Biology unit 1

Question 1

What to consider a living thing

Answer 1

1.Made up of cells
2.Contains DNA
3.7 Life characteristics

Question 2

Why do animals move?

Answer 2

To find food, water, shelter, to hide from
predators and to reproduce.

Question 3

Why do plants move?

Answer 3

Plants move towards
sunlight which they need to
make food.

Roots will move
towards water and
gravity.

Some flowers close during
the night.

Question 4

Movement

Answer 4

The ability of organism to change its position or place where the whole organism or a part of the organism.

Question 5

Respiration

Answer 5

Respiration is a chemical process in which the cells of an organism break
down nutrient molecules( like glucose) to obtain energy.

Question 6

Glucose + Oxygen

Answer 6

→ ENERGY + Carbon dioxide + Water

Question 7

Sensitivity

Answer 7

the ability of living organisms to detect and
respond to stimulus/stimuli.

Question 8

STIMULUS/STIMULI

Answer 8

Changes in the surroundings.

Question 9

GROWTH

Answer 9

A permenant increase in the cell size or drymass

Question 10

Drymass

Answer 10

Mass of an organism after the water content has been removed

Question 11

REPRODUCTION

Answer 11

Reproduction is the making
of new organisms of their own kind.

Question 12

EXCRETION

Answer 12

Excretion is the process of removal of waste products of metabolism ,
substances in excess & toxic materials from an organisms body that
would otherwise cause it harm.

Question 13

Metabolism

Answer 13

All chemical reactions that happen in body.

Question 14

NUTRITION

Answer 14

Nutrition is the obtaining of food for energy & to keep an
organism healthy.

Question 15

Classification

Answer 15

Sorting organisms into smaller groups.

Question 16

Why is classification important?

Answer 16

To identify and study living organisms and to communicate with scientists from other countries or regions.

Question 17

How are organisms classified?

Answer 17

Based on homology and analogy

Question 18

Homology

Answer 18

Same structure different function

Question 19

Analogy

Answer 19

Same function differnt structure

Question 20

Species

Answer 20

similar looking organisms that are capable of
breeding and producing fertile offsprings.

Question 21

Heirarchy of classification

Answer 21

KINGDOM——>PHYLUM——>CLASS—–>ORDER——>FAMILY—->GENUS—->SPECIES

Question 22

On what are organisms classified based on?

Answer 22

Morphology and Anatomy

Question 23

Anatomy

Answer 23

Arrangment of internal structure

Question 24

Morphology

Answer 24

Physical apperances

Question 25

Dichotomous Key

Answer 25

constructed using contrasting characteristics to divide the organisms in the key into smaller and smaller groups; each time a choice is made, a number of organisms are eliminated.

Question 26

Binomial system

Answer 26

Each organism has two names.First one is genus name.Second is species.

Question 27

Domains are:

Answer 27

EUKARYOTES AND PROKARYOTES

Question 28

EUKARUTES as

Answer 28

1.Kingdom protoctista (amoeba) 2.Kingdom fungi 3.Kingdom plants 4.Animal kingdom

Question 29

PROKARYOTES as

Answer 29

Monera (bacteria)

Question 30

What are the arthopods classes in animal kingdom?

Answer 30

1.Insects 2.Crustaceans 3.Archnids 4.Myriapods

Question 31

Give the four charecterstics of arthopods.

Answer 31

1.All have an exoskeleton 2.All have jointed appendages 3.Bilateral Symmetry 4.All have body that is divided into segments.

Question 32

Exoskeleton

Answer 32

Made up of chitin and protein.Its hard external skeleton. Protects from damage

Question 33

Bilateral symmetry

Answer 33

Body can be divided into two identical halves.

Question 34

E.x of class insect

Answer 34

Ants, bees,mosquitoes

Question 35

E x of class crustaceans

Answer 35

Crabs lobster,shrimps

Question 36

Ex of class arachnids

Answer 36

Spiders, mites, scorpion

Question 37

Ex of myriapods

Answer 37

Centipede, millipedes

Question 38

Give features of class insects

Answer 38

1.3 body segments 2 three pairs of legs 3. Two pairs of wings 4. One pair of antennas 5. One pair of compound eyes

Question 39

Features of class crustaceans.

Answer 39

3 body segments 2. Move than four pairs of jointed legs, less than 20 pairs. Two pairs of antennas. Chalky exoskeleton.one pair of compound eyes. They have pincers and claws.

Question 40

Features of arachnids.

Answer 40

1. 2 body segments.2.4 pairs of jointed legs 3.several simple eyes 4 feeding appendages

Question 41

Features of myriapods

Answer 41

1elonged bodies with many segments 2.one pair of antennae 3. Simple eyes 4. Most of themhas either one pair or two pairs of jointed legs for each segment.

Question 42

What's a vertebrate?

Answer 42

Are animals withvertebale column or a backbone

Question 43

What are the main classes of vertebrates

Answer 43

Mammals 2. Fish 3.amphibians 4.reptiles 5.birds

Question 44

Features of vertebrate

Answer 44

1. They all have a backbone 2. They all have an internal steleton made up of bones or cartilages.3- have a tail that starts behind the anus 4. Either endotherm or ectotherms 5. Either 2,3,4 chambered heart 6. They either have single or double circulation.