(i) The phenotypic ratio of incomplete dominance is _____________.
(a) 2 : 1
(b) 1 : 2 : 1
(c) 1 : 1 : 1
(d) 1 : 1 : 2
The number of purines in a segment of DNA molecule is 68. What will be the number of pyrimidines in this segment?
Alcoholic fermentation is brought about by _____________.
Which of the following is not a photosynthetic pigment?
Which one of the following is a stop codon?
Pyruvate undergoes oxidative decarboxylation to produce _____________.
Which day is observed as ‘World Environment Day’?
(a) 21st May
(b) 5 th June
(c) 25th September
(d) 13th December
What is test cross?
What is mycoherbicide?
What is Anticodon?
What is Humification?
How CO2 makes idlies puffy?
What is ecological succession?
Write a short note on ‘Mutational breeding’.
Enlist the advantages of Biogas
Explain ‘Carbon cycle’.
Give the floral adaptations for chiropterophily.
Why the ratio in pleiotropy is 2 : 1? Explain it with example.
Give the schematic representation of TCA cycle.
Differentiate between cyclic and non-cyclic photophosphorylation.
Give diagrammatic representation to show a perfect pairing and any ‘two’
What is double fertilisation? Describe the process in brief.
Define r-DNA technology. Give the basic steps in r-DNA technology and give any ‘three’ examples of the therapeutic products produced by r-DNA technology
If centromere is situated in the middle of the chromosome, it is called ________.
Which one of the following is useful in treatment of burns and wound healing?
(a) Tissue plasminogen activator
(b) Tissue growth factor
(d) Bovine growth hormone
Erythroblastosis foetalis is caused when mother is ______.
(b) With antibody ‘A’
(d) With antibody ‘B’
Deposition of fatty substances in the lining of arteries results in ______.
Struggle between cow and cow for getting grass is called ________.
(a) Inter-specific struggle
(b) Environmental struggle
(c) Struggle against natural calamities
(d) Intra-specific struggle
In which type of adaptation, forelimbs are modified into wings?
(a) Aquatic adaptations
(b) Volant adaptations
(c) Arboreal adaptations
(d) Cursorial adaptations
Mating of two closely related individuals within the same breed is called ______.
Visit of a veterinary doctor to dairy farm is mandatory. Give reasons.
Why aquatic animals can afford to be ammonotelic?
Why PUC is mandatory for vehicles?
Define organic evolution.
What is meant by organic evolution?
Give the genotype of Turner’s syndrome.
Sketch and label T.S. of vein
Give any ‘two’ factors responsible for genetic variation.
Give the name and function for ‘A’ and ‘B’ from the diagram given below
Write a note on ‘artificial acquired active immunity’.
Give the economic importance of ‘fisheries’
Explain sex determination in human beings.
How is sex determined in human beings?
Explain the mechanism of sex determination in human being
Describe steady population with the help of a pyramid.
Illustrate any ‘three’ genes which can be used in gene therapy.
Sketch and label ‘L.S. of human kidney’
With the help of diagrammatic representation, explain the process of gametogenesis
Describe the structure of cerebrum. Add a note on its function.