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CBSE Questions for Class 12 Medical Biology Strategies For Enhancement In Food Production Quiz 4 - MCQExams.com
CBSE
Class 12 Medical Biology
Strategies For Enhancement In Food Production
Quiz 4
Pisciculture is rearing and production of ...............
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Fish
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Birds
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Reptiles
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Wool yielding animals
Explanation
The breeding, rearing, and production of fish by artificial means is called as
pisciculture
, in other words, fish farming.
There is an increasing demand for fish and fish protein, which has resulted in widespread overfishing in wild fisheries
, China holding 62 percent of the world's fish farming practice. T
he most important fish species used in fish farming are carp, salmon and catfish. Hence, option A is correct.
What is the reason for the formation of embryoid from pollen grain in tissue culture medium?
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Cellular totipotency
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Organogenesis
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Double fertilization
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Test tube culture
Explanation
Embryoid is a mass of tissue produced during culture. Formation of embryiod from pollen in tissue culture medium is due to cellular totipotency. Cell potency is a cell's ability to differentiate into other cell types. The more cell types a cell can differentiate into, the greater its potency. Thus, the correct answer is option A.
Queen bee is adapted for ...........
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Laying eggs
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Laying eggs and rearing the young.
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Preparing honey
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Controlling other bees
Explanation
The queen bee is the most valued bee in the whole hive. A queen bee can live for 3-5 years. The main job of queen is to lay eggs. The queen mates only once with several male (drone) bees, and will remain fertile for life. She lays up to 2000 eggs per day. Hence, option A is correct.
Plant part used for culture is called as
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Scion
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Stock
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Explant
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Callus
Explanation
Explant is any portion taken from a plant that will be used to initiate a culture. It can be a portion of the shoot or of the leaves or even just some cells. Thus, the correct answer is option C.
Cellular totipotency is demonstrated by
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Only gymnosperm cells
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All plant cells
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All eukaryotic cells
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Only bacterial cells
Explanation
Totipotency is the ability of a single cell to divide and produce all of the differentiated cells in an organism. Many somatic plant cells, including some fully differentiated types (e.g., leaf mesophyll), provided they contain intact nuclear, plastid and mitochondrial genomes, have the capacity to regenerate into whole plants. This phenomenon is totipotency.
Pasturage effect honey production .
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True
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False
Explanation
Pasturage refers to the plants or vegetation available in the area for grazing animals. As honeybee collects nectar from these flowers using its long tube-like tongues.
The adequate quantity of pasturage or flora determines the quality as well as a taste of honey since the pollen grains and nectar serve as protein food for bees.
As a result, nectar finally gets converted to honey.
So, the correct answer is 'True'.
Which Indian variety of honey bee is commonly used for apiculture?
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Apis dorsata
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Apis florea
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Apis mellifera
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Apis indica
Explanation
Apiculture is the maintenance of honey bee colonies, commonly in hives, by humans. The four important species of honey bee are
Apis dorsata,
Apis mellifera,
Apis florea
.
Apis
indica
, which is commonly called as rock bee or giant honey bee, is the largest Indian variety with an average size of about 20 m.m. Indigenous peoples have traditionally used this species as a source of honey and beeswax, known as honey hunting. It is the most commonly used honeybee for apiculture.
Thus, the correct answer is option D.
Which one of following is more advantageous for cattle breeding ?
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Inbreeding
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Random breeding
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Controlled breeding
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Artificial breeding
Explanation
Artificial breeding is more advantageous for cattle breeding. It is the process in which sperm is placed into the reproductive tract of a female for livestock breeding, especially for diary cattle.
_________ is a setup of a number of bee hives in good desirable locations that can allow
maximum nectar and pollen collection.
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Apiary
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Sericulture
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Bee keeping
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Pisciculture
_______ is a haploid, fertile male whereas _
______ is a diploid sterile female.
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Drone, worker
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Worker, drone
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Drone, queen
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Queen, worker
What is pasturage?
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It is flora from which honey bees collect nectar, pollen and bee-glue
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It is a fauna which helps in biodiversity
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It is a technique of sterlization
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Both A and B
Explanation
The term pasturage refers to plants and vegetation on which grazing animals feed. Paturage
is the flora from which honey bees collect nectar, pollen, and bee glue . These decide
the quality and quantity of honey produced by honey bees.
An increase in the production of fish through
culture fishery has been brought by ________.
