more of the same thing/ organism/ species

Question 8

excretion

Answer 8

removing waste products of metabolism and extra substances that are required

Question 9

nutrition

Answer 9

taking in materials for energy, growth and development

Question 10

common ancestor

Answer 10

species that lived in the past and is thought to have bought a rise to many different species living today

Question 11

species

Answer 11

group of organisms that can reproduce a fertile offspring

Question 12

fertile

Answer 12

being able to reproduce

Question 13

infertile

Answer 13

being unable to reproduce

Question 14

characteristics of Mammals

Answer 14

Fur or hair on the skin
Have external ears (PINNA)
Fertilise on the inside and give birth to a young
Mammary glands that produce milk

Question 15

characteristics of reptiles

Answer 15

Thick, dry, scaly skin
4 legs
Fertilise internally, conception from eggs
Soft eggs

Question 16

characteristics of fish

Answer 16

Wet scales [live in water]
Streamlined body shape
Fertilise externally, (they lay eggs) soft eggs
Breath using gills

Question 17

characteristics of amphibians

Answer 17

Smooth and moist skin
Lay eggs (soft) and fertilise externally
Use gills and lungs to breath, therefore being able to survive both in water and on land
4 legs

Question 18

characteristics of birds

Answer 18

Feathers= body and scales= legs
Constant body temperature, internally
Hard eggs
Fertilize internally, but give birth through eggs

Question 19

dicotyledons

Answer 19

plants with 2 cotyledons in their seeds

Question 20

monocotyledons

Answer 20

plants with only one cotyledons in their seeds

Question 21

classification of plants

Answer 21

ferns
flowering plants

Question 22

ferns

Answer 22

1. don’t produce flowers or seeds
2. have roots, stems and feathery leaves
3. reproduce through spores

Question 23

flowering plants

Answer 23

1. have roots, stems and leaves
2. reproduce sexually through flowers and seeds
3. the seeds are produced in the ovary of the flower

Question 24

monocotyledons 2

Answer 24

1. One-seed leaf/cotyledon
2. Parallel veins
3. Long narrow leaf
4. 3 flower parts
5. Scattered vascular bundles

Question 25

dicotyledons 2

Answer 25

1. Two-seed leaf
2. Branching veins
3. Broad leaves
4. 4/5 flower parts
5. Ringed vascular bundles