10 MCQ on Plant Science for various Agriculture Exams✅ Part -75

14. In plants, meiosis takes place when there is a change from
    (a) Sporophyte → Sporophyte
    (b) Gametophyte → Gametophyte
    (c) Gametophyte → Sporophyte
    (d) Sporophyte → Gametophyte

15. Correct sequence of development of embryo sac is
    (a) Archesporium → Megaspore → Megaspore mother cell → Embryo sac
    (b) Archesporium → Megaspore mother cell → Megaspore → Embryo sac
    (c) Archesporium → Embryo sac → Megaspore
    (d) Megaspore → Archesporium → Embryo sac

16. Archesporium in an ovule is
    (a) Single celled and terminal in origin
    (b) Single celled below nucellar epidermis
    (c) Situated below antipodal cells
    (d) Situated at micropylar end in the centre of ovule

17. Division of cytoplasm after meiotic divisions in pollen mother cells is known as
    (a) Cytokinesis
    (b) Karyokinesis
    (c) Cytoplasmic streaming
    (d) Cytogeny

18. The functional megaspore undergoes
    (a) 3 mitotic divisions to form mature embryo sac
    (b) 2 mitotic divisions to form mature embryo sac
    (c) 3 meiotic divisions to form mature embryo sac
    (d) 2 meiotic divisions to form mature embryo sac

19. Collar-like outgrowth arising from the base of ovule and forming a sort of third integument is known as
    (a) Elaiosome
    (b) Caruncle
    (c) Aril
    (d) Operculum

20. The fusion product in plants (polar nuclei) and male gamete is called
    (a) Primary endosperm nucleus
    (b) Zygote
    (c) Embryo
    (d) Egg

21. Occurrence of more than one embryo in a seed is called
    (a) Polyembryony
    (b) Polysporony
    (c) Polyspermy
    (d) Polyspory

22. Some sporophytic nuclei lie outside the embryo sac; they form
    (a) Endosperm
    (b) Perisperm
    (c) Tegmen
    (d) Chorion

23. Cleistogamy is found in which of the following plants?
    (a) Curcuma
    (b) Brassica
    (c) Commelina
    (d) Balsamina

24. Sexual reproduction in plants was described by
    (a) Camerarius
    (b) Nawaschin
    (c) Strasburger
    (d) Hofmeister

25. Study of formation, growth, and development of new individual generally from egg is known as
    (a) Embryology
    (b) Histology
    (c) Cytology
    (d) Morphology

26. The process of double fertilization (triple fusion) was discovered by
    (a) Strasburger
    (b) J. C. Bose
    (c) Nawaschin
    (d) Hofmeister

27. Double fertilization means
    (a) Fusion of one male gamete with egg
    (b) Fusion of pollen nucleus with egg
    (c) One male gamete with the egg and other with synergids
    (d) Fusion of two eggs