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Biology 2nd Year CH # 15 to 17

Total questions: 140

Worksheet time: 2hrs 34mins

Name
Class
Date
1.

When you are hot, your body sweats to cool you down. This means your temperature went above normal and your body sweats to counteract that change to bring you back to normal. What kind of feedback loop would this be?

a)

Negative Feedback Loop

b)

Positive Feedback Loop

c)

Neutral Feedback Loop

d)

Linear Feedback Loop

2.

The 4 parts of the communication pathway to maintain homeostasis listed in order are:

a)

target, sensors, control center, communication system

b)

communication system, sensors, target, control center

c)

sensors, control center, communication system, target

d)

target, control center, sensors, communication system

3.

These detect changes in the environment

a)

Control Center

b)

Sensors

c)

Communication System

d)

Target

4.

This takes the messages from the sensors and is known as the control center

a)

Brain

b)

Kidney

c)

Liver

d)

Heart

5.

Osmoregulation means....

a)

maintain water levels

b)

maintain temperature

c)

maintain heart rate

d)

maintain breathing

6.

When you are hot you....

a)

sweat

b)

shiver

c)

get goosebumps

d)

hairs stand up on arm

7.

When you are cold you...

a)

shiver to create heat

b)

sweat

c)

blood vessels dilate

d)

increase heart rate

8.

Negative Feedback loops are...

a)

Purposeful pushes above normal set values.

b)

Counteract a change to bring it back to normal set values

c)

Are rare

d)

Help with childbirth

9.

Maintaining internal stable conditions is the definition of...

a)

Hypertonic

b)

Hypotonic

c)

Homeostasis

d)

Heterotroph

10.
If the environment gets cold, we will often shiver in order to:
a)
keep body temperature the same as the external temperature
b)
decrease body temperature
c)
increase body temperature
d)
regulate blood pressure
11.
What is another word that can be used to describe "homeostasis"?
a)
STABLE
b)
EQUAL
c)
COMPLETE
d)
CORRECT
12.

Which of the following is not regulated by homeostasis?

a)

body temperature

b)

blood sugar

c)

blood pH

d)

body movements

13.

Salt concentration is higher in the body then external environment which condition is this.......

a)

Hypotonic

b)

Hypertonic

c)

Isotonic

d)

Supersaturated

14.

Brassica plants are..................

a)

Hydrophytes

b)

Mesophytes

c)

Xerophytes

d)

None of these

15.

The animals whose body luid concentrations difer noticeably the outside environment actively regulate to discharge excess water in hypotonic and excrete salts in hypertonic conditions therefore, are called as ........

a)

Regulators

b)

Osmoconformers

c)

Osmoregulators

d)

All of these

16.

Urea in high concentration is damaging so these ishes retain another

chemical .......................... for protection against urea.

a)

trimethylamine oxide

b)

creatinine

c)

xanthine

d)

hypoxanthine

17.

Among the assimilated nutrients in animals, carbohydrates and lipids are metabolized to ................................

a)

Amino acid & Fatty acids

b)

Glucose

c)

CO2 and H20

d)

Fats

18.

Some trees deposit strange chemicals in their branches and trunks, especially in old xylem which is no longer used for water transport. This takes place in .......................................which produces very black wood in the center.

a)

Heart wood

b)

Sap wood

c)

Ebony

d)

Annual rings

19.

Metabolism of purine and pyrimidine bases produces signiicant amount of ......................

a)

Ammonia

b)

Hypoanthine

c)

Urea

d)

All of these

20.

In urea cycle .................................. is immediate predecessor of urea.

a)

Ornithine

b)

citrulline

c)

Arginine

d)

Arginosuccinate

21.

When water TRANSPIRES from the stoma into the atmosphere, what phase is it in

a)

Solid

b)

Liquid

c)

Gas

22.

Which of the following helps to reduce the lose of water from a plant?

a)

the arrangement of palisade mesophyll cells

b)

the presence of xylem

c)

the waxy layer of cuticle

d)

the arrangement of spongy mesophyll cells

23.
Which organ system removes cellular wastes as the result of cellular respiration?
a)
nervous
b)
digestive
c)
excretory
d)
circulatory
24.
what do the lungs do in the excretory system
a)
dispose of carbon dioxide through exhalation
b)
disposes of smog thru exhalation
c)
dispose of ultraviolet rays through exhalation
d)
dispose of rays through exhalation
25.

Which part of nephron allows the selective re-absorption of useful substances like glucose, amino acids, salts and water into the blood cappilaries?

a)

Tubule

b)

Glomerulus

c)

Bowman's capsule

d)

Ureter

26.

