MCQ 11 Mark
- AOnly individual 3
- B1 and 2
- C1 and 3
- D2 and 3
Answer
View full question & answer→1 and 3
Explanation : 1 and 3 shows the possible parent of the child X.
Explanation : 1 and 3 shows the possible parent of the child X.
Questions
M.C.Q (1 Marks)
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12 questions · self-marked practice — reveal the answer and mark yourself.
MCQ 21 Mark
Crop rotation is used by farmers to increase:
- ASoil fertility
- BNitrogenous content of soil
- CBreeding
- DOrganic content of soil
Answer
View full question & answer→Soil fertility
Explanation : Crop rotation is the method of agriculture in which leguminous plants are grown between two cereal crops. The root nodule of this bacterium fix the atmospheric nitrogen and increase the fertility of the soil.
Explanation : Crop rotation is the method of agriculture in which leguminous plants are grown between two cereal crops. The root nodule of this bacterium fix the atmospheric nitrogen and increase the fertility of the soil.
MCQ 31 Mark
Study the pedigree chart of a certain family given below and select the correct conclusion which can be drawn for the character
- AThe trait under study could not be colour blindness
- BThe female parent is heterozygous
- CThe male parent is homozygous dominant
- DThe parent could not have had a normal daughter for this character
Answer
View full question & answer→The female parent is heterozygous
Explanation : Pedigree chart is used to detect the flow of particular trait in the family over several generations. The given charts indicate that the female parent is heterozygous in nature.
Explanation : Pedigree chart is used to detect the flow of particular trait in the family over several generations. The given charts indicate that the female parent is heterozygous in nature.
MCQ 41 Mark
Flow of energy in our ecosystem takes place
- Aonly in one direction
- Bpossible in two directions
- Cin three dimensions
- Dmay occur in multiple directions
Answer
View full question & answer→only in one direction
Explanation : In the ecosystem, the flow of energy takes place in only one direction. The flow of energy takes place from producers to final consumers. The energy present in one trophic level never returns back to the producer.
Explanation : In the ecosystem, the flow of energy takes place in only one direction. The flow of energy takes place from producers to final consumers. The energy present in one trophic level never returns back to the producer.
MCQ 51 Mark
What was the resultant found in the place marked E?
- AGlucose, fatty acids and lipids
- BSome fatty acids and organic acids
- CSome amino acids as glycine and alanine
- DOrganic esters only
Answer
View full question & answer→Some amino acids as glycine and alanine
Explanation : In Urey and Miller's experiment, the product formed after the continuous sparking in the mixture of gases at high temperature were some amino acids like glycine and alanine. Sugar and nitrogenous base were also obtained from the same set up by some other scientist.
Explanation : In Urey and Miller's experiment, the product formed after the continuous sparking in the mixture of gases at high temperature were some amino acids like glycine and alanine. Sugar and nitrogenous base were also obtained from the same set up by some other scientist.
MCQ 61 Mark
XO type of sex determination is found in:
- AElephant
- BHuman beings
- CDog
- DGrasshopper
Answer
View full question & answer→Grasshopper
Explanation : In grasshopper, sex determination is of XO type, in which the males have only one X-chromosome besides the autosomes whereas females have a pair of X-chromosome.
Explanation : In grasshopper, sex determination is of XO type, in which the males have only one X-chromosome besides the autosomes whereas females have a pair of X-chromosome.
MCQ 71 Mark
Which of the following is included in bioinsecticide?
- AViruses and bacteria
- BViruses, bacteria, fungi, protozoans and mites
- CViruses, bacteria, fungi and protozoa
- DViruses, bacteria and fungi
Answer
View full question & answer→Viruses, bacteria and fungi
Explanation : Viruses, bacteria and fungi
Explanation : Viruses, bacteria and fungi
MCQ 81 Mark
In transgenics, expression of transgene in target tissue is determined by:
- AEnhances
- BReporter
- CTransgene
- DPromoter
Answer
View full question & answer→Reporter
Explanation : Reporter
Explanation : Reporter
MCQ 91 Mark
Growth curve is normally:
- AC-shaped
- BJ-shaped
- CS-shaped
- DV-shaped
Answer
View full question & answer→S-shaped
Explanation : S-shaped
Explanation : S-shaped
MCQ 101 Mark
A river with an inflow of domestic sewage rich in organic waste may result in:
- AAn increased production of fish due to biodegradable nutrients.
- BDeath of fish due to lack of oxygen.
- CIncreased population of aquatic food web organisms.
- DDrying of the river very soon due to algal bloom.
Answer
View full question & answer→Death of fish due to lack of oxygen.
Explanation :Death of fish due to lack of oxygen.
Explanation :Death of fish due to lack of oxygen.
MCQ 111 Mark
Name the spermicidal cream developed by Central Drug Research Institute (Lucknow), India.
- ACorovira
- BSapindus
- CSpermacid
- DConsap
Answer
View full question & answer→Consap
Explanation : Central drug research institute, Lucknow, India has developed a spermicidal cream called Consap. It has the capability of killing the sperm released during insemination.
Explanation : Central drug research institute, Lucknow, India has developed a spermicidal cream called Consap. It has the capability of killing the sperm released during insemination.
MCQ 121 Mark
Source of energy in an ecosystem is:
- ADecomposition of plants and animals by bacteria
- BFermentation of sugars
- CSunlight
- DPhotosynthesis by plants
Answer
View full question & answer→Sunlight
Explanation : Sunlight
Explanation : Sunlight