Biology - Questions and Answers, General Study (GK)

Home » General Study » Biology - Questions and Answers Objective Questions

Biology - Questions and AnswersPage 78

771.

An anaerobic species ofthe bacterium Clostridium causes a very serious disease in human populations. Which of the following disease is it ?

(a)Tuberculosis

(b)Botulism

(c)Typhoid

(d)Pneumonia

Comment

Answer is: B

772.

Reserpine is used to

(a)Alleviate pain

(b)Reduce high blood pressure

(c)Cure arthritis

(d)Increase blood pressure when it is low

Comment

Answer is: B

773.

Population refers to

(a)All the animals, including man, living in a particular area

(b)All the organisms, plants as well as animals, living in a particular area

(c)Individuals of a particular species living in an area

(d)All the human beings living in a particular area

Comment

Answer is: C

774.

An ecosystem consists of

(a)All the plants and animals of an area

(b)A living community and its environment

(c)Producers, consumers, and decomposers in a particular locality

(d)Carnivores and herbivores of an area

Comment

Answer is: B

775.

A prairie is

(a)A kind of plant

(b)A grassland without trees

(c)A locality in Australia

(d)A an area in South America on the side of river Amazon

Comment

Answer is: B

776.

Nitrification refers to

(a)Reduction of nitrate into ammonia

(b)Reduction of nitrate into molecular nitrogen

(c)Fixation of molecular nitrogen

(d)Oxidation of ammonia into nitrate

Comment

Answer is: D

777.

One way of checking the expansion of the Thar desert would be

(a)Through afforestation

(b)By digging canals

(c)By constructing water reservoirs

(d)Through artificial rains

Comment

Answer is: A

778.

The ozone layer of the earth is useful for living beings because

(a)It maintains the nitrogen cycle of the earth

(b)It serves as the source of oxygen by decomposing air

(c)It protects them from excessive ultraviolet rays of the sun

(d)It maintains the temperature of the earth

Comment

Answer is: C

779.

A hydrophyte is

(a)A marine animal

(b)A plant disease

(c)An aquatic plant

(d)A rootless plant

Comment

Answer is: C

780.

The functional unit in ecology is the

(a)Ecosystem

(b)Organism

(c)Population

(d)Biosphere

Comment

Answer is: A

Comments

No comment yet.

Biology - Questions and AnswersPage 78

Comments

Similar GS Topics

Top 10 List

Miscellaneous

Follow us on YouTube

Links

Social links

For Coaching Class/Schools

Subscribe for updates