(a) Monocarpellary syncarpous
(b) Monocarpellary apocarpous
(c) Multicarpellary syncarpous
(d) Multicarpellary apocarpous
- Which of the following does not lead to the formation
of clones?
(a) Double fertilisation
(b) Apomixis
(c) Vegetative reproduction
(d) Tissue culture
- Nucellar polyembryony is reported in
(a) Gossypium (b) Triticum
(c) Brassica (d) Citrus.
- Refer the following flowchart and identify the type of
cell division represented by A, B and C.
(a) A-Meiosis-I, B-Mitosis, C-Meiosis-II
(b) A-Meiosis-I, B-Meiosis-II, C-Mitosis
(c) A-Mitosis, B-Meiosis-II, C-Meiosis-I
(d) A-Mitosis, B-Mitosis, C-Meiosis-I
True or False
- In over 60% of angiosperms, the pollen grains are
shed at 3 celled stage.
- Pollen grain exine has prominent apertures called
germ pores, where sporopollenin is present.
- A typical angiosperm embryo sac, at maturity, is
8-celled and 7 nucleate.
- Plant breeders can manipulate pollen-pistil interaction,
even in incompatible pollinations, to get desired
hybrids.
- Though seeds differ greatly, the early stages of
embryogeny is similar in both monocotyledons and
dicotyledons.
- Seeds are produced without fertilisation in apomixis,
which is a form of sexual reproduction.
- Self incompatibility in plants leads to outbreeding and
maintains vigour and vitality of the race.
- The seed of Lupinus arcticus from Arctic Tundra
germinated and flowered after an estimated record
of 10,000 years of dormancy.
24. The coconut water from tender coconut is cellular
and the surrounding white kernel is free-nuclear
endosperm.
25. Some plants can produce both chasmogamous and
cleistogamous flowers.
match The columns
26. Match Column-I with Column-II.
Column-I Column-II
A. Microsporogenesis (i) Pollinia
B. Calotropis (ii) Aristolochia
C. Pitfall mechanism (iii) Urtica
D. Gun-powder (iv) Date palm
mechanism
E. Lever mechanism (v) Viola
F. Nectar guides (vi) Salvia
G. Anemophily (vii) PMC
27. Match Column-I with Column-II. (There can be more
than one match for items in Column-1).
Column-I Column-II
A. Hay fever (i) Vallisneria
B. Hydrophily (ii) Santalum
C. Ategmic (iii) Intine
D. Sporoderm (iv) Definitive nucleus
E. Central cell (v) Onion
F. Adventive (vi) Mirabilis
polyembryony
G. Protogyny (vii) Loranthus
(viii) Amaranthus
(ix) Gloriosa
(x) Groundnut
(xi) Diploid
(xii) Exine
(xiii) Zostera
(xiv) Chenopodium
passage Based Questions
28.(A) Complete the given passage with appropriate words
or phrases.
(a) Double fertilisation is found only in (i) and was
first discovered by (ii) in 1898 in (iii) and (iv).
(b) During this, one male gamete fuses with the
oosphere to form zygote, which is called (v)
fertilisation, while the second male gamete fuses
with diploid secondary nucleus, which is called
(vi) fertilisation.