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blue revolutions
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white revolution
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green revolution
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red revolution
Plants providing nectar and pollen to the honey bee are collectively called
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Swarm
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Bee fauna
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Apiary
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Pasturage
Explanation
The quality and taste of honey depends upon the flora, pasturage or orchards available for the nectar and pollen collection. Pasturage/ orchard flora of honey bees include a variety of flowering plants such as mango (aam), coconut (narial), almond (badam), tamarind (imli), ber, berseem, litchi, cotton, shishame, apple, mahua, coriander, cashew, coffee, rubber plants, guava, sunflower, neem, etc. So, the correct answer is 'Pasturage'.
Which one of the following fishes is a surface feeder ?
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rohu
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mrigal
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common carp
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catla.
Explanation
Surface feeder takes its food from air water interface or feeds just below water surface. Catla is common fresh water fish variety and is a major surface feeder. The fresh water resources include river, canals lakes, reservoirs etc.
Write full form of NDRI.
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National Dairy Research Institute.
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National Dairy animals Research Institute
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National Dairy farmers Research Institute
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National Dairy and dairy animals Research Institute
Name the species of honey bee, which is used for commercial production of honey.
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Apis mellifera
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Apis dorsata
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Apis florea
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Apis indica
Composite fish culture system is commonly used for ................
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Fish farming
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Organic farming
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Oyster farming
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Crop harvesting
Which of the given product(s) are obtained from bee-keeping?
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Honey
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Wax
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Bee-poison
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All of the above
To enhance poultry production, ............. is done between Indian and exotic breeds for variety improvement.
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Cross breeding
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Selective breeding
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Outcrossing
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Both a and b
Example of seed borne disease among the following is:
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Red rot of sugar cane.
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Bacterial blight of wheat
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Yellow Ear Rot or Tundu disease of rice
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None of the above
Which of the following options represent synthetic hormones which are used for inducing spawning?
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Ovaprim & Ovatide
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Wova-FH
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Florigen
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Vernalin
Which one of the above figures represents Queen bee?
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Figure A
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Figure B
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Figure C
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Both A and B
What do the above figures represent?
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These are different castes of honey bees.
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These are different types of waspss
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These are different castes of house flies.
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These are different castes of beetles.
Micropropagation is
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Germination of seed with cotyledons above the soil
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A technique to obtain new plants by cultivating the cells or tissues in culture medium
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The mature stage of endosperm
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To manufacture sperm
Explanation
Micropropagation is the method of large production of plantlets in a less time. In this method, a small piece of plant tissue (explant) is cultured in a sterile medium which later develops into new plantlets. The offsprings produced by this methods are the exact copy of their parent plant.
Thus, the correct answer is option B.
Which of the following is correctly matched?
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Apiculture - honey bee
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Pisciculture - silk moth
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Sericulture - fish
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Aquaculture - mosquito
Explanation
Correct option: A
Explanation:
Apiculture is the raising and maintaining of honey bees for the commercial production of honey and other bee products.
Fish farming
or the breeding, rearing and transplantation of fish by artificial means is pisciculture.
Sericulture is the rearing of silkworms for the production of silk, also known as
silk farming.
Aquaculture is the farming of aquatic animals which includes fishes, crustaceans, aquatic plants etc. It is also known as
aquafarming.
Hence, the correctly matched pair is Apiculture and honey.
The method of asexual reproduction in plants in which callus is produced is
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Layering
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Grafting
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Regeneration
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Micropropagation
Explanation
The process where plant cells containing meristematic cells are used to produce a mass of undifferentiated cells called callus is called micropropagation.
So the correct answer is
"Micropropagation".
Silk, honey and lac are
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Secretory substance of insects
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Secretory substance of plants
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Artificial chemicals
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All of the above
Explanation
Silk, honey and lac all are secretory substances of insects.
Silk is produced from the insect
Bombyx mori
.
Honey is produced from the
Apis indica,
whereas lac is produced from insects
Laccifer lacca
. Hence, option A is correct.
Explant is?
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Plant collected after harvesting
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Exploited part of a plant
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Small part of the plant meant for tissue culture
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Uprooted for transplantation
Explanation
Correct Option: C
Explanation:
Explant culture is a technique used for the isolation of cells from a piece or pieces of tissue. Tissue harvested in this manner is called an explant. It can be a portion of the shoot, leaves or some cells from a plant.
The aim of plant breeding programme is to produce
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Disease-free varieties
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High-yielding varieties
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Early-maturing varieties
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All of the above
Explanation
Plant breeding is a program in which the species are altered with their genetic sequences to increase their value and life.
