1. In
Tape Grass (Vallisenaria)
a. both
male and female flowers break from the plant and float on the surface of water
b. only
the female flowers break from the plant while the male flowers are brought to
the surface by the long stalks
c.
only
the male flowers break from the plant and rise to the surface of water while
the female flowers are brought to the surface by the long pedicels
d. any
of the two types of flowers can break
2. A
normal plant suddenly begins multiplying parthenogenetically. The number of
chromosomes of the second viable generation as compared to the parent will be
a.
same
b. one
half
c. one
fourth
d. double
3. Which
of the plant cells will show totipotency ?
a. sieve
tubes
b. xylem
vessels
c.
meristem
d. cork
cells
4. Self
pollination is prevented by
a. dichogamy
b. self
sterility
c. herkogamy
d. all
the above
5. Entomophily
is pollination through the agency of
a.
water
b. insects
c. wind
d. water
6. Cleistogamous
flowers are
a. male
flowers which never open
b. female
flowers which never open
c.
bisexual
flowers which never open
d. open
bisexual flowers which perform self pollination in bud condition
7. Protandry
is
a. maturation
of stigma earlier than anthers of the same flower
b. maturation
of stigma and anthers at the same time
c.
maturation
of anthers earlier than stigma of the same flower
d. pollination
of the stigma by the anther of same flower
8. Pollen
grain is related to embryo sac as
a. sperm
to embryo
b.
male
gametophyte to female gametophyte
c. male
gametophyte to egg
d. sperm
to female gametophyte
9. Genotypically
the pollen grains produced by an anther belong to
a. one
type
b. Two
types
c.
many
types
d. all
the above
10. In
angiosperms, a mature male gametophyte is formed from a pollen mother cell
through
a. two
meiotic divisions
b. three
mitotic divisions
c.
one
meiotic and two mitotic divisions
d. a
single meiotic division
11. Which
is wrong
a.
seed
cannot be formed after one fertilization
b. seed
is formed after one fertilization
c. seed
is formed without double fertilization
d. fruit
is produced after double fertilization
12. In
a grafted plant, stock has 48 chromosomes while scion has 24 chromosomes, The
chromosome number for root cells and eggs are
a. 48
and 24
b. 24
and 24
c. 24
and 12
d.
48
and 12
13. Function
of guiding and attracting pollen tube is done by
a. egg
cell
b.
filiform
apparatus
c. antipodal
cells
d. secondary
nucleus
14. How
many of these seeds retain a part of endosperm as it
is not completely used up during embryo development
wheat, maize , pea, groundnut,
barley, castor, sunflower
a.
3
b.
2
c.
6
d.
5
15. How many mitotic
and how many meiotic divisions are needed to form a embryo sac from a megaspore mother cell?
a.
One mitotic and three meiotic
b.
three mitotic and three meiotic
c.
three mitotic and one
meiotic
d.
Two mitotic and three meiotic
2 Comments
Nice questions..
ReplyDeleteThanks..
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