The procedure used for cleaning the blood of a person by separating urea from it is called:

a)

Osmosis

b)

Filteration

c)

Dialysis

d)

Double circulation

27.

Identify the correct path of urine in the human body.

a)

Kidney - urinary bladder - urethra - ureter.

b)

Urinary bladder - ureter - kidney - urethra.

c)

Kidney - ureter - urethra - urinary bladder.

d)

Kidney - ureter - urinary bladder - urethra.

28.

The filtration units of kidneys are called:

a)

Ureter

b)

Urethta

c)

Neurons

d)

Nephrons

29.

Bowman's Capsule is located in:

a)

Cortex

b)

Henle's Loop

c)

Bladder

d)

None

30.

The ______ synthesizes most of the excretory compound in humans and is eliminated through ______

a)

Liver, Urine

b)

Kidneys, Urine

c)

Liver, Bile Juice

d)

Lungs, CO2

31.

The ______ is a network of tiny blood vessels located at the beginning of a nephron.

a)

Renal Vein

b)

Tubular part

c)

Glomerulus

d)

Loop of Henle

32.

These organs are responsible for what?

a)

storing urine

b)

storing water

c)

filtering blood

d)

they don't have a particular job

33.

Where does selective re-absorption of glucose happen in the nephron ?

a)

In the proximal (first) convoluted tubule

b)

In the distal (second) convoluted tubule

c)

In the collecting duct

34.

What happens if the blood plasma is too concentrated?

a)

Less ADH is released, causing more water to be reabsorbed in the nephrons

b)

More ADH is released, causing less water to be reabsorbed in the nephrons

c)

More ADH is released, causing more water to be reabsorbed in the nephrons

35.

What does urine contain?

a)

Water and urea only

b)

Water and salts only

c)

Water, urea and salts

36.

What does the filtrate in the Bowman's capsule contain?

a)

Water, ions, urea and proteins

b)

Water, ions, urea and glucose

c)

Water, urea, ions and red blood cells

37.

Which blood vessels supply the kidneys?

a)

The hepatic arteries

b)

The renal arteries

c)

The pulmonary arteries

38.

The cluster of capillaries within a nephron.

a)

glomerulus

b)

alveoli

c)

aorta

d)

vein

39.

The organ that removes metabolic wastes including urea, excess water, and salts from the blood.

a)

lung

b)

liver

c)

kidney

d)

colon

40.

The organ whose excretory functions include detoxification of the blood and formation of urea.

a)

liver

b)

kidney

c)

heart

d)

gall bladder

41.

The waste products produced by cellular life processes the most important of which are carbon dioxide, water, urea and mineral salts.

a)

ATP

b)

metabolic wastes

c)

feces

d)

enzymes

42.

Another term for sweating; removal of water, salt and urea through the sweat glands in the skin.

a)

perspiration

b)

respiration

c)

reabsorption

d)

transport

43.
Which excretory organ eliminates water and some chemical wastes in perspiration?
a)
lungs
b)
skin
c)
liver
d)
kidneys
44.
A short tube where urine is released from the body is the _______.
a)
Ureter
b)
Kidney
c)
Bladder
d)
Urethra
45.
Place the following events in sequence:
A)  Urine passes through the ureters
B)  Urea enters the kidneys
C)  Urine enters the urethra
a)
B, A, C
b)
C, B, A
c)
B, C, A
d)
A, C, B
46.

Term for both the bunch of capillaries and the cup-shaped structure which forms part of the nephron

a)

Bowman's capsule

b)

Glomerulus

c)

Malpighian body

d)

Urethra

47.

The area where all of the glucose is absorbed.

a)

Loop of Henle

b)

Proximal convoluted tubule

c)

Distal convoluted tubule

d)

Collecting tubule

48.

The area where the pH of the blood is controlled.

a)

Loop of Henle

b)

Proximal convoluted tubule

c)

Distal convoluted tubule

d)

Collecting tubule

49.

The area influenced by hormones in order to regulate water balance in the body.

a)

Loop of Henle

b)

Proximal convoluted tubule

c)

Distal convoluted tubule

d)

Collecting tubule

50.

The area where a sodium pump is found.

a)

Loop of Henle

b)

Proximal convoluted tubule

c)

Distal convoluted tubule

d)

Collecting tubule

51.

The "salty" region of the kidney.

a)

Cortex

b)

Medulla

c)

Renal pelvis

d)

Hilum

52.

"Filtrate" is the name given to the fluid in the ...

a)

Capillaries

b)

Nephron

c)

Bladder

53.
Sweating to regulate body temperature is an example of
a)
negative feedback
b)
positive feedback
c)
a homeostatic imbalance
d)
aging
54.

The membrane that bounds vacuole, is called ................................... which contains a number of active transport systems that pump ions into the vacuole

a)

Plasmalemma

b)

Vacoular membrane

c)

Phragmoplast

d)

Tonoplast

55.

.................................are shorter than ibers and are found in seed coats and nut shells and provide protection.

a)

Trachieds

b)

Tracheae

c)

Fibers

d)

Sclereides

56.

The commercial cork is also made from the bark of trees such as.................

a)

Cedrus deodara

b)

Pinus rouxburgii

c)

Quercus suber

d)

None of these

57.

The best example of positive tactic movement is the passive movement of chloroplast due to cyclosis. This movement helps the chloroplast to absorb maximum light for ............................

a)

Photolysis of water

b)

Light absorption

c)

C02 fixation

d)

All of these

58.

The nyctinastic movements are shown by the organs in response to external stimuli leading to.....................

a)

opening of bud

b)

closure of bud

c)

diferential growth

d)

nutrient movement

59.

Exoskeleton is secreted by the ........................ in animal cells.

a)

Skin

b)

endoderm

c)

mesoderm

d)

ectoderm

60.

Spongy bone is light, rich in blood vessels, and highly ....................

a)

vascularized

b)

soft

c)

dense

d)

porous

61.

Which part of your skeleton protects the brain?

a)

Ribs

b)

Backbone

c)

Skull

d)

Head

62.

How many bones are there in an adult human body?

a)

106

b)

406

c)

260

d)

206

63.

What mineral are bones made of?

a)

Vitamin C

b)

Calcium

c)

Zinc

d)

Vitamin B

64.

What is the biggest bone in your body called?

a)

Femur

b)

Sternum

c)

Phalanges

d)

Vertebrae

65.

Where are your tibia and fibula found?

a)

Back

b)

Arm

c)

Leg

d)

Wrist

66.

What are the three main functions of your skeleton?

a)

Movement, Protection and Balance

b)

Movement, Protection and Support

c)

Protection, Coordination and Balance

d)

Movement, Balance and Running

67.

What is another name for your knee bone?

a)

Zoella

b)

Nutella

c)

Patella

d)

Cranium

68.

Diagram below shows a human lumbar vertebrae. what is the function of Z?

a)

Protect the spinal cord

b)

Articulate with the skull

c)

Attachment sites for muscle and ligaments

d)

Bear the weight of the lower back of the body

69.

Diagram below shows a human skeleton. Which bones, A, B, C or D forms a part of the axial skeleton?

a)

A

b)

B

c)

C

d)

D

70.

Which of the following is not appendicular skeleton?

a)

lower limbs

b)

pelvic girdle

c)

pectoral girdle

d)

vertebral column

71.

A hard outer covering is called a(n) ________

a)

endoskeleton

b)

exoskeleton

c)

hydrostatic skeleton

72.

Most endoskeletons are made of

a)

cartilage

b)

fluid

c)

bone

73.

Choose two organisms that are supported by hydrostatic skeleton.

a)

Fish

b)

Leech

c)

Grasshopper

d)

Star fish

74.

Exoskeleton means

a)

Skeleton inside our body

b)

Skeleton outside our body

c)

Fluid fill in the body

d)

No skeleton

75.

Skeletal muscle can be found at..

a)

Lung

b)

Heart

c)

Skeleton

d)

Blood Vessels

76.

Synovial fluid acts as a ......................... which reduces friction between the ends of the bones.

a)

lubricant

b)

fuel

c)

medium

77.

Elastic, flexible and strong connective tissue that joints two bones.

a)

Tendon

b)

Ligament

c)

Cartilage

78.
Which of the following is an example of a hinge joint?
a)
shoulders 
b)
neck 
c)
knee 
d)
eyes 
79.
________ contracts and relaxes to produce movement.
a)
bones 
b)
tendons 
c)
muscles 
d)
toes 
80.

The spine is made up of 26 _____________________.

a)

vertebrae

b)

ribs

c)

muscles

d)

nerves

81.

A(n) _______ is a fluid-filled cavity that is surrounded by muscle tissue

a)

hydrostatic skeleton

b)

endoskeleton

c)

exoskeleton

82.
Name the bone located at number 14.
a)
Femur
b)
Fibula
c)
Tibia
d)
Radius
83.

Myonemes are found in..........................

a)

Euglena

b)

Paramecium

c)

Earthworm

d)

Cockroach

84.

