Biosciences – Botany and Zoology Study Material बिभाग ‘ग’

Biosciences – Botany and Zoology Study Material बिभाग ‘ग’ Shared By Promodh Shirke

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Biosciences – Botany and Zoology Study Material बिभाग ‘ग’

  1. Which one the following plants has the largest flower

(1) Chrysanthemum

(2) Rafflesia

(3) Sunflower

(4) Zinnia

Ans:- (2) Rafflesia

  1. Pollination by insects is called

(1) Anemophily

(2) Entomophily

(3) Hydrophily

(4) Ornithophily

Ans:- (2) Entomophily

  1. The fusion of a male gamete with an egg is called

(1) Conjugation

(2) Copulation

(3) Syngamy

(4) Triple fusion

Ans:- (3) Syngamy

  1. A true fruit develops from the

(1) Anther

(2) Carpel

(3) Ovary

(4) Ovule

Ans:- (3) Ovary

  1. Fruit development without fertilization is called

(1) Apogamy

(2) Porogamy

(3) Polycarpy

(4) Parthenocarpy

Ans:- (4) Parthenocarpy

  1. When male and female flowers are borne on different plants, the plant is said to be

(1) Bisexual

(2) Dioecious

(3) Dichlamydeous

(4) Monoecious

Ans:- (4) Monoecious

  1. Jhum is

(1) A folk

(2) The name of a river valley

(3) A tribe

(4) A type of cultivation

Ans:- (2) The name of a river valley

  1. The age of a tree can be found by

(1) Measuring its height

(2) Measuring its diameter

(3) Analysis of its sap

(4) Counting the annual growth rings in a section of its stem

Ans:- (4) Counting the annual growth rings in a section of its stem

  1. Secondary growth in plants refers to the

(1) Development of Secondary organs after the plant attains maturity

(2) Development of flowers and fruits

(3) Growth in length and development of new branches after the plant starts flowering

(4) Formation of secondary tissues by the activity of lateral meristems

Ans:- (4) Formation of secondary tissues by the activity of lateral meristems

  1. Hydroponics is concerned with

(1) Growing plants without soil

(2) Growing plants without water but with atmospheric moisture

(3) The treatment of water technique

(4) The conservation of water technique

Ans:- (4) The conservation of water technique

  1. Which of the following plant hormones controls fruit ripening?

(1) Auxins

(2) Ethylene

(3) gibberellic acid

(4) Zeatin

Ans:- (1) Auxins

  1. A person who is associated with undue and extreme suspicion and a progressive tendency to regard whole and in a framework of delusions is indeed a victim of

(1) Paranoia

(2) Psychoneurosis

(3) Manic psychosis

(4) None of these

Ans:- (2) Psychoneurosis

  1. The National Bureau of Plant Genetic Resources is located at

(1) Bangalore

(2) Jammu

(3) New Delhi

(4) Shillong

Ans:- (1) Bangalore

  1. Which one of the following scientists is known as the father of modern genetics?

(1) Gregor Mendel

(2) Hargobind Khorana

(3) T.H. Morgan

(4) Charles Darwin

Ans:- (3) T.H. Morgan

  1. Genes control heredity in man and other organisms. This gene is

(1) A bead-like structure on the chromosomes

(2) A protein molecule

(3) A segment of RNA

(4) A segment of RNA or DNA

Ans:- (1) A bead-like structure on the chromosomes

  1. Organisms which have similar external appearance with reference to a particular character are called

(1) Analogous

(2) Homologous

(3) Phenocopies

(4) Phenotypes

Ans:- (4) Phenotypes

  1. The sex of a child is determined by the

(1) Chromosomes of the father

(2) Chromosomes of the mother

(3) Rh factor of the parents

(4) Blood group of the father

Ans:- (1) Chromosomes of the father

  1. An organism that breeds true for a particular character producing identical gametes is called

(1) Hemizygous

(2) Heterozygous

(3) Homogamous

(4) Homozygous

Ans:- (4) Homozygous

  1. Chromosomes not related to sex-inheritance are called

(1) Allosomes

(2) Autosomes

(3) Centrosomes

(4) Mesosomes

Ans:- (2) Autosomes

  1. The number of chromosomes in normal human body cell is

(1) 43

(2) 44

(3) 45

(4) 46

Ans:- (4) 46

  1. In human beings, sex is determined by the sex chromosomes X and Y. What would , then , be the genetic constitution of a normal woman?

(1) XO

(2) XX

(3) XY

(4) YY

Ans:- (2) XX

  1. What is the chromosome number in a human ovum?

(1) 24

(2) 46

(3) 48

(4) None of these

Ans:- (4) None of these

  1. Sons of a colour blind woman are always colour blind but not the daughters. This suggests that:

(1) Fever sex chromosomes are transferred to the daughters

(2) Sex chromosomes are transferred only from mother to son

(3) Sex is determined by the mother

(4) Sex-linked characters find immediate expression in man

Ans:- (4) Sex-linked characters find immediate expression in man

  1. The universal recipient blood group is

(1) A

(2) B

(3) AB

(4) O

Ans:- (3) AB

  1. Hemophilia, a human disease, is caused by

(1) Bacterial infection

(2) Fungal infection

(3) Mutant gene

(4) Viral infection

Ans:- (3) Mutant gene

  1. A colour-blind man is married to a normal-visioned woman whose parents also had normal vision. What proportion of their children is likely to be colourblind?

(1) 0 per cent

(2) 25 per cent

(3) 50 per cent

(4) 100 per cent

Ans:- (1) 0 per cent

  1. The disease, sickle-cell anaemia, is caused by

(1) Iron deficiency

(2) Malarial infection

(3) Poor hygiene

(4) None of these

Ans:- (4) None of these

  1. A person with blood group AB is sometimes called a universal recipient because of

(1) Lack of antigens

(2) Lack of antibodies

(3) Lack of both antigens and antibodies

(4) The presence of antibodies

Ans:- (2) Lack of antibodies

  1. Phenylketonuria is a human disease. A person affected by the disease suffers from

(1) Kidney failure

(2) Liver failure

(3) Mental idiocy

(4) Sexual infertility

Ans:- (3) Mental idiocy

  1. Which of the following fungi has been extensively used for genetical studies?

(1) Bread mold

(2) Green mold

(3) Pink bread mold

(4) Mushroom

Ans:- (3) Pink bread mold

  1. The fungus, puccinia graminis, cause a serious plant disease. Which of the following crops is affected by it?

(1) Gram

(2) Maize

(3) Rice

(4) Wheat

Ans:- (4) Wheat

  1. Lathyrism, a human disease causing paralysis of the lower limbs, is caused by

(1) Bacterial infection

(2) Consumption of kesari dal

(3) Nervous failure

(4) Viral infection

Ans:- (2) Consumption of kesari dal

  1. Which of the following is a substance abundantly available in the sea and administered in a certain deficiency disease?

(1) Iodine

(2) Iron

(3) Vitamin A

(4) Flourine

Ans:- (1) Iodine

  1. A preparation of living or killed micro-organisms or viruses used in the prevention of diseases through immunization is called

(1) Toxoid

(2) Vaccine

(3) Viremia

(4) Anti-toxin

Ans:- (2) Vaccine

  1. Following replacement of breast feeding by less nutritive food, low in proteins and calories, infants

(1) Kwashiorkor

(2) Marasmus

(3) Rickets

(4) Pellagra

Ans:- (2) Marasmus

  1. In countries where polished rice is the main cereal in their diet, people suffer from

(1) Pellagra

(2) Scurvy

(3) beri-beri

(4) Osteomalacia

Ans:- (3) beri-beri

  1. People who consume maize as the main cereal in their diet are susceptible to

(1) beri-beri

(2) Pellagra

(3) Scurvy

(4) Kwashiorkor

Ans:- (1) beri-beri

  1. The deficiency of vitamin A causes

(1) Hair to cell

(2) Dysentery

(3) Night blindness

(4) Weakness

Ans:- (3) Night blindness

  1. The disease that is caused by viral infection is

(1) Typhoid

(2) Cholera

(3) Common cold

(4) Tetanus

Ans:- (3) Common cold

  1. The medicine for typhoid is

(1) Chloroquin

(2) Vitamin A

(3) Chloromycetin

(4) Sulpha-drugs

Ans:- (3) Chloromycetin

  1. An increase in the number of leucocytes to 500,000/ and above indicates

(1) Leucopaenia

(2) Leukemia

(3) Leucopoiesis

(4) aleukemia

Ans:- (2) Leukemia

  1. Elephantiasis, i.e.. enormous enlargement of certain parts as that of leg, Scrotum, Penis and breast, etc. is caused by

(1) The tapeworm Taenia solium

(2) The nematode Wuchereria bancrifti

(3) The fungus Microsporum

(4) Allergy

Ans:- (2) The nematode Wuchereria bancrifti

  1. Cancer is deadly disease because it has the ugly potentials of

(1) Having no resemblance to the normal cells of a tissue or organ

(2) Rapid growth to form a tumour

(3) Dissemination to vital organs

(4) Showing cells either very large or extremely small

Ans:- (3) Dissemination to vital organs

  1. Foot and mouth disease occurs in

(1) Cattle

(2) Cattle and sheep

(3) Cattle and pigs

(4) Cattle, sheep and pigs

Ans:- (4) Cattle, sheep and pigs

  1. The polio virus enters the body through

(1) Mosquito bites

(2) Tick bites

(3) Contaminated food and water

(4) Salvia and secretion from the nose

Ans:- (3) Contaminated food and water

  1. In the event of a snake bite, a piece of cloth is tied tightly around the wound to

(1) Prevent the poison from mixing with pure blood

(2) Prevent the poison from circulating to the brain causing cerebral hemorrhage

(3) Prevent the poison from returning to the heart

(4) Prevent the poison from spreading

Ans:- (4) Prevent the poison from spreading

  1. Some fungi have been found to cause diseases in man. Which of the following do you think is one such?

(1) Agaricus

(2) Aspergillus

(3) Puccinia

(4) Rhizopus

Ans:- (2) Aspergillus

  1. A western country that was struck by Severe Acute Respiration Syndrome (SARS) causing a few deaths is

(1) Mexico

(2) Canada

(3) South America

(4) Ireland

Ans:- (2) Canada

  1. An anaerobic species of the bacterium clostridium cause a very serious disease in human populations. Which of the following diseases is it?

(1) Botulism

(2) Pneumonia

(3) Tuberculosis

(4) Typhoid

Ans:- (1) Botulism

  1. Reserpine is used to

(1) Reduce high blood pressure

(2) Increase blood pressure when it is low

(3) Alleviate pain

(4) Cure arthritis

Ans:- (1) Reduce high blood pressure