Practice paper · Mid-term

The intine of a pollen grain is composed of _______________and _______________

1. APectin and cellulose
2. BLignin and suberin
3. CLignin and hemicellulose
4. DPectin and chitin

In homozygous condition, a particular gene has

1. Adifferent alleles on homologous chromosomes.
2. Bno alleles on homologous chromosomes.
3. Csame alleles on homologous chromosomes.
4. Dsame gene on homologous chromosome

Semen’s fluid part is called as seminal plasma ,the composition of this fluid is a mix of I) Seminal vesicles II) Urethra III) Prostrate IV) Bulbourethral gland

1. AI,ii, and iii
2. BI,ii
3. CI,iv
4. DI,iii and ,iv

Grain colour of wheat is determined by three pair of genes as AABBCC is the darkest and aabbcc is the lightest .this is an example of the phenomenon

1. APleiotropy and codominance
2. BPleiotropy and incomplete dominance
3. CPolygenic and quantitative inheritance
4. DPolygenic and qualitative inheritance

which of the following amino acid residue will constitute the histone core

1. ALysine and Arginine
2. BAsparagine and arginine
3. CGlutamine and lysine
4. DAspargine and glutamine

At a particular locus the frequency of allel B is 0.8 and that of allele b is 0.3 what would be the frequency of heterozygotes in a population: (1)

1. A0.32
2. B0.48
3. C0.44
4. D0.24

Match the following Column 1 Column 2 K)cytokine barrier i)yellow fever L)Aedes Ii)acid in stomach M)innate immunity Iii)virus infected cell N)cancer IV)contact inhibition Codes: K L M N

1. AIi I iv iii
2. Biv Ii I iii
3. CIii I ii iv
4. DI iii ii iv

Read the following statements:

1. ABOD and polluting potential are inversely related.
2. BBOD and polluting potential are directly related.
3. CMore the BOD, the easier it is to treat the water.
4. DMore the BOD, more will be the harm if released in a water body. Which of these is true?