Which of the following is NOT a characteristic of gymnosperms?
Naked seeds
Vascular tissue
Flowers
Perennial plants
Related Questions
One of the tallest gymnosperm is?
Eucalyptus
Pinus
Ginkgo
Sequioa
‘Chilgoza’ a gymnospermic seed that is eaten as dry fruit is produced by
Pinus roxburghii
Pinus geradiana
Ginkgo biloba
Cedrus deodara
Ovules are borne on
Microsporophyll
Megasporophyll
Macrosporophyll
Both (a) and (c )
Sterile part of Cycas microsporophyll is
Apophysis
Sporophore
Middle part
Lower part
In gymnosperms one of the megaspores develops into multicellular structure called multicellular …… that bears two or more archegonia
Male gametophyte
Female gamete
Female gametophyte
Male gamete
Strobili or cones are found in
Study the following and identify two characters found in both Cycas and Pteris.
I. Formation of motile male gametes.
II. Formation of haploid endosperm.
III. Formation of sporophyte directly from gametophyte without gametic union.
IV. Formation of archegonia in female gametophyte.
The correct match is
I and IV
I and III
II and IV
III and IV
In gymnosperms, the nucellus is protected by envelops and this composite structure is known as
Ovule
Ovary
Anther
Strobili
In Cycas stem, open vascular bundle is characterized by
Phloem being sandwitched between xylem
Cambium present in between xylem and phloem
Xylem being sandwithced between phloem
Xylem and phloem occurring on different radii
Which of the following statements is correct regarding the process of meiosis?
It involves two rounds of division and results in four haploid cells.
It involves one round of division and results in two diploid cells.
It involves one round of division and results in four haploid cells.
It involves two rounds of division and results in two diploid cells.
