Point mutations means:

Bt toxin is expressed in plants to provide resistance to insects; hence used as a bio-pesticide. Select the correct examples of Bt plants:
(A). Bt Cotton
(B). Bt Rice
(C). Bt Peas
(D). Bt Corn
Choose the correct answer from the options given below:

Read the following paragraph carefully and answer the given questions.
Certain types of leukocytes (WBC) of our body like polymorpho-nuclear leukocytes (PMNL-neutrophils) and monocytes and natural killer (type of lymphocytes) in the blood as well as macrophages in tissues can phagocytose and destroy microbes. For determining the cause of allergy, the patient is exposed to or injected with very small doses of possible allergens, and the reactions studied. The use of drugs like anti-histamine, adrenalin and steroids quickly reduce the symptoms of allergy. Heroin, commonly called smack is chemically diacetylmorphine which is a white, odourless, bitter crystalline compound. This is obtained by acetylation of morphine. Techniques like radiography (use of X-rays), CT (computed tomography) and MRI (magnetic resonance imaging) are very useful to detect cancers of the internal organs. Different species of Plasmodium (P. vivax, P. malaria and P. falciparum) are responsible for different types of malaria. Of these, malignant malaria caused by Plasmodium falciparum is the most serious one and can even be fatal.
Malignant malaria is caused by -

Match List - I with List - II.

List - I	List - II
(A) Rheumatoid arthritis	(I) Primary lymphoid organ
(B) AIDS	(II) Antibody mediated immune response
(C) Thymus	(III) Immuno deficiency disease
(D) B-Lymphocytes	(IV) Auto-immune disease

Choose the correct answer from the options given below :

Arrange the following spermatogenic cells in correct sequence of spermatogenesis.
(A) Spermatids
(B) Spermatogonium
(C) Secondary Spermatocytes
(D) Primary Spermatocytes
Choose the correct answer from the options given below:

Identify the microbes producing commercially important organic acids and enzymes from the given options:
(A) Trichoderma polysporum
(B) Streptococcus
(C) Clostridium butylicum
(D) Aspergillus niger
Choose the correct answer from the options given below:

A double stranded DNA has 30\% of Thymine. The percentage of Guanine in it would be:

The similarities between sickle-cell anaemia and thalassemia are:
(A) Both are autosome linked recessive disease
(B) Both are blood related disorder
(C) Parents of the offsprings are carriers
(D) Both are controlled by same genes
Choose the correct answer from the options given below:

A 200 turns closely wound circular coil of radius 10 cm carries a current of 3.5 A. The magnetic moment of the coil is

Human activities have accelerated rate of species extinction in the world. The major cause for it are
A. Habitat loss and defragmentation
B. Habitat loss and fragmentation
C. Over-exploitation
D. Alien species invasions
Choose the correct answer from the options given below:

A series combination of two capacitors \( C_1 = 3 \, \mu\text{F} \) and \( C_2 = 6 \, \mu\text{F} \) is connected in parallel with a third capacitor \( C_3 = 4 \, \mu\text{F} \). This system is connected to a 10 V battery. The total energy stored in the system is:

Which of the following plant is pollinated by insects?

Acetaldehyde and benzaldehyde can be best distinguished by: