Of the following taxonomic categories which is the most inclusive (i.e. is the highest in hierarchy)?
Answer: C
Class is the most inclusive of these.
The hierarchy runs kingdom, phylum, class, order, family, genus, species, subspecies - each level containing the next. So a class contains many orders, each of which contains many genera.
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Breeding and management of bees is known as :
Answer: A
The breeding and management of bees is apiculture, from the Latin apis, bee.
Sericulture is silkworm rearing, pisciculture fish farming and silviculture forestry.
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Most fish do not sink in water because of the presence of
Answer: A
Statements 1 and 2 are correct: fish stay buoyant because of the swim bladder, also called the air bladder.
It is a gas-filled sac whose volume the fish adjusts to match its density to the surrounding water, so it can hold depth without swimming. Sharks have none and must keep moving to avoid sinking.
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Of the following biological levels of organization, which represents the smallest or lowest level?
Answer: A
The cell is the lowest of these levels.
The hierarchy runs cell → tissue → organ → organ system → organism → population → community → ecosystem. The cell is the smallest unit that shows all the properties of life.
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Which of the following is not a root?
Answer: A
The potato is not a root - it is a stem tuber, the swollen tip of an underground branch, with buds (the eyes) and scale leaves.
Carrot and radish are swollen taproots, and sweet potato is a swollen adventitious root.
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Pollen grains in plants are produced in
Answer: C
Pollen grains are produced in the flower, in the anthers of the stamens.
Each pollen grain is the male gametophyte, containing the cells that will produce the male gametes. The anther's four pollen sacs release it when they split open.
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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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