Their aim is to produce disease-free, high-yielding, and early maturing varieties.
So, the correct answer is option D.
Vegetative propagation through cell or tissue culture is known as
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Macropropagation
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Cloning
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Micropropagation
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Asexual propagation
Explanation
Micropropagation is culture of apical shoots, axillary buds and meristems on suitable nutrient medium to produce a genetically identical progeny. Macropropagation is production of progeny by means of conventional techniques including cuttings, air-layering and grafting. Production of genetically identical cell lineage or organisms is called as cloning. It includes both conventional and tissues culture techniques. Asexual propagation refers to production of progeny by single parent plant, it can occur through vegetative propagules (rhizome, tubers and bulb) or by artificial methods (cutting, and grafting).
Hence, the correct option is C.
A clone is a group of individuals obtained through
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Hybridisation
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Cross-pollination
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Self-pollination
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Micropropagation
Explanation
Micropropagation is a technique of growing plants from meristematic tissue or somatic cells of plants. Plants with desirable traits are chosen and grown on a suitable nutrient media under controlled and aseptic physical conditions. All the individual plants obtained by this technique are genetically identical and are clones of each other. Thus the correct answer is option D.
What is micropropagation?
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Germination of seed with cotyledons above the soil.
0%
A technique to obtain new plants by cultivating the cells or tissues in culture medium.
0%
The mature stage of endosperm.
0%
To manufacture hormones.
Explanation
Micropropagation is a technique to obtain new plants by cultivating the cell or tissue in culture medium through tissue culture.
So, the correct answer is '
A technique to obtain new plants by cultivating the cells or tissues in culture medium'
The commercial rearing of honey bee is known as
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Verniculture
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Apiculture
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Pisciculture
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Aquaculture
Explanation
Beekeeping or Apiculture is the process or raising and maintaining honeybees to produce honey and market on a large scale. It also deals with the study of honey bee.
Therefore, the correct answer is option B.
Good quality fowls are____________
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Malabari, Nurrah and Badacari
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Gourami, Royans and Ancona
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Minorca, Ancona and Giriraja
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Muscovy, Royans and Jamnapuri
Honey is made by bees from :
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Leaves
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Flower petals
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Flower's nectar
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Flower style
The scientist, who decoded 'the language' of bees, explained their "dances" for communication and was awarded the Noble Prize for it was
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Charles Darwin
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Carolus Linnaeus
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Karl von Frisch
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William Harvey
Explanation
Karl von Frisch was an ethologist who studied the honey bees. The scientist learned and understood the language of bees which was used for the communication. He explained the waggle dance which was performed by the bees to attract the females. He was awarded the Nobel prize for his work on honey bees.
Thus, the correct answer is option C.
The most popular exotic breed of poultry is
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Chittagong
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Aseel
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Minorca
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Kadaknath
Explanation
Exotic breeds are high yielding varieties which are imported to breed in local conditions. The most popular exotic breed of poultry is Minorca because it has small sized body and less maintenance cost.
Thus, the correct answer is option C.
Which of the following is an Italian bee variety?
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Apis indica
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Apis mellifera
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Apis dorsata
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Apis florea
Explanation
Apis mellifera
is an Italian bee variety. It is a very popular bee amongst bee keepers.
The local varieties of bees used for commercial honey production are
Apis cerana indica
, commonly known as the Indian bee,
A. dorsata
, the rock bee and
A. florae,
the little bee.
, the correct answer is '
Apis mellifera'
Which of the following is known as little bee?
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Apis indica
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Apis florea
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Apis dorsata
0%
Apis mellifera
Explanation
Apis florea
is known as little bee because of their small body size. The length of the body is 7-10 nm. They make very simple nest and lives in small colony. They are excellent pollinators and have good defensive mechanisms which protects them from predators.
Ths, the correct answer is option B.
Cattle husbandry is done for which of the following purposes?
(i) Milk production
(ii) Agricultural work
(iii) Meat production
(iv) Egg production
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(i), (ii) and (iii)
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(ii), (iii) and (iv)
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(iii) and (iv)
0%
(i) and (iv)
Explanation
Cattle husbandry is defined as the management of cattle by humans for monetary gains, yielding good quality and quantity milk, help in agriculture and farming and give a huge quantity of meat.
The milch animals like buffaloes, cow, she-goat gives milk and the other cattle which do not give milk like bulls are called draught animals as they help in farming like tilling, cart driving and irrigation.
