Observe the figures and answer the question.

Match List I with List II.

LIST I	LIST II
A. Globular embryo	I. W
B. Mature embryo	II. Y
C. Zygote	III. Z
D. Heart-shaped embryo	IV. X

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Select which step/s out of the following doesn't/don't belong to the process of decomposition.
(A) Fragmentation
(B) Humification
(C) Anabolism
(D) Mineralisation
(E) Leaching
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Number of births during a given period in a population is called as

Arrange the following stages of primary succession in water in correct sequence.
A. Rooted submerged plants
B. Marsh meadows
C. Phytoplanktons
D. Scrubs followed by trees
E. Free floating plants
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Thalassemia is an:

Observe the given figures and answer the question

The conditions created by Miller in his experiment were:

A student was fascinated with the beautiful mauve colored flowers of water hyacinth, he asked his teacher to allow him to take a few plants to his village pond, but teacher denied him to do so because:

The process of retrieval of information from the carrier wave at the receiver is termed as:

The probability distribution of a random variable \(X\) is given below :

x	0	1	2	3
\(P ( x )\)	\(\frac{k}{3}\)	\(\frac{k}{2}\)	\(\frac{k}{4}\)	\(\frac{k}{7}\)

Then the value of \(k\) is

Read the passage carefully and answer:
Organic compounds derived from NH3 by replacing one or more H-atoms with alkyl or aryl groups will form primary, secondary and tertiary amines. The common methods which include their preparations are reduction of nitro group, amide group and nitrile group, Gabriel phthalimide synthesis and ammonolysis of alkyl halides. Amines are basic in nature due to the presence of a lone pair of electrons on the nitrogen atom. Important chemical properties of amines include acylation, alkylation and their interaction with nitrous acid. There are various tests which can distinguish different types of amines from each other, for e.g. carbylamine test, Hinsberg's test, coupling reaction etc. Another important class of compounds which can be derived from primary amines is azo compounds. These compounds are intensely colored and widely used as dyes in textile, leather and food industries.
How many different structural isomers that correspond to the molecular formula \(\mathrm{C}_3 \mathrm{H}_9 \mathrm{~N}\) are possible? Out of these, how many will give a positive carbylamine test?

When a ferromagnetic substance is placed in a magnetic field, it becomes a permanent magnet because:

Magnetic moment values for \([\text{Fe}(\text{H}_2\text{O})_6]^{3+}\) and \([\text{Fe}(\text{CN})_6]^{3-}\) are

Which of the following statements are correct?
A. p-Nitroaniline is a stronger base than aniline
B. Aniline is weaker basic than o-nitro aniline
C. Aniline is a weaker base than ethylamine
D. p-methyoxyaniline is stronger base than aniline
E. Aniline is weaker base than ammonia
Choose the correct answer from the options given below: