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Biology 2011
Q. 6. The gametophyte is not an independent, free-living generation in
- Pinus
- Polytrichum
- Adiantum
- Marchantia
Sol:
In gymnosperms and angiosperms gametophytes are dependent on sporophyte.
Answer: (1)
Q. 7. Important site for formation of glycoproteins and glycolipids is
- Lysosome
- Vacuole
- Golgi apparatus
- 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
- Ribosomes
- Chloroplast
- Mitochondria
- Chromoplast
Sol:
Ribosomes are site of peptide bond formation.
Answer: (1)
Q. 9. In eubacteria, a cellular component that resembles eukaryotic cell is
- Cell wall
- Plasma membrane
- Nucleus
- Ribosomes
Sol:
Lipoprotein cell membrane is found in both but ribosomes are of different kinds.
Answer: (2)
Q. 10. Mutations can be induced with
- Gamma radiations
- Infra Red radiations
- I A A
- 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)