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• Biology

Biology 2011

  

Q. 6. The gametophyte is not an independent, free-living generation in

1. Pinus
2. Polytrichum
3. Adiantum
4. Marchantia

Sol:

In gymnosperms and angiosperms gametophytes are dependent on sporophyte.

Answer: (1)

 

Q. 7. Important site for formation of glycoproteins and glycolipids is

1. Lysosome
2. Vacuole
3. Golgi apparatus
4. Plastid

Sol:

Golgi complex performs glycosyl transferase activity for addition of glycans on lipids and proteins.

Answer: (3)

 

Q. 8.Peptide synthesis inside a cell takes place in

1. Ribosomes
2. Chloroplast
3. Mitochondria
4. Chromoplast

Sol:

Ribosomes are site of peptide bond formation.

Answer: (1)

 

Q. 9.   In eubacteria, a cellular component that resembles eukaryotic cell is

1. Cell wall
2. Plasma membrane
3. Nucleus
4. Ribosomes

Sol:

Lipoprotein cell membrane is found in both but ribosomes are of different kinds.

Answer: (2)

 

Q. 10. Mutations can be induced with

1. Gamma radiations
2. Infra Red radiations
3. I A A
4. Ethylene

Sol:

Mutation can be induced with high energy radiations like UV rays, gamma rays, which cause change in the structure of DNA.

Answer: (1)