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Current Affairs January 2024

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Appearance of offspring resembling their remote ancestor is called

A. Atavism

B. Lethality

C. Mutation

D. Progeny

Correct Answer :

A. Atavism


Related Questions

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Loss of blood is

A. clotting

B. receding

C. healing

D. drying up

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Chromosome theory of inheritance was propounded by

A. Sutton and Boveri

B. Mendel

C. Muller

D. Beadle and Tatum

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Food substances are substances by

A. hormones

B. enzymes

C. vitamins

D. zymogens

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One of the following disease cannot be prevented by the DPT (triple-antigen) immunization of children.

A. Tetanus

B. Tuberculosis

C. Whooping cough

D. Diphtheria

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Cancer cells are more easily damaged by radiation than normal cells because they are

A. different in structure

B. non-dividing

C. starved of nutrition

D. undergoing rapid division

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4

The first sign of life made its appearance on the earth about

A. 1 million years ago

B. 500 million years ago

C. 1 billion or 1000 million years ago

D. 3 billion years ago

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Fusarium causes the wilting of the cotton plants by

A. clogging the vessels

B. producing toxic substance

C. causing necrosis of roots

D. killing the leaves

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Loss of blood is minimized due to blood

A. clotting

B. receding

C. healing

D. drying up

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What is 'atavism'?

A. The genes which show numerous phenolypic effects

B. Reappearance of traits after several generations

C. Effects of mutation

D. Intermediate inheritance of genes

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4

Stripes on the bodies of animals Indicate

A. mating habit

B. food habit

C. cave dwelling

D. matching of skin colour with the surroundings

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In plants water is carried upwards by

A. phloem

B. paranchyma

C. xylem

D. meristem

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Organisms that feed on the excreta of other organisms are called

A. autotrophs

B. heterotrophs

C. coprophagous

D. saprotrophs

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Niche' refers to

A. place of living

B. type of food

C. place of living and type of food

D. food and movement

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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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Eye is an organ that can be called as

A. Phonoreceptor

B. Thigmoreceptor

C. Photoreceptors

D. Rheoreceptor

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Genes are made of

A. Carbohydrates

B. Proteins

C. Fats

D. Nucleotides

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Which of the following crops helps in nitrogen fixation?

A. Rice

B. Wheat

C. Maize

D. Beans

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Animals that feed only on dead flesh are

A. herbivorous

B. carnivorous

C. omnivorous

D. carrion-eaters

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Whale reproduces by

A. ovipary

B. vivipary

C. ovovivipary

D. fission

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The eland having endorine as well as exocrine function is

A. Adrenal gland

B. Thyroid gland

C. Pituitary gland

D. Pancreatic gland

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In a gamete there will be

A. one pair of sex chromosomes

B. only one sex chromosome

C. no sex chromosome

D. only autosomes

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Organisms that live in the deep sea are mainly

A. Herbivores

B. Carnivores

C. Detritivores

D. None of the above

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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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The genetic code DNA is carried from the nucleus to Ribosome by

A. t-RNA

B. r-RNA

C. S-DNA

D. ATP

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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

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The valve between the right auricle and right ventricle is called

A. Tricuspid

B. Bicuspid

C. Monocuspid

D. Semilunar

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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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Which organelle in the cell, other than nucleus, contains DNA?

A. Centriole

B. Golgi apparatus

C. Lysosome

D. Mitochondrion

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Temperature treatment which shortens the vegetative period and hastens the flowering is called

A. Phototropism

B. Photoperiodism

C. Vernalisation

D. Thermoregulation

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Which of the following organelles is known as the 'power House' of the cell?

A. Golgi Bodies

B. Ribosomes

C. Mitochondria

D. None of these