2.1 - Classification and biodiversity

Question 1

What is biodiversity?

Answer 1

is the total number and variety of species in a given area

Question 2

What are the five Kingdoms?

Answer 2

Animal
Plant
Fungi
Single-celled organisms (Protoctists)
Bacteria

Question 3

What can the Animal Kingdom be further split into?

Answer 3

Vertebrates - animals with backbone

Invertebrates - animals without backbone

Question 4

What can the Plant Kingdom be further split into?

Answer 4

flowering plants - produce flowers for reproduction (sunflower)
Non-flowering plants - reproduce using spores (moss)

Question 5

What is the order of the classification of species?

Answer 5

Kingdom
Phylum
Class
Order
Family
Genus
Species

Question 6

What 2 classification’s does the binominal system use to name a species? Why?

Answer 6

Genus, species (Panthera “tigris”) (Capital P) (tigris in italics lower case t)
To avoid confusion of names of species between languages

Question 7

What are morphological adaptions?

Answer 7

A structural change which gives an organism a greater chance of survival in its habitat.

Question 8

What are Behavioral adaptations?

Answer 8

Is the way an organism reacts to its environment which aids its survival

Question 9

Why is it impractical to count all the organism in a population?

Answer 9

Animals may move into or out of area during counting.
Some may die during time counting.
May be difficult to find all animals during counting.

Question 10

What is equation for estimating population size of organism (grass)

Answer 10

total grass plants found in sample X total area (m^2) / total area sampled (m^2)

Question 11

Why is biodiversity important for humans?

Answer 11

Source of food
Source of industrial materials
Potential for new medicines

Question 12

Population numbers of organisms are constantly fluctuating? Why?

Answer 12

Competition for resources
Predation
Disease
Pollution

Question 13

What are alien species?

Answer 13

Species that are not native to a particular region or country

Question 14

What are invasive species?

Answer 14

Species whose numbers grow faster than the native species and upset the ecological balance

Question 15

What is a capture/recapture technique?

Answer 15

1) capture sample of animals in the area
2) count, mark harmlessly then release animal
3) traps used few days later to recapture a sample of animals
4) numbers of marked and unmarked animals caught are recorded

Question 16

What is the equation for estimating the population of species (insects) in a particular habitat?

Answer 16

Number found in 1st sample X Number found in 2nd sample / Number found in second sample already marked

Question 17

What you must assume from the results of the capture/ recapture technique to be deemed accurate?

Answer 17

There was no immigration or emigration

The marking put on the organism neither harmed the organism or made it easier to be seen by predators