“Pollen grains are well preserved as fossils” because of the presence of sporopollenin” as Statement I : Sporopollenin is the most resistant organic material known. Statement II : No enzyme that degrades sporopollenin is so far known.
a.
Both the Statements I and II are correct
b.
Statement I is correct and Statement II is incorrect
c.
Both the Statements I and II are incorrect
d.
Statement I is incorrect and Statement II is correct
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Q2mcq1 mark
The process of transformation of spermatids into sperms is called
a.
Spermatogenesis
b.
Spermiogenesis
c.
Spermiation
d.
Oogenesis
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Q3mcq1 mark
Which one among the following is essential for the maintenance of endometrium and for the implantation of fertilized ovum?
a.
Estrogen
b.
Progesteron
c.
LH and FSH
d.
Androgens
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Q4mcq1 mark
Select the one among the given that is a probable reason for explosive growth of population in India.
a.
A rapid increase in MMR
b.
A rapid increase in IMR
c.
Increase in the number of people in reproducible age
d.
A rapid increase in death rate
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Q5mcq1 mark
Which one among the following is a contraceptive method that involves no medicine or device?
a.
Condom
b.
Saheli
c.
Cervical caps
d.
Coitus interruptus
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Q6mcq1 mark
Which one among the following ART can be used to rectify if the infertility is due to low sperm count?
a.
GIFT
b.
IUT
c.
ZIFT
d.
IUI
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Q7mcq
Failure of segregation of chromatids during cell division cycle results in ____________
a.
Haploidy
b.
Diploidy
c.
Aneuploidy
d.
Polyploidy
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Q7mcq1 mark
Which one among the given is a symbol used in human pedigree analysis for consanguineous mating?
a.
Box connected to circle by a single horizontal line
b.
Box connected to circle by double horizontal line
c.
Empty box
d.
Empty circle
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Q8mcq
Which one among these represent the flow of genetic information?
a.
mRNA → DNA → Protein
b.
Protein → mRNA → DNA
c.
DNA → mRNA → Protein
d.
DNA → Protein → mRNA
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Q9mcq
If the change in gene frequency occurs by chance, it is called
a.
Gene flow
b.
Mutation
c.
Genetic recombination
d.
Genetic drift
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Which is the test that can be suggested among the given for a patient with symptoms such as - sustained high fever (39°C – 40°C), weakness, stomach pain, constipation, headache and loss of appetite?
a.
Widal test
b.
ELISA
c.
CT
d.
MRI
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Analyse the table given in relation to the human evolution and write the scientific name for A and B respectively.
Features of Evolutionary man | Scientific Name
First human like being the hominid with brain capacity between 650 cc – 800 cc | A
Large brain capacity around 900 cc and probably ate meat | B
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Give suitable terms for the following examples/statements with respect to population interactions:
a) The method Mediterranean orchid ophrys employs to get pollinated.
b) Species facing competition might evolve mechanism that promote co-existence rather than exclusion.
c) The parasitic bird lays eggs in the nest of its host and lets the host bird incubate them.
d) The interaction between cattle egret and grazing cattle.
e) The interaction in which one species is harmed while, the other is unaffected.
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Read the below given statement and answer the given questions: "A breeder is interested in crossing different species of plants to combine desirable characters to produce commercially superior varieties".
a) What major approach in "Crop improvement programme" would you suggest to the breeder to achieve this goal?
b) Discuss in detail the techniques involved in the process.
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Analyse the below given transcription Unit diagram and answer the given questions.
a) Name the Parts A and B in the diagram.
b) Which site of transcription unit provides the binding site for RNA polymerase?
c) Write the sequence of bases of the mRNA transcribed from the template given in the diagram.
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"Our body is provided with different types of non-specific immunity barriers at the time of birth". Justify the above statement with suitable examples.
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