question_answer2)
Name the process in plants where water is lost as water
vapour.
question_answer3)
Which is the food constituent that bile helps to digest
and absorb?
question_answer5)
What are the final products after digestion of
carbohydrates and proteins?
question_answer6)
What is saliva? State its role in the digestion of food.
question_answer7)
Name the process by which autotrophs prepare their own food.
question_answer9)
What is the primary requirement for pancreatic enzymes to
act?
question_answer10)
What do you mean by emulsification of fat?
question_answer11)
State the difference between photosynthesis and
respiration.
question_answer13)
Why is energy required to develop root pressure?
question_answer14)
Which part of the bile juice is useful in digestion?
question_answer20)
What is the role of pancreatic enzymes in human body?
question_answer22)
Why does our mouth waters when we eat something?
question_answer24)
Complete the following blanks
The action of intestinal juice converts
question_answer25)
How would digestion of food be affected if the bile duct
is completely blocked?
question_answer26)
Explain the process the nutrition in Amoeba.
question_answer28)
How do guard cells regulate opening and closing of
stomatal pores?
question_answer29)
Name any two parasitic plants and two parasitic animals.
question_answer31)
Which is the largest digestive gland in human body? What
is its function?
question_answer34)
What is the significance of emulsification of fats?
question_answer36)
What is the difference between ingestion and egestion?
question_answer37)
Write a short note on the different types of heterotrophic
nutrition.
question_answer38)
What are the adaptations of leaf for photosynthesis?
question_answer39)
How is required pH maintained in the stomach and small
intestine?
question_answer42)
Draw a well labelled diagram of a palisade leaf.
question_answer43)
What are the functions of gastric glands present in the wall of the
stomach?
question_answer44)
Why does absorption of digested food occur mainly in the
small intestine?
question_answer53)
Describe holozoic nutrition in detail using one
example.
question_answer63)
State one similarity between lungs and gills.
question_answer65)
How do plants utilise the carbon dioxide produced during respiration?
question_answer66)
What is the haemoglobin? Where is it found?
question_answer67)
Why carbon dioxide is always transported in dissolved
form?
question_answer68)
Define breathing.
question_answer69)
What is the principle of exchange of gases?
question_answer71)
In which organelle of cell does respiration occur?
question_answer73)
Name the respiratory pigment in human beings.
question_answer74)
Write role of haemoglobin.
question_answer76)
Write the end product of anaerobic respiration in yeast
cells.
question_answer77)
Write the path travelled by a molecule of oxygen when it
enters the body.
question_answer81)
Plants have low energy needs as compared to animals.
Explain.
question_answer82)
What happens to the breathing rate during rigorous
exercise?
question_answer87)
State in brief the role of lungs in the exchange of
gases.
question_answer88)
State basic difference in the processes of respiration and
photosynthesis.
question_answer92)
What is the role of respiratory pigment in respiration?
Give one example.
question_answer95)
What are alveoli? Mention their role in respiration.
question_answer100)
Describe the process of respiration in human beings.
question_answer104)
Why is the walls of ventricles thicker than walls of atria?
question_answer105)
What is transported by lymph?
question_answer106)
What is transported by plasma ?
question_answer107)
What is the advantage of having four-chambered heart ?
question_answer108)
What will happen if platelets are absent in the blood ?
question_answer110)
Why do veins have thin walls as compared to arteries ?
question_answer111)
Which mineral control the heart?
question_answer112)
What is the other name of SA node ?
question_answer113)
Why SA node is called as the pacemaker of heart ?
question_answer114)
Oil. In which form, iron is present in haemoglobin ?
question_answer115)
How much blood is pumped to the brain in one minute?
question_answer117)
Write the functions of any two chambers of human heart.
question_answer118)
State the role and functions of
(a) Blood (b) WBC
question_answer119)
Write the functions of lymph in human transport
system.
question_answer120)
What does the blood consist of?
question_answer121)
Why are valves present in heart and veins?
question_answer123)
How can the sugar stored in root or stem tissue transported to buds in
spring?
question_answer124)
What is the role of transpiration pull in transportation ?
question_answer125)
From where does roots obtain water and minerals ?
question_answer126)
What is blood clotting ?
question_answer128)
Write two functions of blood in human beings
question_answer129)
Draw a labelled diagram of the pumping machine in human
beings.
question_answer131)
What are capillaries? State the function performed by them?
question_answer132)
How is the process of transpiration useful to plant?
question_answer134)
How are water and minerals absorbed by the plant ?
question_answer136)
During one cycle how many times blood goes to heart of fish and why?
question_answer137)
What would be the consequences of deficiency of
haemoglobin in our bodies?
question_answer138)
List the various components of blood. Also write their
function.
question_answer141)
What is the differences between artery, vein and capillary?
