2017 NEET Biology Questions and Answers (31-40)

31. Which one of the following is related to Ex-situ conservation of threatened animals and plants?
 1. Wildlife Safari parks
 2. Biodiversity hot spots
 3.  Amazon rainforest
 4. Himalayan region

32. Select the mismatch
 1. Pinus  - Dioecious
 2. Cycas - Dioecious
 3. Salvinia- Homosporous
 4. Equisetum – Homosporous

33. Which of the following facilitates opening of stomatal aperture ?
1. Contraction of outer wa1l of guard cells
2. Decrease in turgidity of guard cells
3. Radial orientation of cellulose microfibril in the cell wall of guard cells
4. Longitudinal orientation of cellulose microfibrils in the cell wall of guard cells

34. The association of histone H1 with a nucleosome indicates :
1. Transcription is occurring.
2. DNA replication is occurring
3. The DNA is condensed into a Chromatin  Flbre.
4.  The DNA double helix is exposed.

35. DNA fragments are:
1.  Positively charged
2. Negatively charged
3.  Neutral
4.  Either Positively or negatively charged depending on their size

36. Capacitation occurs in:
1.  Rete testis
2. Epididymis
3. Vas deferens
4.  female reproductive tract

37. Which ecosystem has the maximum biomass?
1.  Forest ecosystem
2. Grassland ecosystem
3. Pond ecosystem
4 Lake ecosystem

38. A disease caused by an autosomal primary non-disiunction is :
1. Down's  Syndrome
2. Klinefelter's Syndrome
3. Tumer's  Syndrome
4. Sickle Cell Anemia

39. Life cycle of Ectocarpus and Fucus respectively
1.  Haplontic, Diplontic
2.  diplontic, haplodiplontic
3. haplodiplontic, diplontic
4. Haplodiptontic Haplontic


40.  If there are 999 bases in an RNA that codes for a protein with 333 amino acids, and the base at position 901 is deleted such that the length of the RNA becomes 998 bases, how many codons will be altered ?
1. 1
2. 11
3. 33

4. 333
2017 NEET Biology Questions and Answers (31-40)
Answers:
31.  1. Wildlife Safari parks
32.  1. Pinus  - Dioecious
33. 3. Radial orientation of cellulose microfibril in the cell wall of guard cells
34. 3. The DNA is condensed into a Chromatin  Flbre.
35. 2. Negatively charged
36. 4.  female reproductive tract
37. 1.  Forest ecosystem
38. 1. Down's  Syndrome
39. 3. haplodiplontic, diplontic
40. 3. 33

.

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