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Recent questions tagged sec-a
Questions
As a student of biology what would you suggest for the couple who does not have any children?
cbsc
class 12
biology
reproductive health
sec-a
asked
Apr 24, 2019
by
priyanka.clay6
1
answer
LNG-20 is a type of IUD. In what additional way does it function as a contraceptive?
cbsc
class 12
biology
reproductive health
sec-a
asked
Apr 24, 2019
by
priyanka.clay6
1
answer
Is it necessary to ban amniocentesis? Why?
cbsc
class 12
biology
reproductive health
sec-a
asked
Apr 24, 2019
by
priyanka.clay6
1
answer
Removal of gonads cannot be considered as contraceptive options, why?
cbsc
class 12
biology
reproductive health
sec-a
asked
Apr 24, 2019
by
priyanka.clay6
1
answer
As long as the mother lactates fully, chances of conception are almost nil-Why?
cbsc
class 12
biology
reproductive health
sec-a
asked
Apr 24, 2019
by
priyanka.clay6
1
answer
What was the old name given for the programme RCH of today? When was it initiated in India?
cbsc
class 12
biology
reproductive health
sec-a
asked
Apr 24, 2019
by
priyanka.clay6
1
answer
State which law of Mendelian inheritance is expressed in the following diagram?
cbsc
class 12
biology
principles of inheritance
sec-a
asked
Apr 23, 2019
by
priyanka.clay6
1
answer
What is a point mutation? Give an example
cbsc
class 12
biology
principles of inheritance
sec-a
asked
Apr 23, 2019
by
priyanka.clay6
1
answer
Briefly mention the contributions of T.H.Morgan in genetics.
cbsc
class 12
biology
principles of inheritance
sec-a
asked
Apr 23, 2019
by
priyanka.clay6
1
answer
Write the scientific name of the organism which T.H. Morgan used in his genetic experiments.
cbsc
class 12
biology
principles of inheritance
sec-a
asked
Apr 23, 2019
by
priyanka.clay6
1
answer
Who had proposed the chromosomal theory of inheritance?
cbsc
class 12
biology
principles of inheritance
sec-a
asked
Apr 23, 2019
by
priyanka.clay6
1
answer
Write the possible genotypes Mendel got when he crossed $F_1$ Tall pea plants with a dwarf pea plant.
cbsc
class 12
biology
principles of inheritance
sec-a
asked
Apr 23, 2019
by
priyanka.clay6
1
answer
State the difference between a gene and an allele.
cbsc
class 12
biology
principles of inheritance
sec-a
asked
Apr 23, 2019
by
priyanka.clay6
1
answer
Which of the following is a dominant & recessive trait in garden pea - Tall stem, constricted pod.
cbsc
class 12
biology
principles of inheritance
sec-a
asked
Apr 23, 2019
by
priyanka.clay6
1
answer
If a human zygote has XXY *** chromosomes along with 22 pairs of autosomes. What *** will the individual be? Name the syndrome
cbsc
class 12
biology
principles of inheritance
sec-a
asked
Apr 23, 2019
by
priyanka.clay6
1
answer
In a monohybrid cross the genotypic and phenotypic ratio is 1:2:1. What type of Inheritance is it an example of? Give one example
cbsc
class 12
biology
principles of inheritance
sec-a
asked
Apr 23, 2019
by
priyanka.clay6
1
answer
Why did Mendel select pea plant for his experiment?
cbsc
class 12
biology
principles of inheritance
sec-a
asked
Apr 23, 2019
by
priyanka.clay6
1
answer
Mendel‘s work was rediscovered by three scientists independently. Name any two of them.
cbsc
class 12
biology
principles of inheritance
sec-a
asked
Apr 23, 2019
by
priyanka.clay6
1
answer
What type of growth status the following pyramid represents ?
cbsc
class 12
biology
organisms and population
sec-a
asked
Apr 23, 2019
by
priyanka.clay6
1
answer
How is competition avoided in nature?
cbsc
class 12
biology
organisms and population
sec-a
asked
Apr 19, 2019
by
priyanka.clay6
1
answer
Gause's competitive exclusion principle, where does this apply?
cbsc
class 12
biology
organisms and population
sec-a
asked
Apr 19, 2019
by
priyanka.clay6
1
answer
How is liver fluke adapted to parasitism ?
cbsc
class 12
biology
organisms and population
sec-a
asked
Apr 19, 2019
by
priyanka.clay6
1
answer
What is brood parasitism?
cbsc
class 12
biology
organisms and population
sec-a
asked
Apr 19, 2019
by
priyanka.clay6
1
answer
Why is female mosquito not considered a parasite?
cbsc
class 12
biology
organisms and population
sec-a
asked
Apr 19, 2019
by
priyanka.clay6
1
answer
What is the relationship between egret and grazing cattle? Why?
cbsc
class 12
biology
organisms and population
sec-a
asked
Apr 19, 2019
by
priyanka.clay6
1
answer
How is orchid ophrys pollinated ?