(1x3)
question_answer142)
What is translocation ? How it takes place in plants?
question_answer152)
List and describe in brief in tabular form any five functions of blood.
question_answer153)
Describe double circulation in human beings. Why is it
necessary?
question_answer155)
Which substance is selectively reabsorbed by the tubular part of nephron?
question_answer156)
Name two excretory products other than oxygen and carbon
dioxide in plants.
question_answer157)
Name the process which helps in artificial removal of
wastes from the body.
question_answer158)
Why is urine yellow in colour?
question_answer159)
Why is right kidney slightly lower in position as compared
to the left kidney?
question_answer161)
How is urea removed in the human body?
question_answer167)
What are the different parts of human excretory system?
question_answer168)
How much urine is passed by an human adult in 24 hours?
question_answer169)
Which organ synthesises urea?
question_answer171)
What will happen, if one kidney of a person is
removed?
question_answer172)
Why ammonia is converted to uric acid crystals directly in
uricotelic organisms?
question_answer173)
Which of the nitrogenous waste is most soluble in water?
question_answer174)
It is said that kidney helps in osmoregulation. What is
osmoregulation.
Explain.
question_answer175)
What do you mean by artificial kidney?
question_answer176)
Why storing waste products in leaves proves beneficial for
the plants?
question_answer177)
How unicellular organisms performs excretion?
question_answer178)
From which substance urea is formed in the liver?
question_answer179)
How do leaves of a plant help in excretion?
question_answer180)
What are the waste materials eliminated by our body? How are they
generated?
question_answer181)
What happens to the glucose in the filtrate?
question_answer182)
Write the function of the following
(a)
Renal artery (b) Renal vein
question_answer183)
Which gas is produced during C photosynthesis? How
is it removed from plants?
question_answer184)
What will happen if there is sudden shortage of water in
the body?
question_answer185)
How is a working kidney dialysis machine similar to a
healthy kidney?
question_answer186)
Complete the labelling of the diagram.
question_answer188)
What happens to glucose that enters along with filtrate?
question_answer189)
What is the main function of kidneys in humans?
question_answer192)
(a) What is the filtering unit of kidney?
(b) Why is
it called so?
question_answer193)
What is the function of Bowman's capsule and glomerulus in
nephron?
question_answer195)
What is excretion ? How do unicellular organisms remove
their wastes ?
question_answer198)
State the functions of (a) renal artery (b) kidney (c)
urinary bladder.
(3)
question_answer208)
What outside raw
materials are used by an organism? [NCERT]
question_answer209)
Why is energy
required by an organism even during sleep?
question_answer211)
What is
chlorophyll?
question_answer212)
Name the various
factors which affect the rate of photosynthesis.
question_answer213)
Define photolysis.
question_answer214)
Define light
reaction.
question_answer215)
Define dark
reaction.
question_answer216)
What are
peristaltic movements?
question_answer217)
Which is the
largest gland in the human body?
question_answer218)
Give an example of
an organism whose digestion is intracellular.
question_answer219)
Name the various
cells through which water moves upward to reach the leaves.
question_answer220)
What will happen to
a plant if its xylem is removed? [CBSE Delhi 2009]
question_answer221)
In which chamber of
heart is oxygenated and deoxygenated blood found?
question_answer222)
What makes red
blood corpuscles red?
question_answer223)
What is the main
function of kidneys in humans?
question_answer224)
In which part of
nephron is water reabsorbed?
question_answer225)
In which region of
kidney Malpighian corpuscles are found?
question_answer226)
What process in
plants is known as transpiration? [CBSE Delhi 2008]
question_answer227)
What is urethra?
question_answer229)
Name the membrane covering the lungs.
question_answer230)
What is osmoregulation? [CBSE (AI) 2006]
question_answer232)
Why do the walls of
trachea not collapse when there is less air in it?
question_answer233)
Which part of root
is involved in the exchange of respiratory gases in plants?
question_answer235)
What prevents
backflow of blood inside the heart during contraction?
question_answer236)
Which is the first
enzyme to mix with food in the digestive system?
question_answer237)
Why does lack of
oxygen in muscles often lead to cramps among cricketers?
question_answer239)
Where does the
oxygen come from when it is liberated during photosynthesis?
question_answer240)
What is the
internal (cellular) energy reserve in autotrophs?
question_answer241)
In which forms do
most plants absorb nitrogen?
question_answer243)
What protects the
inner lining of stomach from hydrochloric acid?
question_answer244)
What is chyme?
question_answer245)
Name the enzyme
which is present in infants but may be absent in adults.
question_answer247)
Where do plants get each of the raw materials required
for photosynthesis?
question_answer248)
[NCERT, CBSE (AI)
2008]
What is the function of digestive enzymes?
