Explore topic-wise InterviewSolutions in Current Affairs.

The coloured light that refracts most while passing through a prism is Violet.

• Atrocities against women.
• Crime such as denial of the right to education.
• Different wages for the same job.
• Denial of opportunities for proving their abilities.

The amount of light entering the eye is controlled by the iris. It automatically adjusts the size of the pupil according to the intensity of light received by the eye. If the amount of light received by the eye is large, then the iris contracts the pupil and reduces the amount of light entering the eye. If the amount of light received by the eye is small, then the iris expands the pupil so that more light may enter the eye. 

• Increase crimes
• Cause mental and physical problems
• Cause family problems
• Cause economic crisis
• Cause accidents, deaths etc.

The crimes done by children of below fourteen years of age are called juvenile crimes. They are called juvenile offenders.

The crimes done by children of below fourteen years of age are called juvenile crimes.

Lack of shelter is the situation in which an individual is not able to secure and keep a suitable house.

• Many of the social problems are interrelated.
• The consequences of social problems have common features.
• Social problems change according to the changing times.
• Joint effort and actions are necessary to solve social problems.

Crimes among children have become a big social problem. The crimes done by children of below fourteen years of age are called juvenile crimes. They are called juvenile offenders. Different types of such crimes appear in the newspapers. There are many reasons for children to engage in crimes.

1. Defects in family relations

2. Use of intoxicants

3. Misuse of media

4. Deterioration of social values

Problems, whether individual or common that exist for a long time affecting the society, are called social problems. Those problems which affect the society directly or indirectly are considered as social problems.

The amount of light entering the human eye is controlled by Pupil.

The child line is an agency under the Ministry of Women and Child Development to identify the problems and difficulties of children and to protect them.

(a) The amount of light entering the eyes of a human is controlled by iris and pupil.

The iris automatically adjusts the size of the pupil according to the intensity of light received by the eye.

If the amount of light received by the eye is large (as during the daytime), then the iris contracts the pupil (makes the pupil small) and reduces the amount of light entering the eye. On the other hand, if the amount of light received by the eye is small (as in a dark room or during night), the iris expands the pupil (makes the pupil large) so that more light may enter the eyes. Thus, the iris regulates (or controls) the amount of light entering the eye by changing the size of the pupil.

(c) About 35 million people in the developing world are blind and most of them can be cured. About 4.5 million people with corneal blindness can be cured through corneal transplantation of donated eyes. Out of these 4.5 million, 60% are children below the age of 12. So, if we have got the gift of vision, why not pass it on to somebody who does not have it. People can be motivated to donate their eyes
after death by telling them about this good deed. They can be told that they will live in someone else body even after their death. For this awareness camps can be organised to tell the people about the benefits they will give to the blind.

The field lines inside the solenoid are in the form of parallel straight lines. This indicates that the magnetic field is the same at all points inside the solenoid. Thus, answer (iv) is correct.

(i) Cornea: Refraction of the light rays falling on the eye.
(ii) Iris: To control the size of the pupil.
(iii) Pupil: To regulate and control the amount of light entering the eye.
(iv) Retina: To act as a screen to obtain the image of object and generate electrical signals rvhich are sent to the brain via optic nerves. 

We can contribute by participating in different ways of motivating people for the noble cause of eye donation such as, street play, banners, poster, door to door campaign, etc.
Obiectives of organising such campaigns:
(i) To develop the habit of group work,
(ii) To work for a common cause,
(iii) To understand social issues and problems.

Inherited traits are characters that are transferred from one generation to another.

Acquired traits, on the other hand, are developed during the lifetime of an individual and cannot usually, be transferred to future generations.

Speciation is the evolution of reproductive isolation among once interbreeding populations. i.e., the development of one or more species from an existing species.

Sex chromosome is either a pair of chromosomes, usually designated X or Y, in the germ cells of most animals, that combine to determine the sex and sex-linked characteristics of an individual.

(C) minorities

I prefer the first sentence. 

The reasons are – 

a) 1. All democratic countries ensure certain rights to its citizens. 

2. Rights are reasonable claims of the people. 

3. Democratic governments strive to preserve equal ground for all.

b) 1. During the early days of modern history, all despotic governments granted certain rights to the people. That was done under great pressure. 

2. Therefore every country that gives rights to its citizens is not a democratic.

c) The rights are so important that they are also expressed by many democratic countries and codified by the UNO and find first place in the universal declaration of human rights. Hence it is necessary for democracy to give rights.

b) Freedom to participate in armed revolution

(d) not be seen at all.

(a) the apparent depth of the points close to the edge are nearer the surface of the water compared to the points away from the edge. 
(b) the angle subtended by the image of the object at the eye is smaller than the actual angle subtended by the object in air. 
(c) some of the points of the object far away from the edge may not be visible because of total internal reflection. 

When two parents are involved in reproduction, the method is called sexual reproduction. The male and female gametes fuse during fertilization to produce zygote. The zygote subsequently develops into an embryo which further develops into a new individual.

Sexual reproduction is a process which involves the production of seeds in plants. It requires two parents. Most plants reproduce sexually with the help of flowers. Through this process new organisms are produced which are almost similar to their parents.

Male flower: 

The flowers which has stamens (androecium) only are male flowers. 

Female flower: 

The flowers which has pistil (gynoecium) only are female flowers.

 Vegetative propagation : It is the ability of a plant to produce new plants from vegetative parts of the plant like roots, stems, leaves and buds Vegetative propogation is divided into two types.

