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4

Necrosis is a symptom which is recognised by

A. pattern colouration on leaves

B. little leaves

C. out growth

D. death of tissues

Correct Answer :

D. death of tissues


Related Questions

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4

The medulla oblongata encloses the

A. optic lobe

B. optic capsule

C. second ventricle

D. fourth ventricle

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4

A few infections like sore throat, whooping cough and tuberculosis are carried through the respiratory system. Which among the following is caused by bacteria while passing through the respiratory tract?

A. diphtheria

B. dysentery

C. jaundice

D. typhoid

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4

Hypogeal germination is found in

A. castor

B. onion

C. bean

D. bengal gram

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4

One of the following is often called the master gland. Which one is it?

A. Thymus

B. Islets of Langerhans

C. Pituitary

D. Thyroid

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4

Haemoglobin is dissolved in the plasma of

A. frog

B. fish

C. man

D. earthworm

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4

Whooping cough is caused by

A. Salmonella

B. Bacillus pertussis

C. Variola

D. Vibriona

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4

In one minute normally the heart beats

A. 60 times

B. 80 times

C. 100 times

D. 72 times

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4

The first person to observe the bacteria, protozoa and spermatozoa under the microscope was

A. Theodore Schwann

B. Matthias Schleidon

C. Robert Hooke

D. Leuwenhoek

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4

Whale reproduces by

A. ovipary

B. vivipary

C. ovovivipary

D. fission

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4

The bird that lays the largest egg is

A. crow

B. ostrich

C. cuckoo

D. eagle

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4

The cavities of the brain are filled with

A. Blood

B. Lymph

C. Water

D. Cerebrospinal fluid

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4

Consumption of potassium cyanide leads to total stoppage of cellular activity in the human body, as it cripples the

A. heart

B. lungs

C. kidneys

D. mitochondria

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4

Which of the following characteristics separates man from all other primates?

A. Exhibition of curiosity

B. Degenerate sense of smell

C. Opposability thumb

D. Projecting chin

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4

Two tall plants, each being a hybrid and carrying a recessive factor for dwarfness are crossed. What proportion of their offspring will be dwarf?

A. 0.5

B. 0.25

C. 0.75

D. 1

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4

The most accepted theory of the origin of earth is the fiery origin which was propounded by

A. Laplace

B. Chamberlain

C. James Jean

D. Hoyle

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4

Animals that feed only on dead flesh are

A. herbivorous

B. carnivorous

C. omnivorous

D. carrion-eaters

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4

Fibrinogen is present in

A. lymph

B. liver

C. blood plasma

D. pancreas

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4

Biological control is to check growth of

A. plants

B. animals

C. weeds

D. one pest by another

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4

The animal without urinary bladder is

A. Bird

B. Man

C. Rabbit

D. Cow

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4

Nephantis is popularly called

A. coconut caterpillar

B. brown plant hopper

C. tobacco caterpillar

D. pulse beetle

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4

The theory of 'jumping genes' was propounded by

A. Gregor John Mendel

B. Thomas Hunt Morgan

C. Barbara McClintock

D. Watson and Crick

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4

The gestation period for the elephant is

A. 10 months

B. 15 months

C. 22 months

D. 30 months

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4

What are the symptoms of Xeroph-thalmia?

A. eye weakness

B. dry skin and night blindness

C. nervous break down

D. All the above

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4

In case of a heart attack a hormone is injected as an emergency measure. Which one is it?

A. Thyroxine

B. Adrenaline

C. Heparin

D. Insulin

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4

The protein synthesis takes place in

A. Ribosomes

B. Chromosomes

C. DNA

D. None of these

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4

Aphids are

A. insect pests

B. fungal pests

C. bacterial pests

D. viral pests

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4

The hypoglossal nerves are the pairs of the spinal nerves

A. First pair

B. Second pair

C. Third pair

D. Fourth pair

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4

Blood plasma from which fibrinogen is removed is known as

A. serum

B. blood concentrate

C. lymph

D. antibody component

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4

Insulin is concerned with the metabolism of

A. sugar

B. fats

C. proteins

D. vitamins

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4

Excess of amino-acids are broken down to form urea in the

A. Liver

B. Kidney

C. Spleen

D. Rectum