question_answer253)
How is the amount
of urine produced regulated? [NCERT]
question_answer254)
How are fats
digested in our bodies? Where does this process take place? [NCERT]
question_answer255)
How are the alveoli
designed to maximize the exchange of gases? [NCERT]
question_answer256)
What would be the
consequence of a deficiency of hemoglobin in our body?
question_answer257)
[NCERT]
What is
compensation point?
question_answer258)
What happens to
visible light of the sun when it falls on chlorophyll?
question_answer259)
How does water
affect the rate of photosynthesis in plants?
question_answer261)
What substances are
contained in the gastric juice? What are their functions?
question_answer262)
What are the
various processes that take place in the duodenum?
question_answer263)
What is peptic
ulcer? How is peptic ulcer caused?
question_answer264)
How does
respiration occur in the roots of the plant?
question_answer265)
How does
respiration occur in the leaves?
question_answer267)
How does
respiration occur in the stem of the plant?
question_answer268)
What is ascent of
sap?
question_answer269)
What is transpiration
pull?
question_answer270)
What is root
pressure?
question_answer272)
State the function
of Bowman's capsule and glomerulus.
question_answer273)
What happens to
glucose which enters the nephron along with the filtrate?
question_answer274)
Write down the
functions of lymph nodes.
question_answer275)
Why is cigarette
smoking injurious to health?
question_answer276)
State the function
of epiglottis. [CBSE]
question_answer278)
Why are white blood
corpuscles called soldiers of the body?
question_answer281)
State differences
between artery, vein and capillary.
question_answer282)
What happens to the
rate of breathing during vigorous exercise and why?
question_answer283)
How do the guard
cells regulate opening and closing of stomatal pores?
question_answer285)
Is 'nutrition' a
necessity for an organism? Discuss.
question_answer287)
Name the energy
currency in the living organisms. When and where is it produced?
question_answer290)
What criteria do we
use to decide whether something is alive? [NCERT]
question_answer292)
How is oxygen and
carbon dioxide transported in human beings? [CBSE(AI)2008]
question_answer293)
How are water and
minerals transported in plants? [NCERT]
question_answer295)
How is food
transported in plants? [NCERT]
question_answer296)
Describe the
structure and functioning of nephrons. [NCERT]
question_answer297)
What are the
methods used by plants to get rid of excretory products? [NCERT]
question_answer298)
Describe double
circulation in human beings. Why is it necessary?
question_answer300)
What are the
differences between the transport of materials in xylem and phloem?
question_answer302)
Describe the glands
involved in the digestive system.
question_answer303)
Explain the nutrition process in an Amoeba. [NCERT
Exemplar]
question_answer304)
Give the role of
liver in the human beings.
question_answer305)
Distinguish between
breathing and respiration.
question_answer307)
Describe the
respiration process in human beings.
question_answer308)
Describe the
process of digestion of food in human beings. [CBSE (AI) 2005]
question_answer309)
Describe the
structure of human kidney.
question_answer310)
Differentiate
between blood and lymph.
question_answer312)
Describe internal
structure of a human heart.
question_answer315)
Why do fishes die
when taken out of water?
question_answer316)
What would happen
if green plants disappeared from the Earth?
question_answer317)
Why is small
intestine in herbivores longer than in carnivores?
question_answer319)
Why do veins have thin walls as compared to arteries?
question_answer320)
Why and how does
water enter continuously into the root xylem?
question_answer321)
Why is more
concentrated yellowish urine excreted in summers?
You need to login to perform this action.
You will be redirected in
3 sec
The leaf is plucked, strip is removed from it and putted
in iodine solution. It is observed that uncovered portion turns blue black.
Whereas covered does not with iodine solution why is it so?
Name the major and least constituent of the body with
reference to the graph.
(a) Suggest why crops close to the hedge do not grow as
well as crops in the middle of the field.
(b) Why do crops around 10-15 metres from the hedge grow
better than crops in the middle of the field?
Fig.
A
(a) On Fig. A label structures T, U and
V
(b) Name the secretion which
passes down tube W and explain how it helps in fat digestion.
(c) In cases of diarrhoea, name the major process in region X which is no
longer occurring normally.
(a) At what time did photosynthesis start?
(b) At what time was the rate of photosynthesis greatest?
(c) At what time of the day did it get dark?
(d) (i) What processes causes carbon dioxide to be given
out?
(ii) Does this process only occur when it is
dark?
(e) What other factors could affect the rate of
photosynthesis?
He counted the number of bubbles of oxygen gas produced. His
results are given in the table
(a) Identify the parts of the alimentary canal that R and
S represent.
(b) Explain the graph for protein digestion.
(c) Complete digestion occurs at the end of part T. What
are the contents of the gut at the end of part T, assuming that absorption does
not occur?
(d) How will digestion be affected, if the pancreas malfunctions?
