Model Paper 2 - Rajasthan Board (RBSE) STD 12 Science BIOLOGY Questions - Vidyadip

Question types

Model Paper 2 question types

58 questions across 6 question groups — pick any mix to generate a BIOLOGY paper with step-by-step answer keys.

58

Questions

6

Question groups

5

Question types

M.C.Q (0.5 Marks)

Fill in blanks.

1 Marks Question

1.5 Marks Questions

3 Marks Question

4 Marks Questions

Sample Questions

Model Paper 2 questions

One sample from each question group in this chapter. Select any group above to see the full set with answer keys.

Q 1M.C.Q (0.5 Marks)1 Mark

Which is the in-setu method of conservation-

A
National park
B
Botanical garden
C
Tissue culture
D
Gene engineering

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Q 2M.C.Q (0.5 Marks)1 Mark

Green plants form-

A
First trophic level
B
Second trophic level
C
Third trophic level
D
Food Chain

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Q 3M.C.Q (0.5 Marks)1 Mark

Who coined the term ecology.

A
Linnaeus
B
William
C
Odum
D
Heacal

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Q 4M.C.Q (0.5 Marks)1 Mark

Nif genes are found in-

A
Rhizobium
B
Penicillium
C
Aspergillus
D
Streptococcus

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Q 5M.C.Q (0.5 Marks)1 Mark

Which of the following is a molecular scissor

A
Helicase
B
DNA ligase
C
DNA polymerase
D
Restriction endonuclease

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Q 6Fill in blanks.1 Mark

The population density decrease due to _________

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Q 7Fill in blanks.1 Mark

$\frac{\Delta N_{n}}{\Delta N_{b}}=B$ equation represent the _________

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Q 8Fill in blanks.1 Mark

Expanded form of ELISA is _________

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Q 9Fill in blanks.1 Mark

The milk of transgenic cow Rosie cotnain _________ protein.

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Q 10Fill in blanks.1 Mark

Antibiotic resistance site for _________ are present in $\mathrm{p}^{\text {BR322 }}$ vector.

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Q 111 Marks Question1 Mark

African catfish kept in Indians water reserve for fishing. What were its results.

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Q 121 Marks Question1 Mark

Write one example each of commensalism and mutualisms.

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Q 131 Marks Question1 Mark

Write the function of adenosine deaminase enzyme.

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Q 141 Marks Question1 Mark

What is relation between BOD of sewage water and polluted water.

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Q 151 Marks Question1 Mark

Explain why there are large holes in swiss cheese.

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Q 161.5 Marks Questions2 Marks

Write any two differences between in-situ conservation and ex-situ conservation.

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Q 171.5 Marks Questions2 Marks

Draw a biomass pyramid of the aquatic ecosystem, starting with phytoplanktou. Write the limitations of ecological pyramids.

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Q 181.5 Marks Questions2 Marks

Differentiate between commensalism and mutualism.

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Q 191.5 Marks Questions2 Marks

Meloidegyne incogntia infection causes damage to tobacco plants. Explain the policy used to prevent this infection.

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Q 201.5 Marks Questions2 Marks

Draw a structural diagram of the transcription unit.Write the function of the promoter. Stating the polarity of its strands.

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Q 213 Marks Question3 Marks

What is productivity. What do you mean by net Primary productivity. Differentiate between primary productivity and secondary productivity.

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Q 223 Marks Question3 Marks

Define decomposition. Write the difference between grazing food chain and detritus food chain. Make a pyramid of biomass.

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Q 233 Marks Question3 Marks

What is law of dominance. Explain with the help of monohybrid cross. Write the utility in human of law of dominance.

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Q 243 Marks Question3 Marks

What is law of Independant assortment. Explain with the help of dihybrid cross. Draw the punnet diagram of dihybrid cross.

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Q 253 Marks Question3 Marks

Explain in detail pollen pistil Interaction.

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Q 264 Marks Questions4 Marks

What is opioid drug. Write the chemical name of smack. From which plant is smack obtained. Draw the structure of cannabinoid molecule.

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Q 274 Marks Questions4 Marks

From which plant cocaine obtained. What effect does it have on the human body. Draw the chemical structure of Morphine.

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Q 284 Marks Questions4 Marks

What do you understand by semi conservative method of Replication. Describe with diagram the experiment done by Masselson and Stahl to prove semiconservative replication in DNA.

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Q 294 Marks Questions4 Marks

What is transcription. Write the types of RNA. and explain the transcription process in Proakaryotes with the help of diagram.

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