Q. Conifers differ from grasses in the :
A) production of seeds from ovules
B) lack of xylem tracheids
C) absence of pollen tubes
D) formation of endosperm before fertilization
Explanation
[Solution from source] In gymnosperms such as conifers the endosperm is the female gametophyte, formed before fertilisation and haploid. In grasses (angiosperms) the endosperm forms after double fertilisation and is triploid. Both groups make seeds from ovules and both have pollen tubes. Answer (4).
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.