(d) Dispersed in cytosol
- Which part of the world has high density of
organisms?
(a) Deciduous forest (b) Grasslands
(c) Savannas (d) Tropical rain forest - The characters of monocot stem anatomy are
i. Sclerenchymatous hypodermis
ii. a large number of scattered vascular bundles
iii. bundle sheath is made up of parenchyma
iv. a large,conspicuous parenchymatous ground
tissue
v. peripheral vascular bundles are generally larger
in size and central vascular bundles are smaller in
size.
a) i, ii, iii b) ii, iii, iv
c) i, ii, iv d) i, ii, v - Stomatal opening is under the control of
(a) Epidermal cells
(b) Palisade cells
(c) Spongy parenchyma cells
(d) Guard cells - The compound which is mostly used to form
amino acid through transamination is
(a) α ketoglutaric acid (b) Glutamine
(c) Glutamic acid (d) Aspartic acid - The discovery of gibberellins is related with one
of the following:
(a) Bakane disease of oats
(b) Bakane disease of rice
(c) Bakane disease of maize
(d) Bakane disease of Ragi - A prokaryotic autotrophic nitrogen fixing
symbiont found
(a) Pisum (b) Alnus
(c) Cycas (d) Cicer - Match the column I and column II and select the
correct option using the codes given below
Column I Column II
A. Pistils fused together 1. Gametogenesis
B. Formation of gametes 2. Pistillate
C. Hyphae of higher 3. Syncarpous
ascomycetes
D. Unisexual 4. Dikaryotic
female flower
(a) A-4, B-3, C-1, D-2
(b) A-2, B-1, C-4, D-3
(c) A-1, B-2, C-4, D-3
(d) A-3, B-1, C-4, D-2
33. Haemophilia is most commonly seen in human
males than in human females because
(a) a greater proportion of girls die in infancy
(b) this disease is due to a Y-linked recessive
mutation
(c) this disease is due to a X-linked recessive
mutation
(d) this disease s due to an X-linked dominant
mutation
34. A perennial plant differs from biennial in
(a) Having underground perennating structure
(b) Having asexual reproductive structures
(c) Being tree species
(d) Not dying after seasonal production of flowers
35. What does the diagram represent?
(a) Anaphase I of meiosis I
(b) Prophase II of meiosis II
(c) Prophase I of meiosis
(d) Prophase of mitosis- During succession :-
(a) Species diversity and biomass increase but
humus decrease
(b) Species diversity and humus increase but
biomass decrease
(c) Humus and biomass increase but species
diversity decreases
(d) Species diversity, humus and biomass increase - Gel electrophoresis is used for
(a) Construction of recombinant DNA by joining
with cloning vectors
(b) Cutting of DNA into fragments
(c) Separation of DNA fragments according to
their size
(d) Isolation of DNA molecule - Which of the following key factors make the
plasmid, the vector in genetic engineering?
(a) It is resistant to restriction enzymes
(b) It is resistant to antibiotics
(c) Its ability to carry a foreign gene
(d) Its ability to cause infection in the host