Biology questions
20584 published questions with worked solutions.
- A pollen tube always enters the embryo sac near the
- The process of fusion of male gamete with the female gamete to form the diploid zygote is known asNot in NEET syllabus
- If pollen enters through the lower end, chalaza of the ovule it is called
- The oospore derived from double fertilization in angiosperms is
- In angiosperms, triple fusion results in the formation of
- When pollen tube enters through micropyle, it is known as
- Double fertilization was discovered by S. G. Nawaschin in
- The primary endosperm nucleus undergoes free nuclear division or karyokinesis in
- Formation of seeds without fertilization is called
- At the time of fruit formation, ovary wall changes into
- _______ is temporary suspension of growth
- During embryo development, the apical cell of the 2-celled pro-embryo undergoes a transverse and two vertical divisions at right...Not in NEET syllabus
- Role of suspensor is
- Which of the following factors control dormancy?
- Which of the following do not produce viable seeds?
- The functional ability of seeds to germinate after considerable dormancy period is called
- Outer integument and inner integument of an ovule changes into
- The oospore during embryonic development dividesNot in NEET syllabus
- In cellular endosperm
- Ex-albuminous seeds differ from albuminous seeds in