EASY
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The numbers of digits in forelimbs and hind limbs of a frog are, respectively

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Important Questions on Structural Organisation in Animals

EASY

In the following passage there are blanks, each of which has been numbered. There are questions given below the passage and for each question, four words are suggested, one of which fits the blank appropriately. Find out the appropriate word in each case.

Whenever I go into a bank, I feel scared. Everybody and everything that I see there (1) ____ me. As for the manager the sight (2) ____ him simply terrifies me and (3) ____ me want to runaway (4) _____ I can. As soon as I (5) ____ the door of the bank I lose my head (6) ____ when I try to do any (7) ____ there, I behave like an idiot. I cannot explain (8) ____ for this but that is how it (9) ____ has been that is how it is (10) ____.

Select the most appropriate option for blank No. 10.

MEDIUM

For given diagram choose the correct option for XY, and Z:

Question Image 

EASY
What is the de-Broglie wavelength associated with an electron, accelerated through a potential difference of 64 volts? h=6.63×10-34J.s
HARD
Bhuvan wants to manufacture protein food supplements in his industry by using sewage and industrial wastewater. Suggest the name of the microbe and the components of the wastewater that can be used in his industry.
MEDIUM
In a recent forest fire at the silent valley, phosphorous from the dead organisms was released into the soil due to a specific organism. Name the organism.
EASY
Estimate the distance for which ray optics is good approximation for an aperture of 5 mm and wavelength 500 nm?
HARD
Alien species invasion has been a threat to biodiversity. Justify with the help of a suitable example. List other three causes responsible for such a loss.
MEDIUM
The phenotype of one parent for skin colour is AABBCC and other parent is aabbcc. What will be the skin colour and genotype for their progeny?
HARD
The major features of embryonic development at various months of pregnancy are given below. Choose the correct option for correct sequential events.
I) The first movements of the foetus
II) The foetus develops limbs and digits
III) The embryo's heart is formed
IV) The body is covered with fine hair
EASY
Out of the following given loops in which loop, the direction of induced current is from acb
MEDIUM

Assertion (A): During pulmonary respiration in frog, buccopharyngeal cavity acts like a force pump.

Reason (R): When the floor of buccopharyigeal cavity is lowered, air forces the glottis to open and reach the lungs.

The correct option among the following is: