Biology Times March 19
(a) Paramaecium are both aquatic and terrestial
(b) Cilia are helpful for Paramecium both in
locomation and also in reproduction
(c) Paramecium has a cavity that opens to the
outside of the cell surface
(d) Cilia are not locomotary in function instead
helpful only in reproduction.
- Prokaryotic cell is usually
(a) 0.1-2.0mm (b) 10-100mm
(c) 100-200mm (d) None of these
- Polysome is formed by
(a) A ribosome with several subunits
(b) Several ribosomes attached to single m RNA
(c) Ribosomes attached to each other in a linear
arrangement
(d) Many ribosomes attached to strand of cell
wall
- In the below diagram there are series of events
of a cell ,what physiological activity is being
observed
(a) Endosmosis (b) Plasmolysis
(c) Diffusion (d) No change
- In land plants, the guard cells differ from other
epidermal cells in having
(a) Mitochondria
(b)Endoplasmic reticulum
(c) Chloroplast
(d) Cytoskeleton
- Assertion: A coenzyme or metal ion tightly
bound to enzyme protein is called prosthetic
group.
Reason: A complete catalytically active enzyme
together with its bound prosthetic group is called
apoenzyme.
(a) If both Assertion and Reason are correct and
Reason is the correct explanation for
Assertion.
(b) If both Assertion and Reason are correct, but
Reason is not the correct explanation for
Assertion.
(c) If Assertion is true but Reason is false.
(d) If both Assertion and Reason are false.
- Match the following
Column I Column II
A. Cotton fibre 1. chitin
B. Exoskeleton of cockroach 2. glycogen
C. Liver 3. starch
D. Peeled potato 4. cellulose
- adenylic acid
(a) A - 4, B - 1, C - 2, D - 3
(b) A - 4, B - 1, C - 2, D - 3
(c) A - 2, B - 3, C - 4, D - 1
(d) A - 1, B - 4, C - 3, D - 2
- Which pigment system is inactivated in red drop
(a) PS I and PS II (b) PS I
(c) PS II (d) None of the above
- Dicot which follow C 4 pathway is
(a) Wheat (b) Amaranthus
(c) Mango (d) Maize
- If a cell contains 36 chromosomes, what will
be the number of chromosomes in each of the 4
daughter cells resulting from meiosis?
(a) 36 (b) 18
(c) 9 (d) 4
- Kreb’s cycle is also called metabolic sink as it is
common pathway for
(a) Proteins and fats only
(b) Carbohydrates and organic acids only
(c) Carbohydrates and fats only
(d) Carbohydrates, fats and proteins
- One set of the plant was grown at 12 hour day and
12 hour night period cycles and it flowered while
in other set night phase was interrupted by flash
light and it did not produce flower under which
one of the following categories will you like to
place this plant.
(a) Long day plants (b) Short day plants
(c) Day neutral plants (d) None of these
- Offspring formed by sexual reproduction exhibit
more variation than those formed by asexual
reproduction. Reason is
(a) Greater amount of DNA is involved in sexual
reproduction
(b) Sexual reproduction is a lengthy process
(c) Genetic material comes from parents of two
different species
(d) Gametes of parents have qualitatively different
genetic composition
- Whiptail lizards show
(a) Periodic parthenogenesis
(b) Paedogenic parthenogenesis
(c) Obligatory parthenogenesis
(d) incomplete parthenogenesis
