Refer to the given diagram and
identify the correct statements.
(i) J produces saliva which contains enzyme amylase that breaks down cellulose and starch into simple sugars.
(ii) Digestive juices secreted by N contain enzyme which breakdown the proteins into simple substances. N also secretes HCl, which kills harmful microorganisms present in food.
(iii) K is the largest gland in the body and its secretion helps in digestion of fats.
(iv) M bears finger like projections called villi and it stores digestive juice secreted by liver.
(v) P helps in absorption of food and transports digested food to different organs through blood capillaries.
(vi) Q is small structure at junction of small and large intestine which stores faecal matter until egestion.
(vii) Digestive juices of L help in digestion of proteins, carbohydrates and fats.
(viii) O absorbs water and minerals from the chyme.
A(ii), (iii), (v), (vii) and (viii) only
B(i), (iii), (iv), (vi) and (viii) only
C(ii), (iv), (v) and (vi) only
D(i), (ii), (v), (vi) and (viii) only
Read the given statements and state (T) for true and (F) for false ones.
I. A compound can be broken down into its constituent elements by chemical methods.
II. A compound always contains the same elements combined together chemically in a fixed ratio.
III. A compound retains the properties of its constituent elements.
IV. When two or more elements or compounds are brought together, they always react chemically.
V. Tap water is a compound.
Refer to the given figure.
Which of the following statements is correct regarding the process shown in the figure?
AProcess I prevents loss of water from plants whereas process III is involved in dew formation.
BThe physical states of water at X and Y are liquid and gas, respectively.
CProcess II speeds up in windy condition.
DDeforestation will decelerate process V and accelerate process IV.
Refer to the given flow chart and select the incorrect statements regarding P, Q, R, S and T.
(i) Q is cellulosic whereas S is proteinaceous in nature.
(ii) S could be obtained from a viviparous animal whereas T could be obtained from an oviparous animal with four stages in its life cycle.
(iii) P and S are non-biodegradable fibres.
(iv) P and R are petroleum based fibres.
(v) Organisms providing S generally inhabit desert lands whereas those providing Q generally inhabit polar regions.
A(i), (ii) and (iii) only
B(i) and (ii) only
C(i), (iv) and (v) only
D(iii), (iv) and (v) only
Which of the following statements are correct?
(i) Some animals help us in keeping our environment clean. They consume dead animals and dispose them off. They are called scavengers.
(ii) Quinine, a forest product obtained from the bark of Cinchona tree, is widely used to treat typhoid.
(iii) Van Mahotsava is a festival of cutting down trees.
(iv) International Day of forests is celebrated on 21st March every year.
A(i) and (iv) only
B(ii) and (iii) only
C(i) and (ii) only
D(iii) and (iv) only
Refer to the given figure of brain with its parts labelled as X, Y and Z. Which of the following holds true for X, Y and Z?
AY helps us to balance our body and keep us in an upright posture.
BX helps us in learning our lessons and recalling the learnt concepts.
CZ controls the involuntary actions of our body.
DAll of these
Which of the following sets of flowers contain incomplete flower?
AHibiscus and Petunia
BGulmohar and Mustard
CPea and Mulberry
DDate palm and Mulberry