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Every part of plant is used by local peoples of Rajasthan.

A drug called asgandh is extracted from the roots. It is used in the treatment of hiccup, cough and rheumatism

When Androecium consists of 6 stamens in which two lateral and short stamens form outer whorl and 4 median and long stamens form inner whorl are called Tetradynamous.

Class — Dicotyledones 

Sub-class — Polypetalae 

Series — Calyciflorae

Order — Rosales 

Family — Leguminosae 

Sub-family — Papilionaceae

When stamens are fused with petals are called epipetalous. Example is China rose.

When filaments of all stamens fused are called monoadelphous which when all stamens forms two bunches are called didelphous.

When sepals remain attached with fruit after fertilization are called persistent calyx.

(a) Papilionaceae 

(b) Malunceae 

(c) Brassicaceae

Distinguish characters of Malvaceae  

• Mostly epicalyx is present. 
• Aestivation of corolla is twisted. 
• Stamens are indefinite, monoadelphous and forms staminal tube.
• Anther lobes are monothecous, renniform, extrorse. 
• Stigmas are as many as the number of carpels. 
• Axile plantation. 
• Mucilage secreting glands present in plants. 
• Stellate hairs are present on vegetative parts of plants.

Plants of this family have sulphur contain mercapton compounds which are pungent in smell. Corolla is Cruciform, Stamens are Tetradynamous, Gynoecium is bicarpallery. syncarpous, ovary is unilocular which further divided it into two locules by false septum or replum. Parietal placentation. Fruit is siliqua or siliqula Examples: Brassica oleracea var botrytis, Brassica oleracea var capitata. Brassica oleracea var gongylodes.

It has been divided into 3 sub-families on the basis of characters of corolla (aestivation), androecium and floral characters.

Androecium has indefinite stamens.They are monadelphous. Filaments of the stamens are united to form a long staminal tube or staminal column which encloses the style. Basal part of the staminal tube is fused with the petals; thus stamens are epipetalous Anthers are monothecous. reniform. dorsifixed and extrorse.

Actinomorphic, Valvate aestivation. Stamens are indefinite and free.

The answer is Glycyrrhiza glabra

In Leguminosae ovary is monocarpellary marginal placentation whicle in Liliaceae tricarpellary and axilc placentation.

The answer is (c) Butea

Correct option (D) The hormone produced by P and Q stimulates the proliferation of the endometrial lining of the uterine wall.  

Explanation:

ln the given figure of human ovary, P is primary follicle, Q is mature Graafian follicle, T is secondary oocyte, R is corpus luteum and S is corpus albicans.

Secondary oocyte (T) is formed only after puberty in a monthly cycle (one in each cycle). The corpus luteum (R) is developed under the effect of luteinising hormone from pituitary. The hormone progesterone secreted by it, maintains the uterine endothelium and stimulates secretion of watery mucus from uterine glands. Corpus albicans (S) secretes no hormone. P (primary follicle) and Q (Graafian follicle) secrete estrogen which stimulates the proliferation of endometrial lining of the uterine wall.

(A) (a) - (iii), (b) - (iv), (c) - (i), (d) - (ii) 

Correct option (D) S  

Explanation:

There are two types of cells in an organism-somatic cells (2n) and germ cells (n). Somatic cell samples give rise to new organisms that are genetically identical to their parents because in somatic cells, crossing over does not occur and hence variations are not produced. Germ cells produce variations. Thus, cell samples taken from part S (thalamus) of plant X will give rise to new plants that are genetically identical to plant X. Other parts P, Q and R have germ cells.

Correct option   (D) Megaspore 

Explanation:

Megaspore is a haploid cell that is formed by meiosis in the megaspore mother cell. lt is the first cell of female gametophyte.

Correct option   (A)

Explanation:

Gestation period in human female is of 280 days. Asexual reproduction is a common means of rapidly increasing organisms under favourable conditions.

Correct option is D) Sunflower

(a) Blood platelets and blood coagulation

(b) Neutrophils and phagocytosis

(c) Erythrocytes and transportation of gases

(d) Lymphocytes and Produce antibodies

(e) Bone marrow and destruction of old and weak RBC's/production of RBCs and WBCs.

Pulmonary vein

Pulmonary artery and pulmonary vein.

The average values of blood pressure in a normal adult human are 100-140 mm for systolic pressure and 60-80 mm for diastolic pressure.

Blood flows twice in the heart before it completes one full round. The full round thus includes pulmonary and systemic circulation. In pulmonary circulation, blood enters the lungs through pulmonary arteries. Pulmonary veins collect the blood from the lungs and carry it back to the left 

In systemic circulation, blood from the left ventricle enters the aorta through which the blood is sent to the body parts. From the body parts blood is collected by veins and sent back to the heart. Therefore, the blood circulation in the human body is called double circulation.

In mammals the heart produces two separate circulations, the pulmonary to the lungs and systemic to the rest of the body. These two separate circulations are jointly called double circulation. From the right ventricle deoxygenated blood goes to lung for purification and comes back to left auricle through pulmonary vein after purification which is known as pulmonary circulation.

Distribution of blood from left ventricle to different parts of the body and back to hearts as deoxygenated blood is known as systemic circulation.

Double circulation means that the blood flows twice in the heart before it completes one full round-the short pulmonary (lung) circulation and the long systemic (general body) circulation. For this reason the blood circulation in human body is also called double circulation.

Complete the word relation Bronchus: cartilaginous rings Bronchiole no cartilaginous rings

Incident ray reflected ray and normal lie in the same plane. This plane is called the plane of reflection.

If In the reflection of the light angle of the incident (i), angle of reflection (r) are always equal.

Answer

Let AC be the broken part of the tree.

∴ Total height of the tree = AB+AC

In  right ΔABC,

cos 30° = BC/AC

⇒ √3/2 = 8/AC

⇒ AC = 16/√3

Also,

tan 30° = AB/BC

⇒ 1/√3 = AB/8

⇒ AB = 8/√3

Total height of the tree = AB+AC = 16/√3 + 8/√3 = 24/√3

1. Mr. Veeraiah, a master weaver

2. It requires a lot of patience.

3. They are special for the quality.

4. It depends on the yarn they use.

5. First, the yarn is boiled in the water, mixed with caustic soda, for a couple of hours and also bleached to make it suitable for dyeing.

Correct option is a. C₂

Correct option is c. F – H ... F 

Correct option is b. H₂O > HF > NH₃

Correct option is c. –0.75

Correct option is a. NH₃

1. Bulk modulus indicates the resistance of gases, liquids or solids to change their volume.

2. Materials with small bulk modulus and large compressibility are easier to compress.

Water has the highest specific heat capacity of 4.2Jg^-1°C^-1 and its temperature does not rise beyond 100°C. Thus, it can absorb large amount of heat from the working engine, which is then radiated out through radiator Thus, on low temperature the engine works efficiently.

The percentage marks obtained by students: 64 , 36 , 47 , 23 , 0 , 19 , 81 , 93 , 72 , 35 , 3 , 1 

Sum of marks = 64 + 36 + 47 + 23 + 0 + 19 + 81 + 93 + 72 + 35 + 3 + 1 

= 474 

Total students = 12 

Now, Mean marks = (Sum of marks ) / (Total students ) 

= \(\frac{474}{12}\)

= 39.5 

Mean Marks = 39.5

(i) Calorie: It is the quantity of heat required to raise the temperature of 1 gm of water by 1°C (more accurately the rise in temperature is taken from 14.5°C to 15.5°C). 

(ii) Kilo calorie: It is the quantity of heat required to raise the temperature of 1 kg of water by 1°C. It is equivalent to 1000 calories.

Heat capacity of a body = Mass of the body × Specific heat capacity of its substance.

The heat absorbed or liberated by a substance during its change of state at a constant temperature is called latent heat. Its S. I. unit is J/kg.