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Roasting is a process of heating the ore strongly in a free supply of air or oxygen. Calcination is a process of heating the ore strongly in the absence of air or oxygen.

The three primary types of lipids are phospholipids , sterols, and triglycerides.

Correct option: (2) inflammation of bronchi and bronchioles

Explanation: 

Asthma is a difficulty in breathing causing wheezing due to inflammation of bronchi and bronchioles. It can be due to increasing air born allergens and pollutants. Asthma is an allergic condition. Many people in urban areas are suffering from this respiratory disorder.

Correct option: (3) Lysosomes and Vacuoles

Explanation: 

Lysosomes and Vacuoles do not have DNA.

Correct option: (1) Trichoderma

Explanation: 

Fungus Trichoderma is a biological control agent being developed for use in the treatment of plant diseases.

Correct option: (2) Chilled ethanol

Explanation: 

During the isolation of desired gene, chilled ethanol is used for the precipitation of DNA.

Correct option  (1) Water + Nitric acid

Explanation:

Solutions showing negative deviation from Raoult's law form maximum boiling azeotrope

Water and Nitric acid → forms maximum boiling azeotrope

(c) 2F₂ (g) + 2H₂ O (l) → 4H⁺ (aq) + 4F^– (aq) + O₂ (g)

     Cl₂ (g) + 2H₂ O (l) → HCl(aq) + HOCl

Inflorescence is the manner in which the flowers are arranged on the flowering axis. During the flowering season, the vegetative apex of the stem gets converted into a floral meristem. Based on whether the floral axis continues to grow or end in a flower, inflorescence is classified into racemose and cymose. In racemose inflorescence, the floral axis continues to grow and produces flowers laterally. On the other hand, in cymose inflorescence, the main axis terminates into a flower. Hence, it is limited in growth.

(3) Convergent evolution 

(2) CH₄, H₂, NH₃ and water vapor at 800°C

Lysine is basic amino acid

(2) Glucocorticoids stimulate gluconeogenesis.

Prostate, Seminal vesicle and Bulbourethral gland.

(2) Insect pests

(2) insects or wind

In water hyacinth and water lily, the flowers emerge above the level of water and are pollinated by insects or wind as in most of the land plants.

The cells of endosperm are filled with reserve food materials and are used for the nutrition of the developing embryo.

Answer is : 95

cryIAc/cryIIAb Crygene

Those organs in which lymphocytes originated, matured and proliferated are called lymphoid organs, for example- Bone marrow and Thymus. 

Phenotypic ratio:1:2:1, 

Genotypic ratio:1:2:1

The most common method of producing radioisotopes is by neutron activation in a nuclear reactor; this involves the capture of a neutron by a nucleus which leads to an excess of neutrons (a neutron-rich atom).

The first law of thermodynamics is a version of the law of conservation of energy, adapted for thermodynamic systems. The law of conservation of energy states that the total energy of an isolated system is constant; energy can be transformed from one form to another, but can be neither created nor destroyed.
Mathematical expression is, ΔU=Q+W

Emasculation is the process of removing anthers from bisexual flowers without affecting the female reproductive part (pistil), which is used in various plant hybridization techniques. Emasculation is performed by plant breeders in bisexual flowers to obtain the desired variety of a plant by crossing a particular plant with the desired pollen grain. To remove the anthers, the flowers are covered with a bag before they open. This ensures that the flower is pollinated by pollen grains obtained from desirable varieties only. Later, the mature, viable, and stored pollen grains are dusted on the bagged stigma by breeders to allow artificial pollination to take place and obtain the desired plant variety

Tapetum is the innermost layer of the microsporangium. It provides nourishment to the developing pollen grains. During microsporogenesis, the cells of tapetum produce various enzymes, hormones, amino acids, and other nutritious material required for the development of pollen grains. It also produces the exine layer of the pollen grains, which is composed of the sporopollenin.