Deer and goat are...............................

a)

Plantigrade

b)

Digitigrade

c)

Unuligrade

d)

All of these

85.

A nerve cell is also known as a

answer choices

a)

cerebrum

b)

neuron

c)

cerebellum

d)

nucleus

86.

The gaps between neurons are called

answer choices

a)

Effectors

b)

neurotransmitters

c)

reflexes

d)

synapses

87.

Identify the part of the brain that takes up the greatest volume

answer choices

a)

BRAIN STEM

b)

CEREBELLUM

c)

PONS

d)

CEREBRUM

88.

Which part of the nervous system is not involved in producing reflex actions?

answer choices

a)

brain

b)

spinal cord

c)

receptor

d)

sensory

89.

What is function of medulla?

answer choices

a)

controls heart RATE

b)

memory

c)

controls balance

d)

conscious thought

90.

The neurons that conduct information towards the CNS are _________.

answer choices

a)

interneurons

b)

motor neurons

c)

sensory neurons

d)

efferent neurons

91.

Which of the following is part of the peripheral nervous system?

answer choices

a)

BRAIN

b)

SPINAL CHORD

c)

HEART MUSCLE

d)

TASTE BUDS ON TONGUE

92.

which endocrine gland is called the master gland

answer choices

a)

pituitary

b)

pineal

c)

adrenals

d)

thyroid

93.

Identify the name of the white insulating substance that often covers the axon of a neuron and helps speed up the conduction of the message

answer choices

a)

MYELIN

b)

NEUROTRANSMITTER

c)

SYNAPSE

d)

VESICLE

94.

Which hormone is known as the ‘fight or flight’ hormone?

answer choices

a)

GROWTH HORMONE

b)

ADRENALINE

c)

OESTROGEN

d)

ANTIDURETIC HORMONE

95.

The nerve cells in your body are called neurons. From which part of the neuron is most likely responsible for carrying signals between the cell body and axon terminal?

answer choices

a)

soma

b)

axon

c)

Node of Ranvier

d)

Schwann cell

96.

Thinking part of brain is

a)

Hind brain

b)

Mid brain

c)

Fore brain

d)

Hypothalamus

97.

Part of the brain responsible for hearing is

a)

Cerebrum

b)

Cerebellum

c)

Hypothalamus

d)

Medulla

98.
The system of the body that carries information to all parts of the body.
a)
Nervous system
b)
Spinal Cord
c)
Neuron
d)
Brain
99.
What is the part highlighted in red?
a)
Cerebrum
b)
Cerebellum
c)
Brain Stem
d)
Diencephalon
100.

In a neuron, conversion of electrical signal to chemical signal occurs at

a)

Axonal end

b)

Dendritic end

c)

Cell body

d)

Axon

101.

Correct sequence of electrical impulse transmission in a neuron is from

a)

dendrite, axon, axonal end,cell body

b)

cell body, dendrite, axon,axonal end

c)

dendrite, cell body, axon, axonal end

d)

axonal end, axon, cell body, dendrite

102.

Which is the correct sequence of the components of a reflex arc

a)

Receptors, spinal cord,sensory neuron, motor neuron, muscle

b)

Receptors, muscle, sensory neuron, motor neuron, spinal cord

c)

Receptors, sensory neuron, spinal cord, motor neuron, muscle

d)

Receptors, motor neuron, spinal cord, sensory neuron, muscle

103.

Which is not a reflex action

a)

Swallowing

b)

Coughing

c)

Knee jerk

d)

Closing of eyes on flashing light

104.

Spinal cord originates from

a)

Cerebrum

b)

Medulla

c)

Cerebellum

d)

Pons

105.

Part of the brain that controls respiration, heart beat and peristalsis is

a)

Cerebrum

b)

Cerebellum

c)

Hypothalamus

d)

Medulla

106.

Most highly developed part of human brain is

a)

Pons

b)

Medulla

c)

Cerebrum

d)

Cerebellum

107.

Centre for regulating body temperature is

a)

Pons

b)

Cerebellum

c)

Medulla

d)

Hypothalamus

108.

In human, the number of cranial nerves is

a)

12

b)

31

c)

24

d)

26

109.

In humans, the number of spinal nerves is

a)

12 pairs

b)

31 pairs

c)

33 pairs

d)

11 pairs

110.

Taste receptors are

a)

Phonoreceptors

b)

Statoreceptors

c)

Olfactory receptors

d)

Gustatory receptors

111.

Which of the following is an example of autonomous nervous system

a)

Knee jerk reflex

b)

Swallowing of food

c)

Peristalsis

d)

Reflex action

112.

