The branch of biology which deals with the identification, nomenclature and classification of organisms is
Answer: C
Taxonomy deals with the identification, nomenclature and classification of organisms.
Linnaeus founded it with the binomial system, in which each species has a two-part Latin name. Ecology studies organisms in relation to their surroundings, and toxicology the effects of poisons.
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The term Biology was first coined by-
Answer: D
The term biology was coined independently by Lamarck and Treviranus, both in 1802.
Lamarck used it in France and Gottfried Treviranus in Germany, in each case for a new science of living things that would unite botany and zoology under one set of principles.
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Homologous structures among animals provide evidence for evolution in that these structures are
Answer: C
Homologous structures are different in different animals but are modifications of the same basic structure.
The forelimb of a man, a bat, a whale and a horse has the same bones in the same order, adapted to grasping, flying, swimming and running. That shared plan is what points to a shared ancestor.
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Milk is poor source of-
Answer: A
Milk is a poor source of iron.
It supplies calcium, phosphorus, protein and B vitamins in quantity, but almost no iron - which is why infants fed on milk alone beyond about six months become anaemic and need iron-rich weaning foods.
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Which one of the following is not used for ex situ plant conservation?
Answer: A
Shifting cultivation is not a method of ex situ conservation - it is a farming practice, and one that destroys habitat.
Ex situ conservation keeps species outside their natural home: botanical gardens, zoos, seed banks, field gene banks and cryopreservation. In situ conservation protects them where they live, in parks and sanctuaries.
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What is scientific name of man ?
Answer: A
The scientific name of man is Homo sapiens, meaning wise man.
Under the binomial system the first word is the genus and the second the species; the genus is capitalised, the species is not, and both are italicised. Rana tigrina is the Indian bullfrog and Felis domestica the cat.
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On an average how many litres of blood a human body have ?
Answer: D
An adult human has about 5 to 6 litres of blood, roughly 7 to 8 per cent of body weight.
Men average nearer 5.5 litres and women about 4.5. Losing more than about a fifth of it causes shock.
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Nuclear membrane is absent in ?
Answer: A
The prokaryotes have no nuclear membrane.
Their DNA lies free in the cytoplasm as a single circular chromosome in a region called the nucleoid. Bacteria and archaea are prokaryotes; protozoa are eukaryotes and do have a nucleus.
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Select the correct statement about the Heart Valves.
Answer: B
The correct statement is that the atrioventricular valves are supported by the chordae tendineae, which stop them turning inside out when the ventricles contract.
The tricuspid valve lies between the right atrium and right ventricle and the mitral between the left atrium and left ventricle - the reverse of what two of the other options say.
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Organisms that feed on the excreta of other organisms are called
Answer: C
Organisms that feed on the droppings of others are coprophagous, from the Greek kopros, dung.
Dung beetles and many termites and rodents are coprophagous. Rabbits eat their own soft pellets to extract nutrients released by the second passage through the gut.
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