Biology Test By Dr Biswas of BBIPL 1 of 3

The cells which help in rolling and unrolling of leaf lamina in grasses are /
Complementary cells
Motor cells
Passage cells
Companion cells
Clover leaf shaped nucleic acid is /
DNA
m-RNA
r-RNA
t-RNA
Blood circulation in human body was discovered by
William Harvey
Willstater and Stahl
Weiner
Karl Landsteiner
Malpighian cells are
Brachysclereids
Macrosclereids
Astrosclereids
Trichosclereids
Who coined the term “Genetics”? /
Mendel
Johanssen
Morgan
Knight
Human placenta is
haemoendohelial, monodiscoidal and nondeciduate
haemochorial, monodiscoidal anddeciduate
syndesmochorial, monodiscoidal and deciduate
superficial,discoidal and deciduate
The seat of origin of the lateralroots is
Epidermis
Cortex
Endodormis
Pericycle
Reverse transcriptase enzymes are employed in
to cut DNA molecule
Join DNA fragments
Synthesis of complementary DNA from m-RNA
Introduce recombinant DNA into host
The substance used in the tissue culture media for shoot induction in the callus is /
ABA
GA3
IBA
kinetin
Spirullina is an example of
Biopesticide
Biofertilizer
Edible fungi
single cell protein
The diploid phase in the life cycle of Spirogyra is represented by
female gamete
Zygospore
Aplanospore
akinete
Which among the following is the real product of the honey bee?
Honey
Propolis
Pollen
Bee wax
Which of these is correct match/
1-indicate early wood 2-indicate late wood
1-indicate late wood 2-indicate early wood
1-indicate heartwood 2-indicate sap wood
1-indicate alburnum 2-indicate sap wood
High milk yielding varieties of cows are obtained by
Use of surrogate mothers
Super ovulation
Artificial insemination
All of these
Sella turcica is a
skull bone
cavity of ear
bony cage for lodging pituitary
bony cage for lodging diencephalon
Pebrine is a disease of
Silk worm
Lac insect
Honeybee
Fish
According to starch hydrolysis theory of stomatal movement
increase of pH results in conversion of starch to sugar
decrease of pH results in conversion of starch to sugar
increase of pH results in decrease of TP
decrease of pH results increase of TP
Alleles for same trait occupy_______________
same locus on different chromosomes
same locus on homologous chromosomes
different loci on same chromosomes
different loci on heterologous chromosomes
Holstein-Frisien cattle were developed from the breeds of
Denmark
Netherlands
English Channel
Switzerland
Proline is………. amino acid
an aromatic
a basic
an acidic
a heterocyclic