Smooth muscles, cardiac muscle and organs are regulated by

a)

Central nervous system

b)

Autonomous nervous system

c)

Peripheral nervous system

d)

Somatic nervous system

113.

The thalamus and hypothalamus are located in the

a)

cerebrum

b)

cerebellum

c)

diencephalon

d)

medulla oblongata

114.

What is an circadian rhythm?

a)

Biological rhythm which lasts around 24 hrs

b)

Biological rhythm which is under 24 hrs

c)

Biological rhythm which lasts longer than 24 hrs

115.

What is the definition of a biological rhythm?

a)

When you play the drums while thinking about science

b)

Distinct patterns of changes in body activity that conform to cyclical time periods

c)

The sleep/wake cycle

d)

An internal response to a change in your environment

116.
The sleep wake cycle is an example of?
a)
Circadian Rhythm
b)
Exogenous Zeitgeber
c)
Ultradian Rhythm 
d)
Infradian Rhythm 
117.

a diurnal animal is ..

a)

active during hours of darkness

b)

Active during hours of light

c)

no pattern to activity

d)

active during dawn and dusk

118.

the period of a tidal rhythm is

a)

24 hours

b)

15 days

c)

12.4 hours

d)

28 days

119.

Auxins are responsible for _____________ of a plant

a)

Colour change

b)

Watering

c)

Phototropism

d)

Growth

120.

What happens when you place an over ripe banana in a fruit bowl with other fruit?

a)

Nothing will happen

b)

The other fruit will grow in size

c)

Ethylene gas will cause the fruit to grow mold

d)

Ethylene gas will cause the other fruit to ripen

121.

which plant hormone produces opposite effects?

a)

dormancy and cotyledons

b)

dormancy and germination

c)

auxin and cytokins

d)

auxins and ethylene

122.
Which plant hormone is a gas?
a)
auxin
b)
gibberellin
c)
ethene
d)
cytokinin
123.

Which of the following are plant hormones

a)

Auxin

b)

Cytokinin

c)

Gibberellin

d)

Abcissic acid, ethylene

e)

All

124.
Which hormone promotes seed germination?
a)
abscisic acid
b)
ethylene
c)
gibberellin
d)
auxin
125.
Helps fruit ripen
a)
Auxin
b)
Gibberellin
c)
Cytokinins
d)
Ethene
126.

The figure above shows a mimosa plant. What is the conclusion that can be derived based on the reaction in the figure.

a)

The mimosa plant shows a seismonastic reaction.

b)

The leaf of the mimosa becomes sturgid when touched.

c)

The osmotic pressure in the mimosa cell increases when touched.

d)

The temperature of the glass rod becomes very high until the leaf fades when touched.

127.

Stimulates cell division

a)

abscisic acid

b)

auxin

c)

cytokinins

d)

gibberellin

e)

ethylene

128.

Inhibits cell division

a)

abscisic acid

b)

auxin

c)

cytokinins

d)

gibberellin

e)

ethylene

129.

When Pakistan become member of CENTO?

a)

1947

b)

1955

c)

1989

d)

1991

130.

Ringitt is the currency of............

a)

Indonesia

b)

Malaysia

c)

Japan

d)

Sri lanka

131.

Capital of somalia is...................

a)

sydney

b)

malay

c)

Moroco

d)

mogadishu

132.

Write the meaning of strenous..............

a)

Hard

b)

Strong

c)

Healthy

d)

Weak

133.

Who translated israr e khudi in english.......................

a)

Prof weisemann

b)

Prof Alxender

c)

Prof Marsh

d)

Prof Nicholson

134.

Gazwa Tabook happened in..........................

a)

1 hijri

b)

2 hijri

c)

3 hijri

d)

4 hijri

135.

Ibne batuta came in india from....................

a)

Egypt

b)

Syria

c)

Moroco

d)

Jordan

136.

Head Quarter of asian development bank is in....................

a)

Moroco

b)

Baghdad

c)

Manila

d)

Mali

137.

Highest literacy rate among SAARC countries is of

a)

Pakistan

b)

India

c)

Srilanka

d)

Japan

138.

When Choudhary RehmatAli coined word pakistan in NOW OR NEVER pamphlet in...............

a)

1928

b)

1930

c)

1933

d)

1935

139.

Who supported pakistan resolution from sindh province by................

a)

Ch. Rehmat Ali

b)

Abdullah Haroon

c)

Allama Iqbal

d)

Gandhi

140.

National Anthem was Approved in.....................

a)

1948

b)

1950

c)

1952

d)

1954

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