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Ten male animals, each of type X and Y were living together for last few months in captivity in a well defined area (full of greenery). Other types of animals were not present in this area. Then an animal Z was introduced in this area. After few days, their numbers were counted and tabulated as shown here.

What does this indicate?

A Z is a carnivore.
B Y is a herbivore.
C X is a herbivore.
D All of these

Rini was asked to write some involuntary actions. She has written some voluntary actions also as shown in the list.

Which of the following groups of seeds contains only dicot seeds?

AWheat, Rice, Maize
BPea, Maize, Bean
CPea, Bean, Gram
DMaize, Gram, Pea

A wire is being drawn to make it thinner such that the length of the wire l increases and radius r decreases. Its resistance R will finally be proportional to

A
B
C
D

The given graph shows the variation of boiling point of water with pressure.

Which of the following best represents the state(s) of water at points X, Y and Z?

Fill in the blanks by choosing the correct option.Turmeric is one of the most commonly used spices in our kitchen. It leaves a yellow stain on white clothes. On rubbing with soap which is p in nature, the yellow stain changes to q colour. Now, if we pour some r containing s over this stain, it again becomes yellow in colour due to t .

Study the given dichotomous key and select the correct option.
I. a. It is a unicellular organism - go to II
b. It is multicellular organism - go to III
II. a. It contains chlorophyll - P
b. It does not contain chlorophyll - Q
III. a. It is used in production of antibiotics - R
b. It decomposes the organic waste and dead plants and animals - S

AP could be Spirogyra whereas Q could be Rhizopus.
BR could be Penicillium whereas S could be diatoms.
CP could be Chlamydomonas whereas R could be Streptomyces.
DNone of these

A few polymers are listed as :

Select the correct statement regarding these polymers.

A(iii) and (v) have same monomer units.
B(i) and (v) have same monomer units.
C(iii) and (iv) have same monomer units.
D(ii) and (iv) have same monomer units.

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.