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(a) The valves in the veins permit one – way flow of blood only. 

(b) It involves the breakdown of complex molecules into simple ones by oxygen. 

(c) Anaerobic respiration is the incomplete breakdown of glucose in the absence of oxygen. So it produces less energy. 

(d) Passage of oxygen from alveolar air to blood and passage of carbon dioxide from blood to alveolar air. 

(e) For providing support preventing collapse of trachea and allowing for uninterrupted flow of air. 

(1) Glandular epithelium

The story ‘Old Man at the Bridge’ deals with the themes of resignation, depression and impending death. This theme is reflected in a conversation between a soldier and an old man who had to leave his hometown during the Spanish Civil War. The old man is gripped by panic and anxiety. He is a fatalistic hero of the story who is resigned to his fate as a casualty of war. When the soldier who is concerned about the safety of the old man tells him to walk up the road and catch a ride on the truck to Barcelona, he tells him that he is an old man of 76 and is too tired to go further. So he resigns himself to his fate. Then the soldier reflects that he is sure to be killed once the Fascists advance to the bridge across the Ebro. His life is prolonged by the fact that the day is overcast and the Fascists cannot launch their planes. His mind is eased by the fact that cats can look after themselves, but aside from that the soldier says that nothing can be done for him and his death seems certain.

The soldier seems more affected by the inevitability of the man’s probable fate than by the old man. On the other hand, the old man is worried about the fate of his animals. He can’t get rid of the thought of safety of his animals. This gives him depression. When the soldier tells him that it is best not to think about his animals, he is unable to stop thinking about them. This leads him to depression.

At the close of the story the narrator bemoans the old man’s impending death. He asks him to walk and catch a ride on the truck to Barcelona, but the old man expresses his inability to walk due to fatigue. The soldier begins to feel pity for him and says, “There was nothing to do about him.”

line of latitude 23.5 degrees north of the Equator. line of latitude 23.5 degrees south of the Equator. region generally located between the Tropic of Cancer (23 1/2 degrees north of the Equator) and the Tropic of Capricorn (23 1/2 degrees south of the Equator).

शामनाथ को पत्नी की बात भी माननी पड़ती है और माँ का ख्याल भी रखना पड़ता है। पत्नी की बात सुनकर कभी-कभी माँ का अनादर भी कर बैठता है, परन्तु माँ की सहनशीलता के सामने आखिर उसको नतमस्तक होना पड़ता है। अपनी नौकरी व तरक्की के लिए अंग्रेज चीफ़ की खुशामद करना जरूरी होता है। माँ के कारण चीफ़ साहब बहुत खुश होते हैं, तो वह माँ का ‘आलिंगन कर अपने आपको धन्य मानता है।

The correct answer is Khan Abdul Ghaffar khan.

• The first two Non-Indians who receive the Bharat Ratna are -Khan Abdul Ghaffar Khan(1987) and Nelson Mandela (1990).
• There is no written provision that Bharat Ratna should be awarded to Indian citizens only.
• The award had been awarded to a naturalized Indian citizen to Mother Teresa (1980).

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• The original name of Mother Teresa was Agnes Gonxha Bojaxhiu.
• There will be no recipient of the Bharat Ratna in 2021. 
• Pranab Mukherjee, Nanaji Deshmukh & Bhupen Hazarika Awarded the “Jewel of India”, known as Bharat Ratna is the highest civilian award of the country.

• The provision of Bharat Ratna was introduced in 1954.
• The first-ever Indian to receive this award was the famous scientist, Chandrasekhara Venkata Raman.

Characteristic of urbanization during the medieval period in India were:

In the early medieval period, the rate of urbanisation was slow due to unstable political conditions. Only fortress towns under the patronage of chieftains and petty rulers could grow.
Those towns also developed which were along the main routes of travel, and by the river-side had trade in food grains, cloth, swords, carpets, perfumes and several other handicraft articles.
It was only under the rule of Akbar that urban life was reconstituted and redeveloped. All centres – ‘dasturs’ (districts) as well as ‘parganas’ (tehsils) beside capitals in nature were also ‘garrison towns’ where armies were invariably stationed for protection.
Urban centres in the medieval period were surrounded by agricultural land. Farmers and labourers usually resided near or outside the town limit. The areas within the walls of a town were inhabited by artisans of different castes engaged in handicrafts and other works.