cbsc
class 12
biology
organisms and population
sec-a
asked
Apr 19, 2019
by
priyanka.clay6
1
answer
Will the distribution level of species be affected by gradual increase in temperature? Say briefly.
cbsc
class 12
biology
organisms and population
sec-a
asked
Apr 19, 2019
by
priyanka.clay6
1
answer
Predators are prudent. Why?
cbsc
class 12
biology
organisms and population
sec-a
asked
Apr 19, 2019
by
priyanka.clay6
1
answer
Write what do phytophagous insects feed on?
cbsc
class 12
biology
organisms and population
sec-a
asked
Apr 19, 2019
by
priyanka.clay6
1
answer
An organism has to overcome stressful condition for a limited period of time. Which strategies can it adopt to do so?
cbsc
class 12
biology
organisms and population
sec-a
asked
Apr 19, 2019
by
priyanka.clay6
1
answer
In biological control method, one living organism is used against another to check its uncontrolled growth. Which kind of population interaction is involved in this?
cbsc
class 12
biology
organisms and population
sec-a
asked
Apr 19, 2019
by
priyanka.clay6
1
answer
Calculate the death rate if 6 individuals in a laboratory population of 60 fruit flies died during a particular week.
cbsc
class 12
biology
organisms and population
sec-a
asked
Apr 19, 2019
by
priyanka.clay6
1
answer
Define diapause. Which organisms exhibit it?
cbsc
class 12
biology
organisms and population
sec-a
asked
Apr 19, 2019
by
priyanka.clay6
1
answer
Fresh water animals are unable to survive for long in sea water. Give reason.
cbsc
class 12
biology
organisms and population
sec-a
asked
Apr 19, 2019
by
priyanka.clay6
1
answer
What is the unit of productivity in terms of energy and weight respectively?
cbsc
class 12
biology
organisms and population
sec-a
asked
Apr 19, 2019
by
priyanka.clay6
1
answer
State Allen's rule.
cbsc
class 12
biology
organisms and population
sec-a
asked
Apr 19, 2019
by
priyanka.clay6
1
answer
"Abingdon tortoise in Galapagos islands became extinct within a decade after goats were introduced in that island". Can you cite the possible reason for the same?
cbsc
class 12
biology
organisms and population
sec-a
asked
Apr 19, 2019
by
priyanka.clay6
1
answer
Two closely related species competing for the same resources cannot co-exist indefinitely. State the principle which supports this phenomenon.
cbsc
class 12
biology
organisms and population
sec-a
asked
Apr 19, 2019
by
priyanka.clay6
1
answer
Cattle or goats never graze on weeds of calotropis. Give reasons.
cbsc
class 12
biology
organisms and population
sec-a
asked
Apr 19, 2019
by
priyanka.clay6
1
answer
People living in higher altitudes have higher RBC count. Give reasons
cbsc
class 12
biology
organisms and population
sec-a
asked
Apr 19, 2019
by
priyanka.clay6
1
answer
An orchid plant is growing on a mango tree. How do you describe the interaction between the orchid and the mango tree?
cbsc
class 12
biology
organisms and population
sec-a
asked
Apr 19, 2019
by
priyanka.clay6
1
answer
Most living organisms cannot survive at temperatures above $45^{\circ}c$. How are some microbes able to live in habitats with temperature beyond $100^{\circ}c$?
cbsc
class 12
biology
organisms and population
sec-a
asked
Apr 19, 2019
by
priyanka.clay6
1
answer
Complete the labels X,Y and K :
cbsc
class 12
biology
molecular basis of inheritance
sec-a
asked
Apr 18, 2019
by
priyanka.clay6
1
answer
The diagram depicts a stage in transcription. Mention the stage and indicate A .
cbsc
class 12
biology
molecular basis of inheritance
sec-a
asked
Apr 18, 2019
by
priyanka.clay6
1
answer
Write the anticodon of the given t-RNA
cbsc
class 12
biology
molecular basis of inheritance
sec-a
asked
Apr 18, 2019
by
priyanka.clay6
1
answer
Write the name of the bond ?
cbsc
class 12
biology
molecular basis of inheritance
sec-a
asked
Apr 18, 2019
by
priyanka.clay6
1
answer
Complete the following, label A,B and C and name the process(Dogma).
cbsc
class 12
biology
molecular basis of inheritance
sec-a
asked
Apr 18, 2019
by
priyanka.clay6
1
answer
Amino acid Arginine if coded by CGU; how many codons can code for this amino acid?
cbsc
class 12
biology
molecular basis of inheritance
sec-a
asked
Apr 17, 2019
by
priyanka.clay6
1
answer
Write the full form of the terms: 'ESTs' and 'SA' concerning to human genome project.
cbsc
class 12
biology
molecular basis of inheritance
sec-a
asked
Apr 17, 2019
by
priyanka.clay6
1
answer
What is the difference between RNAs and RNase ?
cbsc
class 12
biology
molecular basis of inheritance
sec-a
asked
Apr 17, 2019
by
priyanka.clay6
1
answer
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