1. Natural Vegetative propagation: This type of vegetative propagation occurs easily in nature and involves simple vegetative parts. 

2. Artificial Vegetative propagation : This type of vegetative propogation is performed manually and generally occurs in laboratory conditions. 

3. Budding : It involves the formation of a new individual from a bulb-like projection called a bud. The bud grows and gets detached from the parent to form a new individual. It is commonly observed in yeast. 

4. Fragmentation: It is a form of asexual reproduction where a new organism is formed from the fragments of the parent body. It is the only mode of asexual reproduction in spirogyara. 

5. Spore formation: Many non – flowering plants reproduce through spore formation, spore are tiny cells protected by a thick wall. Fungi such as bread moulds reproduce asexually using this method.

Complete flowers: 

A flower that has four or more whorls is called a complete flower. 

eg: 

Datura, ipomea, hibiscus… etc. . 

Incomplete flowers: 

A flower which has either stamens or pistil is called unisexual flower. 

eg: 

Cucumber, bottlegourd, bittergourd etc.

Binary fission, budding, fragmentation, spore formation etc.

Heart and blood vessels together form the circulatory System. Its main function is to transport the materials.

The correct answer is D) Construction.

Flowers which do not have any one of the four whorls are called Incomplete flowers.

Blood Consists of Plasma (fluid) RBC, WBC and Platelets. Plasma is a liquid mainly contains Water. RBC means red blood cells which contains Haemoglobin a red pigment which gives red colour to blood and binds with oxygen and transports it to all parts of the body cells. WBC means white blood cells which fight against germs that may enter our body Platelets are the types of cells present in the blood which help in clotting of blood.

Blood is a liquid, which has cells of various kinds suspended in it. Main components of blood are:
1. Plasma: The fluid part of the blood is called plasma.
2. RBC: One type of cells are the red blood cells (RBC) which contain a red pigment called haemoglobin.
3. WBC: The blood also has white blood cells (WBC) which fight against germs that may enter our body.
4. Platelets: The clotting of blood is caused by another type of cells in the blood, called platelets.

Hibiscus, Datura

The main components of blood are : 

(a) Red blood cells: (RBCs) Red blood cells are the most abundant cells in the blood these cells contain a red pigment called haemoglobin. It is the haemoglobin which carries oxygen and transports it to all parts of the body. 

(b) White blood cells (WBCs) : These cells can change their shape and help body in fighting against diseases thus, they constitute the immune system of the body.

(c) Platelets: they help in blood clot formation thus prevents excessive bleeding from wounds. 

(d) Plasma : All the blood cells are present in plasma. It also contains dissolved nutrients.

Transpiration serves very important function in plants. Transpiration creates the transpiration pull, which is responsible for the rise of water to great heights in tall plants and other trees.

There are two types of blood vessels in human body. They are arteries and Veins. Arteries carry oxygen – rich blood from the heart to all parts of the body. Veins are theves- sels which carry carbon dioxide – rich blood from all parts of the body back to the heart.

1. All flowers do not have the same parts. 

2. The stamens are the male reproductive part and the Pistil is the female reproductive part.. 

3. The flowers which contain either only the pistil or only the stamens are called unisexual flowers. 

Eg: 

Corn, papaya, cucumber … etc. 

4. The flowers which contain both stamens and pistil are called bisexual flowers. 

Eg: 

Mustard, rose, petunia …. etc. 

5. A flower that has four or more whorls is called a complete flower. 

Eg: 

Datura, ipomea, Hibiscus … etc. 

6. A flower in which any of these four whorls is missing is an incomplete flower. 

Eg:

cucumber, bottle gourd, papaya.

Transpiration is the evaporation of water from the plants. The water evaporates through the stomata present on the surface of the leaves. 

It is called a necessary evil because. 

i. It helps in lowering the temperature of plant thus prevents heat injury to the plant. 

ii. Due to transpirational pull water rises in higher plants. , 

iii. It also causes loss of water absorbed by plants.

Arteries are further divided into smaller vessels extremely thin tubes called Capillaries. These Capillaries join to form veins which empty into the heart.

The numerous pores under the surface of leaf are called stomata. Transpiration and exchange of gases (carbon dioxide and oxygen) are the main functions of stomata.

The elephant is the only mammal whose pleural space is absent. The lungs are more elastic and are connected by connecting tissues to the thorax and diaphragm. Its wide capacity of air filling is 310 litres for one to breathe. The size of the lungs is always proportionate to the size of the body of all terrestrial animals whose respiration is pulmonary. The elasticity of the elephant lungs is more convenient to the movement of the body. The on lungs when the trunk raises up to the maximum height.

The heart is the pumping organ which pumps blood through which it transport substances. The rhythemic contraction and relaxion of various chambers of the heart maintain circulation of blood and transport of substances to the different parts of the body.

The numerous pores under the surface of leaf are called stomata. 

Functions of stomata : 

a. Stomata helps in the exchange of gases. 

b. Evaporation of water from the leaf surface occurs through stomata.

1. Breathing is a part of Respiration. 

2. Yeast is an anaerobe. 

3. Muscle cramps due to accumulation of lactic acid. 

4. Manufacture of wine and beer Yeast is used. 

5. The number of times a person breathes in a minute is termed as the breathing rate. 

6. An adult human being at rest breathes 15 – 18 times in a minute.

i – b, 

ii – d, 

iii – a, 

iv – c

The air we breathe fills our lungs that are located in our chest.