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WorksheetsLife Processes
Total questions: 60
Worksheet time: 3600secs
Raw materials used in the autotrophic mode of nutrition is:
Glucose, Starch, Fructose
Protein, Fats
Carbon dioxide, water
Hydrogen, Oxygen
Photosynthesis is:
Trapping energy of sunlight to form glucose.
Synthesis of photosensitive compounds.
Oxidation of glucose
Oxidation of carbon dioxide
Chlorophyll is mainly located in which part of the plant
Green leaf
Bark
Stem
Root
Chlorophyll has a porphyrin ring with _ _ _ _ _ at the centre.
Iron (Fe)
Chromium (Cr)
Magnesium (Mg)
Carbon (C)
Chlorophyll pigment is located in which organelle of a cell?
Mitochondria
Vacuole
Plastid
Chloroplast
Apart from the plant which microorganism also do photosynthesis:
Algae and cyanobacteria
Fungi
Paramecium
Amoeba
Heterotrophic nutrition is
The utilization of energy obtained by the plants.
Breakdown of Glucose into energy
Oxidation of Glucose
All
Digestion of food in amoeba occurs in
Nucleus
Cytoplasm
Food vacuole
None
Which of the following statements about the autotrophs is incorrect?
They synthesise carbohydrates from carbon dioxide and water in the presence of sunlight and chlorophyll
They store carbohydrates in the form of starch
They convert carbon dioxide and water into carbohydrates in the absence of sunlight
They constitute the first trophic level in food chains
Select the correct statement
Heterotrophs do not synthesise their own food
Heterotrophs utilise solar energy for photosynthesis
Heterotrophs synthesise their own food
Heterotrophs are capable of converting carbon dioxide and water into carbohydrates
The valve present between right atrium and right ventricle.
tricuspid
bicuspid
pulmonary
aortic
In CAM plants CO2 is stored in the form of _________ in the vacuoles.
lactic acid
malic acid
palmitic acid
linoleic acid
It is the site of gaseous exchange in human lungs.
villi
alveoli
trachea
larynx
In unicellular organisms like amoeba gaseous exchange takes place through the process of ____________.
osmosis
transportation
diffusion
elimination
The substance in plants and animals that act as an energy currency.
DNA
RNA
ADP
ATP
_______________ is the final product of glycolysis.
carbon dioxide
ATP
Pyruvic acid
acetyl coA
Glycolysis takes place in the __________ of the cell.
mitochondria
ribosomes
cytoplasm
Golgi complex
The continuous contractions and relaxations of the digestive organs is called
peristalsis
photosynthesis
expansion
constriction
_________________ artery carries deoxygenated blood.
aortic
pulmonary
renal
inferior
chloroplasts are present in the ___________ of the leaf.
palisade parenchyma
aerenchyma
sclrenchyma
collenchyma
_________________ artery carries deoxygenated blood.
aortic
pulmonary
renal
inferior
Glycolysis takes place in the __________ of the cell.
mitochondria
ribosomes
cytoplasm
Golgi complex
_______________ is the final product of glycolysis.
carbon dioxide
ATP
Pyruvic acid
acetyl coA
The substance in plants and animals that act as an energy currency.
DNA
RNA
ADP
ATP
In unicellular organisms like amoeba gaseous exchange takes place through the process of ____________.
osmosis
transportation
diffusion
elimination
It is the site of gaseous exchange in human lungs.
villi
alveoli
trachea
larynx
The valve present between right atrium and right ventricle.
tricuspid
bicuspid
pulmonary
aortic
Lymph does not comprise of
Red Blood Corpuscles
Lymphocytes
Leucocytes
Nitrogenous Waste
Crocodiles have ______ chambered heart.
two
three
four
none of these
An enzyme 'X' that converts starch to simple sugars is also the first enzyme to mix with food in the digestive tract. Identify 'X'
Pepsin
Amylase
Lipase
None of these
Which among of the following substances are reabsorbed in the nephron?
