AIIMS Botany Class 12 Questions

Which two are nucleotides :

Gene library or DNA library has collection of

Which of the following are homosporous

Select the correct option w.r.t. Age pyramids.

Identify a, b, and c

Match the column I and II

Select the correct option regarding genetic code of Glycine

Genes on same chromosome can be

Who discovered DNA fingerprinting

Which of the following switch off lac operon

Which of the following is incorrect

Match the following:

m-RNA is formed by

Percentage of (G + C) is

Arrange them on the basis of increasing size:

The process of removal of anther from the flower bud before it dehisces is called as

Which of the following is a sex linked character

Select the correct option w.r.t. Age pyramids.

Select the correct match | (I) | (II) | (III) | | :--- | :--- | :--- | | (a) + | (i) - | (P) Amensalism | | (b) - | (ii) - | (Q) Commensalism | | (c) - | (iii) 0 | (R) Predation | | (d) + | (iv) 0 | (S) Competition |

Select the correct match (I) (II) (III) (a) + (i) – (P) Amensalism (b) – (ii) – (Q) Commensalism (c) – (iii) 0 (R) Predation (d) + (iv) 0 (S) Competition

The genetic code of proline are :

The coding strand of DNA is : 5′AATTCAAATTAGG₃′ What is the sequence of mRNA?

135. Match the column-I and column-II Column-I (i) Viroid (ii) Cell (iii) Virus (iv) Triple helical

Correct sequence for Alanine code:

Match the following:

The genetic codes of arginine are:

Which mutation causes change in allele?

Which of the following is correct for above diagrams:

Select the wrong statement:

Which is not possible by mutation:

Assertion: Down syndrome, Klinfelter syndrome and Turner syndrome are chromosomal disorders. Reason: In Klinfelter syndrome females are sterile.

Match the Column-I with II

Choose the correct statement.

Match the correct column

Assertion : In eukaryotes, both intron and exon are transcribed to form hnRNA Reason : Splicing is required in prokaryotes

Assertion: Parthenocarpy involves formation of seedless fruit. Reason: Apomixis occurs without fertilization

Assertion : Heterospory and retention of female gametophyte are responsible for origin of seed habit in Selaginella Reason: Psilotum is a living fossil

Identify the parts labeled in the diagram.

Which statement is correct for apomixes?

Amylopectin is

Assertion: In eukaryotes, transcription occurs in nucleus Reason: In bacteria, transcription and translation occurs in cytoplasm.

Assertion: Fig and wasp cannot complete their life cycle without each other. Reason: It is mutualistic relationship.

Polysaccharides can be tested by

Which of the following is correct mode of reproduction

Assertion: In commensalism, one organism is benefitted and other is unaffected Reason: Cattle egret bird and cattle is an example of commensalism

Which of the following are all Nucleotides

Match the column

Which of the following is correct about biogas –

Given below are the life span of the organisms. Find the correct option:

Find the correct palindromic sequence: 5'ATTGCAAT3'