Which one of the following hormones is produced only during pregnancy?

Observe the figures and answer the question.

Which of the following is not a constituent of bio-gas?

Read the passage carefully and answer the questions given along
Our immune system plays the major role in preventing diseases when we are exposed to disease-causing agents. Immunity is of two types: (i) Innate immunity and (ii) Acquired immunity. The human immune system consists of lymphoid organs, tissues, cells and soluble molecules like antibodies. The immune system also plays an important role in allergic reactions, auto-immune diseases and organ transplantation. The primary lymphoid organs are bone marrow and thymus. The secondary lymphoid organs are spleen, lymph nodes, tonsils, Peyer's patches of small intestine and appendix. There is lymphoid tissue also located within the lining of the major tracts (respiratory, digestive and urogenital tracts) called mucosa associated lymphoid tissue (MALT). It is important to note that HIV/AIDS is not spread by mere touch or physical contact; it spreads only through body fluids. AIDS has no cure, prevention is the best option. Adolescence is accompanied by several biological and behavioural changes and surveys and statistics show that use of drugs and alcohol has been on the rise especially among the youth. Factors associated with drug and alcohol abuse among adolescents are a child's natural curiosity, stress, the perception among youth that it is 'cool' or progressive to smoke, media exposure and an unstable or unsupportive family structures and peer pressure. It is best to identify the situations that may push an adolescent towards use of drugs or alcohol, and to take remedial measures well in time.
Which one of the following can never be over estimated when it comes to the complete well-being of adolescents?

Identify the correct sequence of events during the menstrual cycle in female.
(A) Next cycle begins
(B) Proliferative phase
(C) Menstruation
(D) Secretory phase
Choose the correct answer from the options given below:

The rate of decomposition is controlled by:

In water hyacinth, pollination is carried out by -
(A) Wind
(B) Water
(C) Insects
(D) Animals
Choose the correct answer from the options given below:

Which of the following can be used by females as injections or implants under the skin for birth control.
(A) Oxytocin
(B) Follicle Stimulating Hormone (FSH)
(C) Progestogens alone
(D) Progestogen-estrogen combinations
Choose the correct answer from the options given below:

The correct mathematical expression for amplitude modulated wave is :

A long solenoid with 25 turns per cm has a small loop of area \( 2.0 \text{ cm}^2 \) placed inside the solenoid normal to its axis. If the current carried by the solenoid changes steadily from 3.0 A to 5.0 A in 0.1 s. The induced emf in the loop due to change in the current is

\(\Lambda_m^o\) for \(NaCl , HCl\), and NaAc are \(126.4,425.9\) and \(91.0 S cm ^2 mol^{-1}\), respectively. \(\Lambda_m^o\) for HAc is

Read the passage and answer the question given below.
When a host is exposed to antigens, which may be in the form of living or dead microbes or other proteins, antibodies are produced in the host body. This type of immunity is called active immunity. Active immunity is slow and takes time to give its full effective response. Injecting the microbes deliberately during immunisation or infectious organisms gaining access into body during natural infection induce active immunity. When antibodies are directly given to protect the body against foreign agents, it is called passive immunity.
Production of antibodies against antigens in the body is:

Match List-l with List-II

List-l (Solutions)	List-II (Explanation)
(A) Saturated solution	(I) Solution having two components.
(B) Isotonic solutions	(II) A solution whose osmotic pressure is more than that of another.
(C) Binary solution	(III) A solution which contains the maximum amount of solute that can be dissolved in a given amount of solvent at a given temperature.
(D) Hypertonic solution	(IV) The solutions having same osmotic pressure at a given temperature.

Choose the correct answer from the options given below :

Sporozoites of Plasmodium are formed in ______ of female Anopheles mosquito.