(a) Humans reproduce sexually.
(b) Humans are viviparous.
(c) Fertilization is internal in human.
(d) Male and female gametes are haploid .
(e) Zygote is diploid.
(f) The process of release of the ovum from a mature follicle is called ovulation.
(g) Ovulation is induced by a hormone called the luteinizing hormone.
(h) The fusion of the male and the female gametes is called fertilization.
(i) Fertilization takes place in the fallopian tube.
(j) The zygote divides to form blastocyst, which is fertilization implanted in uterus.
(k) The structure which provides vascular connection between the fetus and uterus is called placenta.

Mendel select pea as his experimental material because:-

(i) Many varieties were available with asservable atternative form for a triat of characteristic

(ii) Peas normally self pollinate, as their corolla completely enclose the reproductive organs until pollination in completed

(iii) It was easily available

(iv) It has pure lines for experimental purpose i.e. they always breed true

(v) It has contrasting characters. The traits were sud colour, pod shape, flower shap, position of flowers, seed shape and plant height

(vi) Its life cycle was short and produce large number of offsprings

(vii) The plant is grown easily and does not require care except at the time of pollination

The two major functions of ovary are:-

(i) Ovary is a female gonea

(ii) It produces female sex cells called ova and the femals sex harmones estrogen

The two major functions of testies are:-

(i) Testies is the male gonads

(ii) It produce sperm and granular cells which produce sex hormone test osterone

Haemophilia is a sex linked disease, coming from one generatlon to another by bllod cells. In this disease bleeding is continuously occure. The cloting factor is not effective in this diesease. So is called as bleeder disease.

Correct option  (b) brad 

Explanation:

Heterospory and seed habit are discussed mostly with respect to ligule. Development of two types of spores (microspores and megaspores) is called heterospory. Though all seed-bearing plants are heterosporous, it evolved in some pteridophytes. In early heterosporous plants, megaspores were released from the parent. 

But in seed plants, these are retained and fertilised to become seed. This habit is seen in Selaginella which bears a small multicellular scale-like structure called ligule at the base of leaf on adaxial side.

An abnormal and uncontrolled division of cells is termed as Cancer.
The Cancerous cells are different from the normal cells in the following ways.

In our body, the growth and differentiation of cells is highly controlled and regulated. The normal cells show a property called contact inhibition.

The surrounding cells inhibit uncontrolled growth and division of cells.
The normal cells lose this property and become cancerous cells giving rise to masses of cells called tumors. Transformation of normal cells into cancerous cells is induced by some physical, chemical and biological agents (carcinogens).

Correct option (a) CD   

Explanation:

For the negative resistance, when we increase the voltage, the current will decrease. Therefore from the graph, we find that the current in CD is decreased when voltage is increased.

Correct option (b) bacterial gene

Explanation:

The process of replication in plasmid DNA, other than initiation, is controlled by bacterial gene,

According to Hund's rule pairing of electrons takes place after all the available degenerated orbitals (2p - orbitals) are filled with single electron. 

a)increasing the depth(thickness of the beam) 

b)increasing its breadth 

Water of Crystallization : Water of crystallization is the fixed number of water molecules chemically attached to each formula unit of a salt in its crystalline form.

(c) Agaricus 

Radial symmetry is found in 

(d) Spider

(a) The defining characteristic of a vertebrate is considered the backbone or spinal cord, a brain case, and an internal skeleton, but the latter do not hold true for lampreys, and the former is arguably present in some other chordates.

निगलद्वार के द्वारा ग्रसनी ग्रासनली से जुड़ा होता है।

Sporulation in amoeba has been observed in social species like Dictyostelium discoideum. This process is unique and results in a mass of spores that are held up on a tapering stalk.

(a) generally marine, but few are found in fresh water. 

(b) The bryophytes are those embryophyte plants ('land plants') that are non-vascular they have tissues and enclosed reproductive systems, but they lack vascular tissue that circulates liquids. Although they are land plants they require water for the process of reproduction

(a) A gene has two separate independent chromosome. Each cell will have two copies of each chromosome one each from the male and female parents.