The process through which spermatids are transformed into spermatozoa (sperms) is known as:

Increase in population is due to:

Which of the following term refers to the confinement of the species to a specific area and also the same species are not found anywhere else?

MTP is considered safe up to _________ weeks of pregnancy.

Study the following figure and answer the questions:

AUG codes for which amino acid?

Match List - I with List - II.

List - I	List - II
(A) Barrier methods	(I) Prevents physical contact between ovum and sperm
(B) IUD	(II) Sterilizes physical contact between ovum and sperm
(C) Oral Contraceptives	(III) Increases phagocytosis of sperms and suppress sperm motility:

Choose the correct answer from the options given below :

What kind of IUD is Lippes loop?
A. Non-medicated
B. Copper releasing
C. Zinc releasing
D. Hormone releasing E. Medicated IUDs
Choose the correct answer from the options given below:

Identify the free living nitrogen fixing bacteria
A. Rhizobium
B. Mycorrhiza
C. Azospirillum
D. Azotobacter
Choose the correct answer from the options given below:

The first \(m\)-year moving average of the data \(10,20,30,40,50\) is 30 . The value of \(m\) is :

Which of the following processes is responsible for the formation of a Delta when river water meets the sea water?

Answer the question on the basis of passage given below :
Adsorption is a surface phenomenon and it differs from absorption which occurs throughout the body of the substance that absorbs. In physiosorption the attractive forces are mainly van der Waal's forces while in chemisorption ionic/covalent bonds are formed between particles of adsorbent and adsorbate. The catalytic activity of finely divided iron in Haber's process of ammonia manufacture can be explained by adsorption theory. Adsorption being an exothermic process, the heat of adsorption is utilised in enhancing the rate of the reaction. Adsorption has many applications being used in gas masks, control of humidity, chromatograph separation, curing diseases etc.
Which of the following is not a surface phenomenon?

Four resistors of \( 8 \ \Omega \) each are connected in parallel, five such combinations are then connected in series. What is the total resistance?

In the following sequence of reaction: \(CH _3 Br \xrightarrow{ KCN } A \xrightarrow{ H _3 O ^{+}} B \xrightarrow{ LiAH _4 / \text { ether }} C\)
The end product \((C)\) is