Recent questions tagged zoology

Match the following sexually transmitted diseases (Column â€“ I) with their causative agent (Column â€“ II) and select the correct option

asked Aug 21, 2018 by pady_1

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Artificial selection to obtain cows yielding higher milk output represents :

asked Aug 21, 2018 by pady_1

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Transplantation of tissues/ organs fails often due to non-acceptance by the patient's body. Which type of immuneresponse is responsible for such rejections?

asked Aug 21, 2018 by pady_1

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Select the correct route for the passage of sperms in male frogs :

asked Aug 21, 2018 by pady_1

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Adult human RBCs are enucleate. Which of the following statements(s) is / are most appropriate explanation for this feature ? (a) They do not need to reproduce (b) They are somatic cells (c) They do not metabolize (d) All their internal space is available for oxygen transport

asked Aug 21, 2018 by pady_1

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Which of the following options best represents the enzyme composition of pancreatic juice ?

asked Aug 21, 2018 by pady_1

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Which one of the following statements is correct with reference to enzymes ?

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Lungs are made up of air-filled sacs, the alveoli. They do not collapse even after forceful expiration, because of :

asked Aug 21, 2018 by pady_1

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GnRH, a hypothalamic hormone, needed in reproduction, acts on

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A gene whose expression helps to identify transformed cell is known as

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In case of poriferans, the spongocoel is lined with flagellated cells called :

asked Aug 21, 2018 by pady_1

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Pick out the correct statements : (a) Haemophilia is a ***-linked recessive disease. (b) Down's syndrome is due to aneuploidy (c) Phenylketonuria is an autosomal recessive gene disorder. (d) Sickle cell anaemia is an X – linked recessive gene disorder.

asked Aug 21, 2018 by pady_1

2 answers

Asthma may be attributed to :

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Which of the following features is not present in the Phylum – Arthropoda?

asked Aug 21, 2018 by pady_1

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The amino acid Tryptophan is the precursor for the synthesis of :

asked Aug 21, 2018 by pady_1

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Select the incorrect statement :

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Which one of the following characteristics is not shared by birds and mammals?

asked Aug 21, 2018 by pady_1

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Which one of the following statements is wrong?

asked Aug 21, 2018 by pady_1

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Analogous structures are a result of :

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Which of the following is wrongly matched in the given table?

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In mammals, which blood vessel would normally carry largest amount of urea?

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In the stomach, gastric acid is secreted by the :

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Which of the following guards the opening of hepatopancreatic duct into the duodenum?

asked Aug 21, 2018 by pady_1

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Lack of relaxation between successive stimuli in sustained muscle contraction is known as

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Reduction in pH of blood will-

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It is much easier for a small animals to run uphill than for a large animal, because -

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Identify the correct statement on 'inhibin' -

asked Aug 21, 2018 by pady_1

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Photosensitive compound in human eye is made up of -

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Change in GnRH pulse frequency in females is controlled by circulating levels of -

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Which of the following characteristic features always holds true for the corresponding group of animals ?

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A system of rotating crops with legume or grass pasture to improve soil structure and fertility is called -

asked Aug 21, 2018 by pady_1

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Following are the two statements regarding the origin of life - (a) The earliest organisms that appeared on the earth were non-green and presumably anaerobes (b) The first autotrophic organisms were the chemoautotrophs that never released oxygen Of the above statements which one of the following options is correct ?

asked Aug 21, 2018 by pady_1

2 answers

Fertilization in humans is practically feasible only if

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Which of the following pairs of hormones are not antagonitic (having opposite effects) to each other ?

asked Aug 21, 2018 by pady_1

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Which type of tissue correctly matches with its locations ?

asked Aug 21, 2018 by pady_1

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Which of the following statements is not true for cancer cells in relation to mutations ?

asked Aug 21, 2018 by pady_1

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Which part of the tobacco plant is infected by Meloidogyne incognita ?

asked Aug 21, 2018 by pady_1

2 answers

Antivenom injection contains preformed antibodies while polio drops that are administered into the body contain -

asked Aug 21, 2018 by pady_1

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Name the chronic respiratory disorder caused mainly by cigarette smoking

asked Aug 21, 2018 by pady_1

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Which of the following structures is homologus to the wing of the birds ?

asked Aug 21, 2018 by pady_1

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Blood pressure in the pulmonary artery is -

asked Aug 21, 2018 by pady_1

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Which of the following features is not present in Periplaneta americana ?

asked Aug 21, 2018 by pady_1

1 answer

The two polypeptides of human insulin are linked together by

asked Aug 21, 2018 by pady_1

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Eutrophication of water bodies leading to killing of fishes is mainly due to nonavailability of -

asked Aug 21, 2018 by pady_1

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Which of the following immunoglobulins does constitute the largest percentage in human milk?

asked Aug 21, 2018 by pady_1

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The introduction of t-DNA into plants involves -

asked Aug 21, 2018 by pady_1

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Industrial melanism is an example of -

asked Aug 21, 2018 by pady_1

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Name the pulmonary disease in which alveolar surface area involvedin gas exchange is drastically reduced due to damage in the alveolar walls.

asked Aug 21, 2018 by pady_1

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Doctors use stethoscope to hear the sounds produced during each cardiac cycle. The second sound is heard when :

asked Aug 21, 2018 by pady_1

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Which of the following joints would allow no movement?

asked Aug 21, 2018 by pady_1

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