(a) 2.5 min (b) 2.5 hours
(c) 2.5 seconds (d) 5.0 min
- Which bacteria nitrite is converted into nitrate?
(a) Nitrobacter (b) Nitrosomonas
(c) Agrobacterium (d) Pseudomonas - Which one of the following acid is derivative of
Caratenoids?
(a) IAA (b) GA (c) ABA (d) NAA - Which one of the following is known as Reptiles
or Pandas of plant kingdom?
(a) Cycas (b) Rhynia
(c) Asteroxylon (d) Gnetum - In the legume seed, food is stored in
(a) Endosperm (b) Cotyledon
(c) Seed coats (d) Perisperm - Two nonallelic genes produce the new phenotype
when present together but fail to do so
independently, it is called
(a) Epistasis (b) Complementary gene
(c) Polygene (d) Noncomplementary
gene - The ovary is half inferior in flowers of
(a) Peach (b) Cucumber
(c) Cotton (d) Guava - The structures that help some bacteria to attach to
rocks and or host tissue are................
(a) Holdfast (b) Rhizoids
(c) Fimbriae (d) Mesosomes - Which of the following would appear as the
pioneer organisms on bare rocks?
(a) Mosses (b) Green algae
(c) Lichens (d) Liverworts - In Operon concept, regulator gene functions as
(a) Regulator (b) Inhibitor
(c) Repressor (d) All of these
38.Which one of the following palindromic base
sequences in DNA can be easily cut at about the
middle by some particular restriction enzyme?
(a) 5’ - CGTTCG - 3’ 3’ - ATCGTA - 5’
(b) 5’ - GAATTC - 3’ 3’ - CTTAAG - 5’
(c) 5’ - CACGTA - 3’ 3’ - CTCAGT - 5’
(d) 5’ - GATATG - 3’ 3’ - GTACTA - 5’
39. In which of the following phloem parenchyma
is absent
(a) Banyan (b) Maize
(c) Sunflower (d) Guava
40. Match the items in Column I and column II then
choose correct order.
Column I Column II
A. Streptomycin 1. Antibiotic
B. Spirulina 2. Single celled protein
C. Rhizobium 3. Nitrogen fixing
D. Trichoderma 4. Biocontrol
(a) A - 1, B - 2, C - 3, D - 4
(b) A - 2, B - 1, C - 4, D - 3
(c) A - 4, B - 1, C - 3, D - 2
(d) A - 2, B - 1, C - 3, D - 4
41. Photorespiration occurs in
(a) C 3 plants (b) All plants
(c) Algae only (d) C 4 plants
42. Tropical forests occur in India
(a) Jammu and Kashmir
(b) Rajasthan
(c) Kerala and Assam
(d) Forest do not occur in India
43. Endodermis is considered as a ‘biological check
post’ because
(a) it is present between stele and pericycle
(b) it is barrel-shaped and do not have
intercellular spaces
(c) it is rich in starch grains and have starch sheath
(d) it possesses ligno-suberised Casparian strip.
44. In plants capillarity is aided by the
(a) Small diameter of tracheids
(b) Large diameter of the tracheids
(c) Small diameter of the vessel elements
(d) Both A and C
45. In the given pedigree, assume that no outsider
marrying in, carry a distance. Write the genotypes
of C and D
(a) XCY and XCXC (b) XXC and XY
(c) XY and XCXC (d) XCXC and XCX