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4

The age of a tree can be determined by

A. counting the number of annual rings

B. thickness of the bark

C. the bulk of the tree

D. the number of leaves

Correct Answer :

A. counting the number of annual rings


Related Questions

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4

Mouth and foot diseases in cattle are caused by

A. Bacteria

B. Virus

C. Fungi

D. Pennicilium

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4

The latest drug for cancer is obtained from

A. Strychnos nuxvomica

B. Vinca rosea

C. Atropa belladona

D. Phyllanthus niruri

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4

Insects that make a clicking sound are

A. crickets

B. beetles

C. flies

D. silver fish

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4

The blood clotting requires the vitamin

A. A

B. B

C. C

D. K

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The enzyme that is necessary to bring about clotting of blood is

A. peptidase

B. amylase

C. lipase

D. thrombokinase

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4

The 'father of genetics' is

A. Mendel

B. Morgan

C. Darwin

D. Muller

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4

Adaptation for flying is termed as

A. aquatic

B. volant

C. fossorial

D. cursorial

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4

Intravascular clotting of blood is known as

A. anaemia

B. leucopenia

C. thrombosis

D. thrombin

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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

Rate of mutation can be increased in plants by

A. More manure

B. More pesticides

C. X-ray

D. More light

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4

Eye is an organ that can be called as

A. Phonoreceptor

B. Thigmoreceptor

C. Photoreceptors

D. Rheoreceptor

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4

Dinosaur is a/an

A. Fish

B. Amphibian

C. Reptile

D. Bird

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4

The mouth of a river opening into the sea is termed as

A. shore line

B. littoral zone

C. continental shelf

D. estuary

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A person with a blood group ____ is considered to be an universal donor.

A. A Positive

B. AB Positive

C. AB Negative

D. O Positive

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4

Milk fever in cows occurs due to lack of

A. Phosphates

B. Calcium

C. Iron

D. Iodine

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4

Which among, the following is a solid lubricant?

A. carbohydrate

B. graphite

C. protein

D. starch

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4

When one gene controls two or more different characters simultaneously, the phenomenon is called

A. Apomixis

B. Pleiotropy

C. Polyploidy

D. Polyteny

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4

Blood is

A. acidic

B. alkaline

C. neutral

D. like a buffer

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Which one of the following is not an essential micronutrient for plants?

A. Boron

B. Zinc

C. Sodium

D. Copper

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4

Fibrinogen is present in

A. lymph

B. liver

C. blood plasma

D. pancreas

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4

Spiders can take only

A. solid food

B. liquid food

C. plant juice

D. flesh of dead animals

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4

Kwashiorkar is characterised by

A. dermatitis, changes in hair pigments and retarded brain growth

B. excretion of creatine in excess

C. tyrosinosis and alcaptonuria

D. None of these

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4

Which element in chillies causes burning sensations?

A. Capsaicin

B. Cyanogen

C. Ammonia

D. Capsicum

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4

Biologists have so far known, found and identified a large number of species in the plant and animal kingdom. In terms of numbers, the largest found and identified so far is from among the

A. fungi

B. plants

C. insects

D. bacteria

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4

The germ theory of diseases was put forward by

A. Louis Pasteur

B. Luister

C. Leuwenhoek

D. Flemming

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4

The equilibrium and co-ordination is looked after by which part of the brain?

A. Cerebrum

B. Medulla oblongata

C. Cerebellum

D. Olfactory lobes

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4

The term 'Fauna' means

A. plant kingdom

B. animal kingdom

C. neither

D. Both

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4

Compared to the veins, the walls of arteries are

A. thicker

B. thinner

C. similar

D. very much thinner

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4

Warm-bloodedness

A. means, animals living in warm climates

B. means, the warming up of blood as the temperature increases during day time

C. is characterised by constant body temperature

D. is shown by reptiles

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4

Loss of blood is

A. clotting

B. receding

C. healing

D. drying up