Explore topic-wise InterviewSolutions in Current Affairs.

(c) co extinction

(a) overexploitation

When a species becomes extinct, the plant and animal species associated with it also become extinct. This is called coextinction.

(c) joint forest management

Answer is (b) Clarias

(c) Alien species invansion

Exotic species are defined as species that have been introduced from another geographic region to an area outside its natural range. 

For example, 

i. Parthenium, Lantana and Eichhornia are the exotic species of plants that have invaded the native species of India and caused environmental damage. 

ii. Introduction of African catfish Clarias gariepinus for aquaculture purpose is posing threat to many indigenous catfish. 

iii. Nile perch introduced into lake Victoria in East Africa led to the extinction of cichlid fish.

(a) Nilgiri Biosphere Reserve

Seeds of different genetic strains of commercially important plants and other plants can be kept for a long period.

Answer is Eichornia

(d) Switzerland

(b) afforestation

The Nile Perch introduced in lake Victora in East Africa led eventually to the extinction of more than 200 species of Ci child sh in the lake. African cat sh (Clarias gariepinus) for aquaculture purpose is posing threat to the indigenous catfishes in our rivers.

Invasive weed species Eicchornia (water hyacinth). Parthenium (carrot grass). Lantana have posed a threat to our native species.

(c) Large biomes will become deserts

(c) gene bank

1. Cryopreservation 

2. In ex situ approach threatened animals/ plants/ gametes/ seeds are taken from their natural habitat and placed in special condition.

Correct Answer is: (c) idioblasts

Technique for herd improvement by successful production of hybrids. 

(i) Hormone(FSH) are administered to the cow for inducing follicular maturation and super ovulation. 

(ii) Cow produces 6-8 eggs instead of one egg & is either mated with elite bull or artificially inseminated. 

(iii) Fertilised egg at 8-32 cell stage are recovered non-surgically & transferred to surrogate mother. 

(iv) Done in cattle, sheep, rabbits etc.

Correct option is (C) Elton Mayo

The various thoughts of management have been developed based on various researches, studies and results in the field of management. In these thoughts many management gurus have represented different principle by separate opinions. Hence, so many branches and sub-branches have developed. It is called thoughts and approaches of management.

The process in which the leucocytes or white blood cells squeeze out through the walls of blood capillaries at the site of injury to fight against pathogens.

The passage of White Blood Corpuscles through unruptured wall of blood vessels is known as diapedesis. It also helps in engulfing the germs and also protects the body from getting infected.

The thoughts of management presented till the end of 19th Century are known as thoughts of classical theory. The main promoters of thoughts of classical theory are Frederick Taylor, Max Weber, Gilbreath, Henry Gantt and Henry Fayol. In the thoughts of classical theory, contribution of Frederick Taylor and Henry Fayol is important. Frederick Taylor has presented Principles of Scientific Management. Henry Fayol contributed significantly by presenting General Principles of Management.

Correct answer is (a) 1

Correct answer is (c) \(\frac{1}{2}\)

Center of mass of resulting portion lies at R/6 from the center of the original disc in a direction opposite to the center of the cut out portion.

(b) 13MR² /32

A cut on the tree is made on the side facing the direction in which the tree is required to fall because that side will no longer be supported by the normal force from the bottom, therefore the gravitational force tries to rotate it. So the torque given by the gravity to the tree makes the tree fall on the side as anticipated.

A cat is able to land on its feet after a fall. This is based on law of conservation of angular ~ momentum. When the cat is about to fall, it curls its body to decrease the moment of inertia and increase its angular velocity. When it lands it stretches out its limbs. By which it increases its moment of inertia and inturn it decreases its angular velocity. Hence, the cat lands safety.

It will be about an axis passing through the center of the cube and connecting the opposite comers.

Correct answer is (a) Rω

Correct answer is  (d) Σm_ir²_i

Correct answer is (c) kgm²

(c) rotational inertia

No, it changes with the position of axis of rotation.

(a) variable quantity

Correct answer is (b) \(\frac{m_1}{m_2}=\frac{X_1}{X_2}\)

Correct answer is (a) MR²

Correct answer is (c) \(\frac{1}{2}\)MR²

(b) extremely small

 Correct answer is (c) \(\frac{Mb^2}{12}\)

(a) external forces acting on it

Correct answer is (a) \(\frac{Ma^2}{6}\)

(c) may be at rest or in uniform motion

(c) both gravitational as well as normal force

(a) increases

(a) the center point of the circle.

Correct answer is (a) clockwise

Correct answer is (a) clockwise

Correct answer is (d) L / 2