Cattle husbandry includes only cattle and not hen and duck hence no egg production happens. therefore (i), (ii) and (iii) points are correct but the (iv) point is incorrect.
So, the correct answer is option A.
A particular species of algae is said to have 65-71 % complete protein with all essential amino acids in perfect balance. In comparison, beef has only 22% protein. Which of the following algae is being discussed in the above case?
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Nostoc
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Spirulina
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Trichodesmium
0%
Anabaena
Explanation
Spirulina
is a cyanobacterium. This is a spiral shaped alga. The algae are considered as a source of many elements like iron, manganese and chromium. There are many essential amino acids which make the algae a rich source of protein. The protein content of this algae is considered more than the beef. The protein tablets or powder is made from this algae which can be used as food supplement.
Thus, the correct answer is option B.
The nectar of plants is sucked by
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Bees
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Hummingbirds
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Both A and B
0%
None of the above
Explanation
Bees and hummingbirds, thus play a great role in pollination. Basically, nectar provides an important energy source (carbohydrate) – it supplies a complex range of sugars, whilst pollen gives vital protein and fats.
Honeybee collects the nectar as a source os nutrients of food material.
Hummingbirds are very small birds with a high metabolism. A great deal of energy is spent flying, so they must feed almost constantly. Hummingbirds can consume up to twice their body weight in nectar every day.
The scientist, who was awarded the Noble Prize for decoding bee language is
Report Question
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Konrad Lorenz
0%
Carolus Linnaeus
0%
Karl von Frisch
0%
Nikolaas Tinbergen
Explanation
Karl von Frisch studied ethology of animal behavior and decoded the bee language for which he received a noble price at the end of 1920's Karl von Frisch pointed out that when bees find nectar in a flower, they fly in a special pattern and perform a kind of dance that shows other bees in the vicinity where to find the nectar.
So, the correct answer is '
Karl von Frisch'
Complete the correlation.
Silk worm : Cocoon : : wool :
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Jute of hemp
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Fleece of sheep
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Cotton plant
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None of these
Explanation
As silk is obtained from the cocoon of the silkworm. W
ool is obtained from the fleece of sheep.
So, the correct answer is '
Fleece of sheep'
Like humans, the hairy skin of the sheep has ........ type of fibers.
Report Question
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Three
0%
Two
0%
Four
0%
Five
Explanation
The sheep produce two types of fibres which can be used for the production of wool. The coarse type of fibres is produced near the chin like a beard. The smooth form of fibres is produced on the skin which is used for the production of high-quality wool.
Thus, the correct answer is option B.
Yak wool is common in_____________
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Tibet and Ladakh
0%
Only Tiber
0%
Only Ladakh
0%
Nepal and Tibet
Explanation
Yak wool is common in Tibet and Ladakh it is produced from the coat hair of the yak.
So, the correct answer is '
Tibet and Ladakh'
Wool does not come from_________________
Report Question
0%
Sheep
0%
Goat
0%
Lion
0%
Yak
Explanation
The wool is obtained from the body of many animals. Yak, sheep, camel, goat are the common animals which produce fur on their body which can be obtained and used in the production of wool.
The lion does not produce fur. These animals are not used for obtaining wool.
Thus, the correct answer is option C.
Angora wool is obtained from______________
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Sheep
0%
Camel
0%
Angora rabbits
0%
Yak
Explanation
Angora is the wool produced by Angora rabbits that are found in many countries.
However, the main commercial production of Angora wool is from China and Chile.
It is obtained by shearing the rabbits. No other animal produces Angora wool. Thus the correct answer is option C.
People recovering from long illness are often advised to include the algae
Spirulina
in their diet because it
Report Question
0%
Makes the food easy to digest
0%
Is rich in proteins
0%
Has antibiotic properties
0%
Restores the intestinal microflora
Explanation
Algae Spirulina is one of the richest sources of protein, containing 40-50 percent crude protein on dry weight basis which under favourable condition may reach upto 70 percent. So, the people recovering from long illness are advised to take it in the diet.
Which of the following does not yield wool?
Report Question
0%
Yak
0%
Camel
0%
Goat
0%
Woolly dog
Explanation
The wool is obtained from the body of many animals. Yak, sheep, camel, goat are the common animals that produce fur on their body which can be obtained and used in the production of wool.
The woolly dog is not used for yielding wool. These are the dogs that are found in the cold regions.
Thus, the correct answer is option D.
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