Characteristics and Classification of Living Organisms Grade X

Question 1

cell

Answer 1

small microscopic things that make up all organisms.

the basic building blocks of all living things.

Question 2

prokaryotic

Answer 2

bacteria cells (simple, no nucleus)

Question 3

eukaryotic

Answer 3

animal cells plant cells

Question 4

DNA

Answer 4

long stringy structure in the nucleus of ur cell

Question 5

gene

Answer 5

long pieces of DNA

Question 6

stimulus

Answer 6

anything that causes a response in an organism

Question 7

homeostasis

Answer 7

remain the same on the inside no matter where u go or what u do

Question 8

reproduction

Answer 8

the processes that make more of the same kind of organism-new indiduals.

Question 9

g & development

Answer 9

the processes by which an organism changes in size and form

Question 10

growth (multicellular)

development

Answer 10

is the permanent change in size and dry mass and results from an increase of cell number or cell size or both.
development:cells become differentiated and can do different things

Question 11

stimuli/sensitivity/irritability

Answer 11

the ability to detect external and internal changes and to make appropriate responses.

Question 12

movement

Answer 12

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

Question 13

respiration

Answer 13

the chemical reaction that breaks down the nutrient molecules in the living cells to release energy for metabolism.

Question 14

excretion

Answer 14

the removal of toxic materials from organisms, waste products of metabolism.

Question 15

nutrition

Answer 15

the taking of materials for energy, growth and development.

Question 16

locomotion

Answer 16

that animals move from one place to another

Question 17

classification

Answer 17

the science of placing organisms into categories on the basis of their observable characteristics.

Question 18

taxonomy

Answer 18

the scientific study of how organisms are classified

Question 19

father of taxonomy

Answer 19

carl Linnaeus Swedish botanist zoologist binomial

Question 20

homologous

Answer 20

proteins diverged from a common ancestral gene

similar sequences structures and functions

Question 21

common ancestor

Answer 21

is the species that lived in the past and is thought to have given a rise to several different species alive today.
eg: all mammals share a common ancestor.

Question 22

dichotomous key

Answer 22

a way of identifying an organism by working thru pairs of statements that lead u to its name.

Question 23

binomial of a human

Answer 23

homo sapien

Question 24

binomial nomenclature

Answer 24

a system of naming species that is internationally agreed in which the scientific name is made up of two parts showing the genus and species

Question 25

five kingdoms

Answer 25

animalia, plantae, fungi, protista and monera

Question 26

study of fungi

Answer 26

mycology

Question 27

eats of decaying matter

Answer 27

saprophytes

Question 28

feed from other plants cant make own food

Answer 28

heterotrophs

Question 29

fertile

Answer 29

able to reproduce

Question 30

species

Answer 30

is a group of organisms that can reproduce to produce fertile offspring.

Question 31

genus

Answer 31

is a group of species that share similar features and a common ancestor.

Question 32

infertile

Answer 32

not able to reproduce

Question 33

flowering plants scientific name

Answer 33

angiosperms

Question 34

monocotyledon

Answer 34

are seeds tht grow into seedlings with only one seed leaf (cotyledon)

Question 35

dicotyledons

Answer 35

seeds have two seed leaves

Question 36

metamorphosis

Answer 36

changing from larva with one body form to an adult with a diff body form.

Question 37

metabolism

Answer 37

the chemical changes that take place in living organisms.

Question 38

kingdom

Answer 38

one of the major groups into which all organisms are classified.

Question 39

arthropods

Answer 39

an animal with jointed legs, but no backbone.

Question 40

mammary glands

Answer 40

organs found only in mammals, which produce milk to feed young.

Question 41

fungus

Answer 41

an organism whose cells have cell walls but that does not photosyntesise.

Question 42

exoskeleton

Answer 42

a supportive structure on the outside of the body