CBSE
Multiple Choice QuestionsWhich one of the following is considered important in the development of seed habit?
Homospory
Heterospory
Dependent sporophyte
Free living gametophyte
Free living gametophyte
The residual persistent nucellus in the seed of black pepper and beet is called
Perisperm
Endosperm
Pericarp
Scutellum
Scutellum
Consider the following statements with respect to flowering plants
(A) The pollen grains represent the male gametes
(B) The functional megaspore developing into the embryo sac represent the female gamete
(C) Transfer of pollen grains from anther to the stigma of different plant is known as xenogamy
(D) Transfer of pollen grains from anther to the stigma of another flower of the same plant is known as geitonogamy
Of the above statements
(A) and (B) alone are correct
(A) and (C) alone are correct
(A) and (D) alone are correct
(B) and (C) alone are correct
(B) and (C) alone are correct
Water pollinated plants have
Bright colour
Fragrance
Nectar
Tassels
Tassels
Monocotyledonous seed consists of one large shield shaped cotyledon called
Coleoptile
Testa
Tegmen
Hilum
Hilum
Consider the following statements with respect to pollen grains
(a) The exine is a thin and continuous layer made up of cellulose and pectin
(b) The hard outer layer called the exine is made up of sporopollenin
(c) Sporopollenin is present ingerm pores
(d) The exine exhibits a fascinating array of patterns and designs
Of the above statements-
(a) and (b) alone are correct
(a) and (c) alone are correct
(b) and (d) alone are correct
(b) and (c) alone are correct
(b) and (c) alone are correct
Which one of the following statements regarding post-fertilization development in flowering plants is incorrect?
Zygote develops into embryo
Central cell develops into endosperm
Ovules develop into embryo sac
Ovary develops into fruit
What is the fate of the male gametes discharged in the synergid?
All fuse with the egg
One fuses with the egg, other(s) fuse(s) with synergid nucleus.
One fuses with the egg and other fuses with central cell nuclei.
One fuses with egg other(s) degenerate (s) in the synergid.
Persistent nucellus in the seed is known as
Perisperm
Hilum
Tegmen
Chalaza
Placentation in which ovules develop on the inner wall of the ovary or in peripheral part, is
Axile
Parietal
Free central
Basal
