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Which one of the following acts as a communication system?

A. Blood

B. Nerve

C. Lymph

D. Enzymes

Correct Answer :

B. Nerve


Related Questions

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It is possible to produce seedless tomato fruits by

A. applying trace elements in tomato fields

B. spraying mineral solution on plants

C. spraying harmones on flowers

D. applying fertilizers containing radioactive elements

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Bio indicators are

A. stains

B. pH indicators

C. weather indicators

D. soil indicators

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Pneumonia is ,a bacterial disease caused by the type of bacteria called

A. Bacilli

B. Cocci

C. Sprilli

D. Vibrio

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Genes are arranged in chromosomes

A. In clusters

B. In binary fashion

C. In linear fashion

D. Scattered

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Clotting of blood is

A. a chain reaction

B. reversible reaction

C. reflex action

D. no reaction

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The 'germ theory of disease' was propounded by

A. Joseph Lister

B. Robert Koch

C. Louis Pasteur

D. Jacob Heule

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Which among the following is a balanced fertiliser for plants?

A. Urea

B. Ammonium Sulphate

C. Nitrates

D. Compost

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Oxygen transportation in human body takes place through
1) Blood
2) Lungs
3) Tissue
The correct sequence of transportation is

A. 1, 2 and 3

B. 3, 1 and 2

C. 2, 1 and 3

D. 1,3 and 2

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Adaptation for flying is termed as

A. aquatic

B. volant

C. fossorial

D. cursorial

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The metallic part in haemoglobin is

A. Copper

B. Molybdenum

C. Nickel

D. Iron

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What are oncogenes?

A. a dominant gene

B. a set of genes which produce cancer

C. a gene present in the X-chromosomes causing haemophilia

D. a recessive gene

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Under the immunisation programme's Govt. of India is providing vaccination to prevent some vaccine-preventable diseases. Which of the following is NOT one of them?

A. Tuberculosis

B. Diphtheria

C. Tetanus

D. Plague

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Egg laying animals are referred to as

A. viviparous

B. oviparous

C. ovoviviparous

D. vegetative

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The metallic part of haemoglobin is

A. copper

B. molybdenum

C. nickel

D. iron

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Best growth of plants is attained if they are supplied with

A. low carbohydrate and high nitrogen

B. high carbohydrate and low nitrogen

C. high carbohydrate and moderate nitrogen

D. equal carbohydrate and nitrogen

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Which of the following is a good and rich source of vitamin 'C'?

A. Milk

B. Radish

C. Mango

D. Lemon Juice

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The white blood corpuscles the body because they are popularly called soldiers of

A. march at a regular pace

B. appear uniform

C. defend the body

D. are disciplined

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Eugenics is the application of genetics to improve

A. crop plants

B. fruit trees

C. cattle

D. human beings

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A child goes on vomiting profusely and develops symptoms of diarrhoea. Chances are that in the child's blood serum there is a drop In

A. calcium

B. iron

C. sodium

D. phosphorus

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The cellular and molecular control o( programmed cell death is known as

A. Apoptosis

B. Ageing

C. Degeneration

D. Necrosis

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The brain is covered by

A. meninges

B. bone

C. skin

D. All the above

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Which of the following is a vector-borne disease for which a special programme has been launched by the Govt. of India?

A. Polio

B. HIV / AIDS

C. Malaria

D. Cancer

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Which among the following may carry rabies?

A. Cat

B. Dog

C. Fox

D. All the three

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Vessels proceeding to the heart are

A. veins

B. arteries

C. capillaries

D. lymph ducts

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The bacteria that gets into our body is consumed by

A. RBC

B. Blood platelets

C. Plasma

D. Phagocytes

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Nephrons are found inside

A. Liver

B. Lung

C. Brain

D. Kidneys

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An inherited characteristic which does not appear in one generation but can appear in the next is called

A. dominant

B. recessive

C. homozygous

D. heterozygous

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The condition in which there is abnormal decrease of white blood corpuscles is known as

A. leukaemia

B. leucoderma

C. leukopenia

D. anaemia

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Oxygen transport is a function of

A. white blood corpuscles

B. red blood corpuscles

C. blood platelets

D. plasma

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Saliva flows at the sight of food. This action is

A. involuntary

B. voluntary

C. a reflex

D. causative