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Four of Mr. Verma's pupils made a statement each about the leaves of plants. Which pupil(s) has/have made correct statement ?


ASonika only
BMayank only
CAshmita, Sonika and Ajay
DAshmita and Mayank

Refer to the given word-chop table. Make combinations of boxes to find the name of fibres and materials hidden in it and then, answer the following questions.

Select the item that CANNOT be made of any of the materials given in the table.

A
B
C
D

A man walks northwards. After a while he turns towards his right and walks straight then he moved little further to his left. Finally, after walking a distance of one kilometre he turns to his left again. In which direction is he moving now?

ANorth
BSouth
CEast
DWest

How many possible combinations of 1 comb and 1 hairband can be formed from 3 combs and 4 hairbands?

A10
B12
C14
D16

Rajat, a class 7 student studied the nature of a few common substances with the help of acid-base indicators. His observations are summarised in the given table with a few blank spaces.

Study the table carefully and fill in the blanks by selecting an appropriate option.

A(i)-Apple juice, (ii)-Red, (iii)-Lemon juice, (iv)-Yellow, (v)-Sugar solution
B(i)-Sugar solution, (ii)-Yellow, (iii)-Salt solution, (iv)-Pink, (v)-Lime water
C(i)-Common salt, (ii)-Green, (iii)-Spinach juice, (iv)-Magenta, (v)-Caustic soda
D(i)-Lime juice, (ii)-Green, (iii)-Sugar solution, (iv)-Yellow, (v)-Aerated drink

According to the given speed-time (v-t) graph, what happens to the distance covered by the car from 0-10 minutes?


AIt goes on increasing.
BIt goes on decreasing.
CIt first increases and then decreases.
DIt first decreases and then increases.

Count the number of squares in the given figure.


A25
B26
C20
DNone of these

The diagram below shows four beakers of water, P, Q, R and S, at different temperature and volume.

Which one of the following statements is true?

ABeaker P has the most heat energy.
BBeaker R has more heat energy than beaker Q.
CBeaker S has more heat energy than beaker R.
DBeaker P and beaker S have the same amount of heat energy.

Shruti planted many plants belonging to two separate species X and Y in her garden. She watered them regularly and took proper care of them. Plants of both species flowered. After sometime Shruti noticed that only plants belonging to species X yielded fruits whereas fruit setting was absent in plants of species Y. What could be the probable reason for this?

APlants of species X are wind pollinated but plants of species Y are insect pollinated.
BSpecies X is dioecious whereas species Y is monoecious.
CPlants of species Y present in Shruti’s garden are dioecious male plants.
DPlants of species X bear only unisexual female flowers whereas plants of species Y bear bisexual flowers.

Read the given passage having some variables and few italicised words. Different respiratory organs are present in different organisms. X is the main respiratory organ in humans. Respiratory system of cockroach consists of small openings on the sides of its body called tracheoles which are connected to the tubes called tracheae that are further branched into spiracles. Scoliodon respires through Y which is richly supplied with blood vessels. Z is the main site of gaseous exchange in plants. Each Z is guarded by two kidney shaped subsidiary cells which are further flanked by specialised epidermal cells called guard cells.
Identify X, Y and Z in the given passage and select the incorrect option regarding them.

AWhales and dolphins also have X as their respiratory organ where alveoli is the main site of gaseous exchange.
BY is the respiratory organ in tadpole larva and sea horse.
CZ is absent in all hydrophytes but is abundantly present on the upper leaf surface of all xerophytes.
DWhen pressure inside X drops, inspiration occurs and when pressure inside X starts increasing the air contained in it is pushed out causing expiration.