Urea, Uric acid, Amino acid
Glucose, Amino acids, Salts
Glucose, Urea, Creatinine
KCl, Urea, Glucose
How is food transported to the food vacuole of paramecium?
By movement of cilia
By pseudopodia
Food vacuole directly captures the food
By contractile vacuole
The process of obtaining food to meet the energy demands of the body is known as _____.
Excretion
Respiration
Nutrition
Circulation
The process that involves oxidation of food to release energy is known as _____
Breathing
Excretion
Circulation
respiration
What happens to the unused carbohydrates produced in the plant body?
Gets broken down and dissipated as heat.
Transported to stem in the form of glycogen.
Expelled from plant body through excretion.
Stored in the form of starch for future use.
Name the tissue responsible for the transportation of sugar and amino acids in plants.
Xylem
Stomata
root hairs
Phloem
Identify the structure.
Nephron
Alveolar sac
Alimentary canal
None of these
A: The length of the small intestine in cows is longer than in tigers.
R: Cellulose digestion takes lesser time than the digestion of flesh.
Both A and R are true and R is the correct explanation of the A.
Both A and R are true but R is not the correct explanation of the A.
A is true but R is false.
A is false but R is true.
A: Walls of the intestine have numerous villi.
R: These villi increase the surface area of digestion.
Both A and R are true but R is the correct explanation of the A.
Both A and R are true but R is not the correct explanation of the A.
A is true but R is false.
A is false but R is true.
A: When air is passed through lime water, it turns milky.
R: air contains 78% nitrogen and 21% oxygen.
Both A and R are true and R is the correct explanation of the A.
Both A and R are true and R is not the correct explanation of the A.
A is true but R is false.
A is false but R is true.
The largest artery in the human body is _________________
pulmonary artery
venacava
capillaries
aorta
Pericardium is the protective membrane outside the _________
Heart
Kidney
Lungs
Stomach
The blood vessels that carry blood back to the heart is ___________
artery
vein
capillary
platelets
Guard cells are usually ___________________
rectangular in shape
pear-shaped
spherical
kidney shaped
Excess glucose is stored in the form of glycogen in the _____________
pancreas
gall bladder
blood
liver
- Amoeba captures its food with the help of _________
tentacles
claws
cillia
pseudopodia
Kind of nutrition in which the organisms feed on dead and decaying organic matter is ____________
Holozoic
saprophytic
parasitic
autotrophic
Villi present on the internal wall of intestine help in
the
emulsification of fats
breakdown of proteins
absorption of digested food
digestion of carbohydrates
During vigorous physical exercise, lactic acid is formed
from glucose inside the muscle cells because
there is lack of oxygen
there is lack of water
there is excess of carbon dioxide
none of the above
Which chambers of human heart contain oxygenated
blood?
Left atrium and left ventricle
Left atrium and right ventricle
Right atrium and left ventricle
Right atrium and right ventricle
The breakdown of pyruvate to give carbon-di-oxide,
water and energy takes place in:
cytoplasm
mitochondria
chloroplast
nucleus
The process of transpiration in plants helps in:
Opening of stomata
Absorption of CO2 from atmosphere
Upward conduction of water and minerals
Absorption of O2 from atmosphere
Instrument used to measure blood pressure is
barometer
thermometer
anemometer
sphygmomanometer
The digestive juice produced by stomach contains
Hydrochloric acid
Pepsin
Mucus
Trypsin
Strongest muscle in our body is
(a)
Teeth are covered with a thin coating of
Dentine
Crown
Enamel
Cementum
What is the full form of ATP?
(a)
When do plants do most of their respiration?
Daytime
Nighttime
Diagram shows a model of human respiratory system. K represents....
lung
rib cage
diaphragm
thoracic cavity
Epiglottis is the structure that opens or closes the trachea.
TRUE
FALSE