Rural economy:

1. Rural economy is mainly agrarian in nature.    

2. The occupation is mainly based on agriculture, pastoralism and allied activities.  

3. Since rural economy is agrarian, it is dependent on natural resources.    

4. Occupations are not specialised. Unlike urban economy, division of labour is not seen. 

Urban economy:

1. Urban economy is based on markets and financial system.
2. The occupation is mainly based on manufacturing, trade and commerce, professional services.
3. Since markets are profit driven, the profit motive guides most activities.
4. Occupations are more specialised. There is wide spread division of labour based on skills and knowledge.

A basic definition of rural-urban linkages is that they consist of flows (of goods, people, information, finance, waste, information, social relations) across space, linking rural and urban areas. Perhaps a less descriptive definition is of the functional links between sectors (agriculture, industry and services).

Type 1 drivers provide a bridge between Java and ODBC. 

Types 2-4 drivers are written entirely in Java, but differ as to how they connect to the DBMS. 

Type 2 drivers rely on the DBMS product for intermachine communication, if any. 

Type 3 drivers translate JDBC calls into a DBMS-independent network protocol. 

Type 4 drivers translate JDBC calls into a DBMS dependent network protocol.

An applet is a compiled Java bytecode program that is transmitted to a browser via HTTP and is invoked using the HTTP protocol on the user's workstation. A servlet is a Java program that is invoked on the server to respond to HTTP requests.

A Java bean is a Java class that has the following three properties. 

(1) There are no public instance variables. 

(2) All persistent values are accessed using methods named getxxx and setxxx. 

(3) The bean class must either have no constructors or it must have one explicitly defined zero-argument constructor.

1. Load the driver. 

2. Establish a connection to the database. 

3. Create a statement. 

4. Do something with the statement.

Phycobilins exists in two form. They are: 

1. Phycocyanin found in Cyanobacteria. 

2. Phycoerythrin found in red algae.

(A) Excessive intake of fluorine

(A) Drinking water containing less than 0.2 ppm of fluorine

(C) Drinking water containing greater than 1.2 ppm of fluroine

(D) Vitamin E

Upper safe limit of fluorine in water is 1.2 ppm.

(C) Hyperparathyroidism

(C) Pyridoxine responsive

Correct option (C) Ig M

The smallest immunoglobulin is  Ig G.

[Hint : To confirm beforehand that the patient is not allergic to penicillin.]

The human ear is divided into three mains parts: the external ear, the middle ear and the internal ear.

The structures of the human auditory sensitivity are the ears (external, middle and internal), the vestibulocochlear nerves and the auditory areas of the brain (located in the temporal lobes of both hemispheres). 

A. False Perilymph is the fluid outside the membranous labyrinth. 

B. False Their adequate stimulus is angular not linear acceleration or deceleration. 

C. False A blindfold person is unaware of any sensation when rotated at constant velocity, e.g. as on the earth! 

D. False Gravity produces linear acceleration. 

E. True During angular acceleration or deceleration, the inertia of the endolymph causes it to move relative to the hair cells on the walls of the semicircular canals. The resulting movement of the hair cells generates afferent impulses that travel in the vestibular nerves.

The acoustic transmission from the external to the middle ear (and to the internal ear too) is entirely mechanical. The vibration of the tympanic membrane triggers the vibration of the hammer that then causes the incus to vibrate. The incus then causes the stapes to vibrate.

True: During angular acceleration or deceleration, the inertia of the endolymph causes it to move relative to the hair cells on the walls of the semicircular canals. The resulting movement of the hair cells generates afferent impulses that travel in the vestibular nerves.

Correct option (C) Hypersecretion of GH

Explanation:

Hypersecretion of GH in adults results in the increase in thickness of lower jaw and disproportionate overgrowth of bones of the face, hands and feet, this condition is known as Acromegaly. 

A. False Somatostatin inhibits growth hormone secretion. 

B. True This is the basis of a test of pituitary function. 

C. True Prolactin and growth hormone are similar peptides. 

D. True It stimulates growth of most tissues. 

E. True These peptides mediate general stimulation of growth.

Option : B. Transpiration

(i) 'S' and 'G₁' phases.

(ii) 'S' phase.

1. Sometimes urine is not excreted, what are the reasons for it ? 

2. Why do stones form in the kidney ? 

3. Which type of food is preferrable to avoid formation of stones in the kidney ? 

4. What is the relation between amount of water taken and functioning of kidney ?

(1) Latex is used in rubber. Tannins are used in leather industry. 

(2) Latex - Heavea braziliensis (Rubber Plant); Tannins - Cassia, Acacia

(1) Latex used in rubber and Tannins used in leather industry. 

(2) Latex - Heavea braziliensis (Rubber Plant) Tannins – Cassia, Acacia.

Correct option is D) tongue

Correct option is D) do / your

Correct option is C) playing