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 wall 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
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