Biosciences – Botany and Zoology Study Material बिभाग ‘घ’

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Biosciences – Botany and Zoology Study Material बिभाग ‘घ’ on mahasarkar.co.in. This is the page where we are deal with Biosciences – Botany and Zoology Study Material For Maharashtra Recruitment Exam. Every questions come from various source i.e. Study of life; cell-the basic unit of life; Classificaton of Living organisams; Organization of Living Body; Nutrition; Respiration; The Transport System; Excretion Metabolic wastes; Biocommunication; Muscle Movement Etc. यह पेज ओह सब स्टूडेंट के लिए है, जो नौकरी की तलाश में हैं और भारती परिक्षा दिने के लिए इच्छुक हैं।

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Biosciences – Botany and Zoology Study Material बिभाग ‘घ’

  1. Population refers to

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

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

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

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

Ans:- (4) Individuals of a particular species living in an area

  1. An ecosystem consists of

(1) A living community and its environment

(2) All the plants and animals of an area

(3) Carnivores and herbivores of an area

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

Ans:- (1) A living community and its environment

  1. Nitrification refers to

(1) Fixation of molecular nitrogen

(2) Oxidation of ammonia into nitrate

(3) Reduction of nitrate into molecular nitrogen

(4) Reduction of nitrate into molecular nitrogen

Ans:- (2) Oxidation of ammonia into nitrate

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

(1) By digging canals

(2) Through afforestation

(3) Through artificial rains

(4) By constructing water reservoirs

Ans:- (2) Through afforestation

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

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

(2) It maintains the nitrogen cycle of the earth

(3) It maintains the temperature of the earth

(4) It protect them from excessive ultra violate rays of the sun

Ans:- (4) It protect them from excessive ultra violate rays of the sun

  1. Aquaculture is the

(1) Water portion of the biosphere

(2) Loss of water by plants

(3) Use of water for farming

(4) Water content of organisms

Ans:- (3) Use of water for farming

  1. The earliest human who practiced crude surgery, kept records, created some art, and conducted formal burial rites were

(1) Early Homo sapiens

(2) Cro-Magnon man

(3) Homo erectus

(4) Neanderthal man

Ans:- (4) Neanderthal man

  1. It is said that the spiders spiders of the Himalayas are native to the highest territory-higher than any animal of earth. Spiders are carnivorous. Therefore they must thrive by

(1) Becoming herbivorous

(2) Eating insects blown up the mountains by winds

(3) Adapting to the manufacture of organic materials from inorganic substances

(4) Making daily forays to lower altitudes

Ans:- (2) Eating insects blown up the mountains by winds

  1. In a very hot climate, one is likely to find

(1) Organisms capable of hibernation

(2) Organisms capable of aestivation

(3) Coke machines

(4) Shorts-tailed deer

Ans:- (2) Organisms capable of aestivation

  1. Snakes and vultures are eating rats in a field. If wild dogs are let into the field the immediate result will be a

(1) Decrease in the number of snakes

(2) Decrease in the number of vultures

(2) Decrease in the number of rats

(4) Increase in the number of snakes

Ans:- (2) Decrease in the number of vultures

  1. Which of the following cells/structures are excretory in function?

(a) Malpighian tubules

(b) Flame cells

(c) Amoeboid coelomocytes

(d) Chlorogogen cells

(1) 1, 2

(2) 2, 3

(3) 1, 2, 3

(4) 1, 2, 3, 4

Ans:- (4) 1, 2, 3, 4

  1. The Lamarckian theory of organic evolution is usually known as the theory of

(1) Natural selection

(2) Inheritance of acquired characters

(3) Continuity of germplasm

(4) Descent with change

Ans:- (2) Inheritance of acquired characters

  1. Which of the following is a famous agricultural scientist who has been awarded a Nobel Peace prize?

(1) S Chandrasekhar

(2) Hargobind Khorana

(3) Norman Borlaug

(4) M S Swaminathan

Ans:- (3) Norman Borlaug

  1. An antibiotic is

(1) A chemical compound produced by a living organism that inhibits the growth of other organisms

(2) A compound synthesized by a living organism that inhibits the growth of microbes

(3) A synthetic compound inhibiting the growth of other organisms

(4) A synthetic compound inhibiting the growth of bacteria

Ans:- (2) A compound synthesized by a living organism that inhibits the growth of microbes

  1. Seeds can best be preserved in

(1) Cool and dry conditions

(2) Cool and wet conditions

(3) Hot and cool dry conditions

(4) Hot and wet conditions

Ans:- (1) Cool and dry conditions

  1. Which of the following states is the largest producer of coffee in India?

(1) Karnataka

(2) Kerala

(3) Orissa

(4) West Bengal

Ans:- (1) Karnataka

  1. Tea plants thrive best in

(1) Acidic soils with average rainfall above 150 cm and temperature between 20-300C

(2) Alkaline soils with average rainfall above 150 cm and temperature between 20-300C

(3) Alkaline soils with rainfall above 150 cm and temperature between 15-200C

(4) None of these

Ans:- (1) Acidic soils with average rainfall above 150 cm and temperature between 20-300C

  1. The International Rice Research Institute is based in

(1) Australia

(2) Mexico

(3) Nigeria

(4) Philippines

Ans:- (4) Philippines

  1. Turpentine is obtained from

(1) Crude petroleum

(2) Deodar

(3) Pine

(4) Oak

Ans:- (1) Crude petroleum

  1. Some plants feed upon insects for their nitrogen requirements. They are called insectivorous plants. Which of the following is such a plants?

(1) Bladderwort

(2) Hornwort

(3) Liverwort

(4) Spiderwort

Ans:-

  1. The Red Sea derivers its name from the

(1) Profuse growth of a red flowered plant

(2) Red bloom caused by a blue-green alga

(3) Red bloom caused by a red alga

(4) Red coloured effluents deposited in it

Ans:- (2) Red bloom caused by a blue-green alga

  1. Cotton fibre is obtained from the

(1) Stem

(2) Leaf

(3) Fruit

(4) Seed

Ans:- (4) Seed

  1. The smallest living cell is that of a

(1) Bacterium

(2) Bread mold

(3) Mycoplasma

(4) Virus

Ans:- (3) Mycoplasma

  1. A prokaryote is

(1) A single-celled organism

(2) A hard and stone fruit

(3) An organism lacking membrane-bound nucleus in its cells

(4) The most primitive multicellular organism

Ans:- (3) An organism lacking membrane-bound nucleus in its cells

  1. The tissue that plays a leading role in the elongation of many bones is

(1) Areolar tissue

(2) Cartilage

(3) Spongy bone

(4) Fibroelastic tissue

Ans:- (2) Cartilage

  1. The average ratio of white blood corpuscles to red blood corpuscles in the adult humans is

(1) 1 : 500

(2) 1 : 700

(3) 1 : 1000

(4) 1 : 1200

Ans:- (2) 1 : 700

  1. Labourers who do hard manual work develop thick skin on their palms and soles which is due to

(1) Thick epidermis

(2) Thick dermis

(3) Thick subcutaneous tissue

(4) All of these

Ans:- (1) Thick epidermis

  1. Leather is a derivative of

(1) Dermis only

(2) Both dermis and epidermis

(3) Both dermis subcutaneous fatty tissue

(4) Epidermis, dermis and subcutaneous tissue

Ans:- (1) Dermis only

  1. Enamel covers the

(1) Crown of the tooth

(2) Dentin on all sides

(3) Cementum

(4) Cementum and party dentin

Ans:- (1) Crown of the tooth

  1. The digestive products of herbage consisting of cellulose in sheep are

(1) Glucose

(2) Maltose

(3) Dextrins, maltose and glucose

(4) Fatty acids

Ans:- (4) Fatty acids

  1. Premature fruit fall results in significant loss of yield in some cases. This can be stopped by

(1) Adequate irrigation

(2) Auxin sprays

(3) Increasing fertilizer application

(4) Increasing availability of minerals

Ans:- (2) Auxin sprays

  1. Heart murmur is due to a

(1) Non-functional atrium

(2) Leaky value

(3) Coronary thrombosis

(4) Small aorta

Ans:- (2) Leaky value

  1. We lose consciousness if blood flow to the brain is cut off for more than

(1) 2 sec

(2) 5 sec

(3) 15 to 20 sec

(4) 5 min

Ans:- (2) 5 sec

  1. Which of the following plants hormone is involved in bolting of the rosette plants?

(1) Auxin

(2) Gibberellin

(3) Ethylene

(4) Zeatin

Ans:- (2) Gibberellin

  1. Freshly passed urine has hard any smell but when it is allowed to stand, it develops a strong ammoniacal odour owing to

(1) Conversion of urea to ammonia via urea cycle

(2) Conversion of urea acid and urea to ammonia

(3)  Conversion of uric acid and urea to ammonia

(4) Conversion of uric acid, urea and creatinine to ammonia

Ans:- (2) Conversion of urea acid and urea to ammonia

  1. The tests normally descend into the scrotum about

(1) 6 months into pregnancy

(2) The time of birth

(3) The age of 3 months

(4) The time of puberty

Ans:- (2) The time of birth

  1. Menopause usually occurs between

(1) 30 to 35 years

(2) 35 to 40 years

(3) 40 to 45 years

(4) 45 to 50 years

Ans:- (4) 45 to 50 years

  1. Most fish do not sink in water due to the presence of

(1) air sinuses

(2) Buoyant scales on the body

(3) Swim bladder

(4) Swimmerets

Ans:- (3) Swim bladder

  1. Which of the following animals have flippers?

(1) Tortoise

(2) Turtle

(3) Water Snake

(4) Tortoise and Turtle

Ans:- (2) Turtle

  1. The mammal that lays eggs is

(1) Kangaroo

(2) Duck-billed platypus

(3) Opossum

(4) Otter

Ans:- (2) Duck-billed platypus

  1. Bacteriophages are

(1) A kind of soil bacteria

(2) Bacteria growing in phases

(3) Parasitic bacteria infecting man

(4) Viruses infecting bacteria

Ans:- (4) Viruses infecting bacteria

  1. The scientist who first isolated a virus in pure crystalline form was awarded a Nobel prize for his contributing. Ehich of the following was this scientist?

(1) D Iwanowski

(2) Hargobind Khorana

(3) Watson and Crick

(4) W M Stanley

Ans:- (4) W M Stanley

  1. A bacterium divides every minute and takes an hour to fill a cup. How much time will it take to fill half the cup?

(1) 15 minutes

(2) 30 minutes

(3) 59 minutes

(4) 60 minutes

Ans:- (3) 59 minutes

  1. Gene, the basic unit of heredity, was first synthesized in the laboratory by

(1) Arthur Kornberg

(2) Hargobind Khorana

(3) Gregor Mendel

(4) Watson and Crick

Ans:- (1) Arthur Kornberg

  1. Gregor Mendel is often referred to as the Father of Genetics since he first enunciated the Principles of Heredity. His experimental material was

(1) Fruit fly

(2) Bread mould

(3) Pea plant

(4) Rhesus monkey

Ans:- (3) Pea plant

  1. Which of the following human disease/s is /are hereditary in nature?

(1) Hemophilia

(2) Phenylketonuria

(3) Sickle-cell anaemia

(4) All the above

Ans:- (4) All the above

  1. That some human diseases are genetically controlled was first established by

(1) Gregor Mendel

(2) A E Garrod

(3) Watson and Crick

(4) William Bateson

Ans:- (2) A E Garrod

  1. Which of the following human disease/s is/are controlled by heredity?

(1) Alkaptonuria

(2) Leukemia

(3) Anaemia

(4) All the above

Ans:- (1) Alkaptonuria

  1. If an old tree is out is cut transversely, distinct growth rings are visible and it is possible to calculate the age of a tree by counting such rings are most prominent in

(1) Polar plants

(2) Tropical plants

(3) Sub-tropical plants

(4) Temperature plants

Ans:- (4) Temperature plants

  1. In some arctic and alpine regions, the snow appears red. This ‘red snow’ phenomenon is caused by

(1) Fluorescence

(2) Growth of a red-flowered plant

(3) Growth of an alga

(4) Reflection of red light

Ans:- (3) Growth of an alga.

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