In gymnosperms, the male and female cones lie on…….
a) different plants
b) same plants
c) both a and b
d) either a and b
Explanation: monoecious plants
The gymnosperm plants are……..
a) homosporous
b) heterosporous
c) asporous
d) both a and b
Explanation: microspore ( pollen grain) and megaspore (embryo sac)
In gymnosperms, fertilization is single and development of embryo is partial because only……of oospore is concerned with the development of embryo.
a) ½
b) 1/3rd
c) 1/4th
d) 1/6th
In which of the following is polyembryony is of common occurrence but finally a single embryo matures?
a) angiospermae
b) gymnospermae
c) bryophytes
d) ferns
Explanation: a condition in which two or more embryos develop from a single fertilized egg, forming what in humans is known as identical twins.
The number of cotyledons in the seeds of gymnosperms is…….
a) one
b) two
c) three
d) one to many
How many living main groups of gymnosperms are found?
a) two
b) three
c) four
d) five
Explanation: 1. Cycades and 2. Conifers or cone bearing trees
