11th And 12th > Biology
STRATEGIES FOR ENHANCEMENT IN FOOD PRODUCTION MCQs
Total Questions : 60
| Page 1 of 6 pages
Answer: Option D. ->
Develop plants with low nutritional level
:
D
Plant breeding is defined as genetic improvement of crops in order to create desired plant types that are better suited for cultivation in all weather conditions, give better yields and are disease resistant. It also aims to develop plants with high levels of desirable nutrients.
:
D
Plant breeding is defined as genetic improvement of crops in order to create desired plant types that are better suited for cultivation in all weather conditions, give better yields and are disease resistant. It also aims to develop plants with high levels of desirable nutrients.
Answer: Option A. ->
IR-8
:
A
India adopted IR-8, a semi-dwarf rice variety developed by the International Rice Research Institute (IRRI) that could produce more grains of rice per plant when grown with certain fertilizers and irrigation. Sonalika and triticum are wheat varieties. Saccharum is sugarcane variety.
:
A
India adopted IR-8, a semi-dwarf rice variety developed by the International Rice Research Institute (IRRI) that could produce more grains of rice per plant when grown with certain fertilizers and irrigation. Sonalika and triticum are wheat varieties. Saccharum is sugarcane variety.
Answer: Option A. ->
True
:
A
Foot and mouth disease, hemorrhagic septicemia and anthrax are contagious diseases. So, if symptoms appear in a single animal, all the animals in the farm have to be culled and their products have to be destroyed.
:
A
Foot and mouth disease, hemorrhagic septicemia and anthrax are contagious diseases. So, if symptoms appear in a single animal, all the animals in the farm have to be culled and their products have to be destroyed.
Answer: Option C. ->
Heterozygosity
:
C
:
C
The increase in the level of production traits due to crossing is called hybrid vigour or heterosis. Hybrid vigour is the increased vigour of the offspring over their both parents. Such offsprings (hybrids) are obtained between two genetically different pureline varieties (parents).
Answer: Option B. ->
Low nitrogen content
:
B
:
B
Biochemical and physiological characteristics such as high aspartic acid, low nitrogen and sugar content leads to pest resistance. For e.g. in maize, the low nitrogen content leads to non-preference by the maize stem borers.
Answer: Option A. ->
Spirulina, Methylophilus, Chlorella, Saccharomyces
:
A
Edible microbes or technically Single Cell Proteins, in short SCP, make a good alternate source of proteins for animal and human nutrition. Microorganisms like algae, fungi, yeast and bacteria utilize inexpensive feedstock and wastes as sources of carbon and energy for growth to produce biomass, protein concentrate or amino acids. Spirulina maxima, Chlorella pyrenoidosa are algae that can be used to produce SCPs. Fungi like Saccharomyces cerevisiae and bacteria such as Methylophilus methylotrophus are also good sources of SCPs.
:
A
Edible microbes or technically Single Cell Proteins, in short SCP, make a good alternate source of proteins for animal and human nutrition. Microorganisms like algae, fungi, yeast and bacteria utilize inexpensive feedstock and wastes as sources of carbon and energy for growth to produce biomass, protein concentrate or amino acids. Spirulina maxima, Chlorella pyrenoidosa are algae that can be used to produce SCPs. Fungi like Saccharomyces cerevisiae and bacteria such as Methylophilus methylotrophus are also good sources of SCPs.
Answer: Option B. ->
Goat
:
B
:
B
Pashmina is a fine type of cashmere wool. It is obtained from Kashmiri goat. This wool can be used to make pashmina scarf, wrap, stole or cashmere blanket.
Answer: Option A. ->
Himagiri
:
A
Himagiri, a wheat cultivar, has been bred for resistance to diseases like leaf and stripe rust, a fungal disease, that causes a rust like layer to appear on the parts affected and the hill bunt disease which is another fungal disease that eats up the entire wheat kernel and fills it with fish odour spores.
:
A
Himagiri, a wheat cultivar, has been bred for resistance to diseases like leaf and stripe rust, a fungal disease, that causes a rust like layer to appear on the parts affected and the hill bunt disease which is another fungal disease that eats up the entire wheat kernel and fills it with fish odour spores.
Answer: Option A. ->
Out breeding
:
A
Outbreeding refers to breeding that occurs between different breeds or different species.
Hisardale is a cross breed of sheep developed in Punjab by crossing Bikaneri ewes and Marino rams.
Male and female animals of two different related species are mated. For example : A mule is a cross between a female horse or mare and a male donkey or jack.
:
A
Outbreeding refers to breeding that occurs between different breeds or different species.
Hisardale is a cross breed of sheep developed in Punjab by crossing Bikaneri ewes and Marino rams.
Male and female animals of two different related species are mated. For example : A mule is a cross between a female horse or mare and a male donkey or jack.
Answer: Option A. ->
True
:
A
Humans appeared on Earth millions of years ago. They have lived through most of their time on Earth, battling odds viz., the elements of the earth, famines (crop failure), epidemics (widespread of infectious disease) and wars (armed conflict among different countries). They have managed to survive and establish a population of about 1 billion in the 17th century and it has been increasing ever since.
:
A
Humans appeared on Earth millions of years ago. They have lived through most of their time on Earth, battling odds viz., the elements of the earth, famines (crop failure), epidemics (widespread of infectious disease) and wars (armed conflict among different countries). They have managed to survive and establish a population of about 1 billion in the 17th century and it has been increasing ever since.
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